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Study of Multiple Candidate Agents for the Treatment of COVID-19 in Hospitalized Patients

Industry Alliance Platform Trial to Assess the Efficacy and Safety of Multiple Candidate Agents for the Treatment of COVID-19 in Hospitalized Patients

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04590586
Acronym
COMMUNITY
Enrollment
515
Registered
2020-10-19
Start date
2020-11-24
Completion date
2021-08-03
Last updated
2022-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

COVID-19

Keywords

SARS-CoV-2, Severe acute respiratory syndrome coronavirus 2

Brief summary

The primary objective of this study is to evaluate the time to confirmed clinical recovery in participants hospitalized with COVID-19. Candidate agents will be evaluated frequently for efficacy and safety, with candidate agents being added to and/or removed from the study on an ongoing basis, depending on the results of their evaluation.

Detailed description

This adaptive, randomized, placebo-controlled platform study is designed to rapidly assess multiple candidate agents as treatments for COVID-19 in hospitalized patients. Candidate agents will be evaluated frequently (through ongoing monitoring) for futility and safety, with candidate agents being added to and/or removed from the study on an ongoing basis, depending on the results of their evaluation. For inclusion, participants will need to be hospitalized with a clinical status of Grade 2 to Grade 5, as defined by the following Clinical Severity Status 8-Point Ordinal Scale: 1. Death 2. Hospitalized, on invasive mechanical ventilation or extracorporeal membrane oxygenation (ECMO) 3. Hospitalized, on noninvasive ventilation or high-flow oxygen devices 4. Hospitalized, requiring supplemental oxygen 5. Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care (COVID-19 related or otherwise) 6. Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care 7. Not hospitalized, limitation on activities and/or requiring home oxygen 8. Not hospitalized, no limitations on activities Participants will be randomized equally to either the candidate agent plus standard of care (SoC) or placebo plus SoC in a double-blind fashion. Participants who are randomized to placebo plus SoC will subsequently be randomized equally to a matching placebo corresponding to an available agent whose sub-protocol the patient qualified for (ie, a 2-stage randomization). Each participant in the placebo plus SoC group will only receive one type of placebo. Randomization will be stratified by baseline clinical severity of 2 on the 8-point ordinal scale (yes/no) and remdesivir use at baseline (yes/no). The study will evaluate each candidate agent separately as an add-on to the SoC to assess safety and efficacy. The comparator group for a candidate agent will include participants randomized to the placebo arm of any sub-protocol according to the following conditions: * Apremilast sub-protocol: participants who were enrolled concurrently to apremilast and who would have been eligible for the apremilast sub-protocol. * Lanadelumab sub-protocol: at a site where at least one participant was randomized to either lanadelumab active or placebo arms. * Zilucoplan sub-protocol: at a site where at least one participant was randomized to either the zilucoplan active or placebo arms.

Interventions

DRUGStandard of care

Standard of care (SoC) treatment for COVID-19 infection in line with institutional practice. The SoC may change as new information becomes available about treating COVID-19.

DRUGApremilast

Apremilast administered orally as a tablet.

DRUGApremilast placebo

Matching apremilast placebo administered orally as a tablet.

Lanadelumab administered as an intravenous (IV) infusion.

DRUGLanadelumab placebo

Matching lanadelumab placebo (normal saline) administered as an intravenous (IV) infusion.

Zilucoplan administered as a subcutaneous (sc) injection in the abdomen, thigh, or upper arm.

DRUGZilucoplan placebo

Matching zilucoplan placebo administered as a subcutaneous (sc) injection in the abdomen, thigh, or upper arm.

Sponsors

Amgen
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Adults (≥18 years of age) with active severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection confirmed by laboratory tests and/or point of care tests (eg, commercial or public health assay, which is approved for emergency use). If no diagnostic test results are available that have been obtained during the previous 72 hours, then a test should be performed as part of the screening assessment. * A score of Grade 2 (hospitalized, on invasive mechanical ventilation or ECMO), Grade 3 (hospitalized, on noninvasive ventilation or high-flow oxygen devices), Grade 4 (hospitalized, requiring supplemental oxygen), or Grade 5 (hospitalized, not requiring supplemental oxygen, requiring ongoing medical care \[COVID-19 related or otherwise\]), as defined by an 8 point ordinal scale. * Male participants: * A male participant must agree to use contraception during the treatment period and for at least 6 weeks after the last dose of study treatment and refrain from donating sperm during this period. * Female participants: * A female participant is eligible to participate if she is not pregnant, not breastfeeding, and at least 1 of the following conditions applies: * Not a woman of childbearing potential (WOCBP). OR * A WOCBP who agrees to follow the contraceptive guidance during the treatment period and for at least 6 weeks after the last dose of study treatment. * Ability to provide informed consent signed by the study participant or legally authorized representative. * Ability and willingness to participate in telephone/telemedicine follow-up visits if needed. * Zilucoplan only: Antibiotic prophylaxis: all participants must be willing to take antibiotic prophylaxis concomitantly, starting with the first dose of zilucoplan or placebo.

Exclusion criteria

* Participant has any condition for which, in the opinion of the Investigator, participation would not be in the best interest of the participant (eg, compromise their well-being) or that could prevent, limit, or confound the protocol-specified assessments (eg, participants unable to swallow study medication tablets). * Stage 4 severe chronic kidney disease or requiring dialysis. * Screening 12-lead electrocardiogram (ECG) with a measurable QTc interval according to Fridericia correction (QTcF) ≥ 500 ms. * Anticipated transfer to another hospital that is not a study center within 72 hours. * Participants who are currently pregnant or who are not willing to discontinue breastfeeding. * Participants participating in another clinical study of an investigational medicinal product or other unapproved (or investigational) treatment for COVID-19. * Active tuberculosis or a history of incompletely treated tuberculosis. * Active, uncontrolled systemic bacterial or fungal infection(s). * Apremilast only: Current treatment with apremilast, or another agent of similar mechanism of action, for any indication within 1 week prior to first dose of investigational product. * Apremilast only: Concurrent use at screening or randomization of cytochrome P450 (CYP)3A inducers (eg, rifampin, phenobarbital, carbamazepine) within 1 week prior to first dose of investigational product. * Apremilast only: Known hypersensitivity to apremilast or any excipients in formulation. * Lanadelumab only: Known or suspected hypersensitivity to lanadelumab or any of its excipients. * Lanadelumab only: Previous (within 3 months prior to baseline) or current use of immunomodulators (eg, methotrexate, azathioprine, 6-mercaptopurine, tumor necrosis factor \[TNF\] α inhibitor, Janus kinase \[JAK\] inhibitor, alpha-integrin inhibitor). * Lanadelumab only: Known or suspected venous thromboembolism. * Lanadelumab only: Previous (within 3 months \[or 5 half-lives, whichever is greater\] of screening) or current use of plasma kallikrein (pKal) inhibitor or bradykinin receptor blocker. * Zilucoplan only: Participants with unresolved or suspected infection with Neisseria meningitidis or a past history of N. meningitidis (eg, in a complement-deficient patient).

Design outcomes

Primary

MeasureTime frameDescription
Lanadelumab Sub-protocol: Time to Confirmed Clinical Recovery Without Rehospitalization Through Day 29Day 1 (the day of the first dose of study drug for randomized participants who received at least one dose of study drug or the day of randomization for randomized participants who did not receive any study drug) to Day 29Confirmed clinical recovery means the participant is fit for discharge from hospital, defined by achieving a score of 6 (hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care), 7 (not hospitalized, limitation on activities and/or requiring home oxygen), or 8 (not hospitalized, no limitations on activities) on the clinical severity status 8-point ordinal scale, without being re-hospitalized prior to Day 29. The Kaplan-Meier estimate of the time to confirmed clinical recovery through Day 29, without re-hospitalization through Day 29, was calculated from Study Day 1 to the earliest date on which the participant had a score of 6, 7, or 8 up to Day 29. Participants who never reached a score of 6, 7, or 8 on the clinical severity status 8-point ordinal scale before or on Day 29 were censored at Day 29. Participants who discontinued from the study before or on Day 29 were censored at time of discontinuation from study.
Apremilast Sub-protocol: Time to Confirmed Clinical Recovery Without Rehospitalization Through Day 29Day 1 (the day of the first dose of study drug for randomized participants who received at least one dose of study drug or the day of randomization for randomized participants who did not receive any study drug) to Day 29Confirmed clinical recovery means the participant is fit for discharge from hospital, defined by achieving a score of 6 (hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care), 7 (not hospitalized, limitation on activities and/or requiring home oxygen), or 8 (not hospitalized, no limitations on activities) on the clinical severity status 8-point ordinal scale, without being re-hospitalized prior to Day 29. The Kaplan-Meier estimate of the time to confirmed clinical recovery through Day 29, without re-hospitalization through Day 29, was calculated from Study Day 1 to the earliest date on which the participant had a score of 6, 7, or 8 up to Day 29. Participants who never reached a score of 6, 7, or 8 on the clinical severity status 8-point ordinal scale before or on Day 29 were censored at Day 29. Participants who discontinued from the study before or on Day 29 were censored at time of discontinuation from study.
Zilucoplan Sub-protocol: Time to Confirmed Clinical Recovery Without Rehospitalization Through Day 29Day 1 (the day of the first dose of study drug for randomized participants who received at least one dose of study drug or the day of randomization for randomized participants who did not receive any study drug) to Day 29Confirmed clinical recovery means the participant is fit for discharge from hospital, defined by achieving a score of 6 (hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care), 7 (not hospitalized, limitation on activities and/or requiring home oxygen), or 8 (not hospitalized, no limitations on activities) on the clinical severity status 8-point ordinal scale, without being re-hospitalized prior to Day 29. The Kaplan-Meier estimate of the time to confirmed clinical recovery through Day 29, without re-hospitalization through Day 29, was calculated from Study Day 1 to the earliest date on which the participant had a score of 6, 7, or 8 up to Day 29. Participants who never reached a score of 6, 7, or 8 on the clinical severity status 8-point ordinal scale before or on Day 29 were censored at Day 29. Participants who discontinued from the study before or on Day 29 were censored at time of discontinuation from study.

Secondary

MeasureTime frameDescription
Lanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 8, Day 15, and Day 29The clinical severity status 8-point ordinal scale scores are: 1. Death 2. Hospitalized, on invasive mechanical ventilation or extracorporeal membrane oxygenation (ECMO) 3. Hospitalized, on noninvasive ventilation or high flow oxygen devices 4. Hospitalized, requiring supplemental oxygen 5. Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care (COVID-19 related or otherwise) 6. Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care 7. Not hospitalized, limitation on activities and/or requiring home oxygen 8. Not hospitalized, no limitations on activities Participants with a score of 7 who were discharged to hospice care are counted with participants with a score of 1 (death) for this endpoint.
Lanadelumab Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-point Ordinal Scale From Baseline to Day 29Day 2 to Day 29The worst post-baseline score (lower scores are worse) through Day 29 in the clinical severity status 8-point ordinal scale, derived from all scores recorded after baseline up to and including Day 29. Participants with a score of 7 discharged to hospice care are considered as having a score of 1 (death) instead of a score of 7 for this endpoint. The clinical severity status 8-point ordinal scale scores are: 1. Death 2. Hospitalized, on invasive mechanical ventilation or ECMO 3. Hospitalized, on noninvasive ventilation or high flow oxygen devices 4. Hospitalized, requiring supplemental oxygen 5. Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care (COVID-19 related or otherwise) 6. Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care 7. Not hospitalized, limitation on activities and/or requiring home oxygen 8. Not hospitalized, no limitations on activities
Lanadelumab Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 29Day 1 to Day 29Number of ICU days is the sum of the duration of any episode of ICU admission between Day 1 and Day 29, both inclusive. The number of ICU days of participants who died before or on Day 29 as well as of participants with a score of 7 on the clinical severity status 8-point ordinal scale who were discharged to hospice care by Day 29 was set to 30 (worst possible outcome).
Lanadelumab Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 29Day 1 to Day 29Number of invasive mechanical ventilator days is the sum of the duration of any episode of invasive mechanical ventilator admission between Day 1 and Day 29, both inclusive. The number of invasive mechanical ventilator days of participants who died before or on Day 29 as well as of participants with a score of 7 on the clinical severity status 8-point ordinal scale who were discharged to hospice care by Day 29 was set to 30.
Lanadelumab Sub-protocol: Percentage of Participants Who Achieved Clinical Recovery by Days 8, 15, and 29Day 8, Day 15, and Day 29Clinical recovery is defined as being fit for discharge, i.e., the achievement of a score of 6, 7, or 8 on the clinical severity status 8-point ordinal scale. Participants with a score of 7 discharged to hospice care were not considered fit for discharge. Participants who discontinued the study on or before Days 8, 15, or 29 or with a missing clinical recovery status were considered as not having clinical recovery at each respective time point. Clinical severity status 8-point ordinal scale: 1. Death 2. Hospitalized, on invasive mechanical ventilation or ECMO 3. Hospitalized, on noninvasive ventilation or high-flow oxygen devices 4. Hospitalized, requiring supplemental oxygen 5. Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care 6. Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care 7. Not hospitalized, limitation on activities and/or requiring home oxygen 8. Not hospitalized, no limitations on activities
Lanadelumab Sub-protocol: Percentage of Participants Who Achieved Sustained Clinical RecoveryDay 60Sustained clinical recovery is defined as being fit for discharge (achieving a score of 6, 7, or 8 on the clinical severity status 8-point ordinal scale) by Day 29, without re-hospitalization by Day 60. Participants with a score of 7 discharged to hospice care were not considered fit for discharge. Participants who died or discontinued from study or with a missing clinical recovery status at Day 60 were not considered having sustained clinical recovery. Clinical severity status 8-point ordinal scale: 1. Death 2. Hospitalized, on invasive mechanical ventilation or ECMO 3. Hospitalized, on noninvasive ventilation or high flow oxygen devices 4. Hospitalized, requiring supplemental oxygen 5. Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care 6. Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care 7. Not hospitalized, limitation on activities and/or requiring home oxygen 8. Not hospitalized, no limitations on activities
Lanadelumab Sub-protocol: Number of Participants With Treatment-emergent Adverse Events (TEAEs)From first dose of study drug to end of study (Day 60)An adverse event (AE) is any untoward medical occurrence in a participant, temporally associated with the use of study treatment, whether or not considered related to study treatment. A TEAE is an AE that occurs after the first dose of study drug. A Serious AE is any AE that resulted in death, was life-threatening, required inpatient hospitalization or prolongation of hospitalization, resulted in persistent disability/incapacity, a congenital anomaly/birth defect, or an important medical event that may jeopardize the patient or require intervention to prevent an outcome listed above. The Investigator assessed the intensity of each AE according to the Common Terminology Criteria for Adverse Events (CTCAE): * Grade 1 Mild; asymptomatic or mild symptoms; * Grade 2 Moderate; minimal, local or noninvasive intervention indicated; * Grade 3 Severe or medically significant, not immediately life-threatening; * Grade 4 Life-threatening; urgent intervention indicated; * Grade 5 Death due to AE.
Apremilast Sub-protocol: Percentage of Participants Who Achieved Oxygen-Free Recovery at Day 29Day 29Oxygen-free recovery at Day 29 is defined as being alive, discharged, and not receiving supplemental oxygen at Day 29. Participants who reached a score of 7 on the ordinal scale for clinical severity who were discharged to hospice care before or on Day 29 were considered as not discharged at Day 29. Participants with a missing oxygen-free recovery status at Day 29 were considered as not having an oxygen-free recovery.
Apremilast Sub-protocol: Percentage of Participants With a ≥ 2-point Improvement From Baseline or Fit for Discharge on the Clinical Severity Status 8-Point Ordinal Scale at Day 29Baseline (Day 1) and Day 29Fit for discharge is defined as achieving a score of 6, 7, or 8 on the clinical severity status 8-point ordinal scale. Participants with an ordinal scale score of 7 must not have been discharged to hospice care to be considered as fit for discharge. Participants with a missing clinical severity score at Day 29 were considered as not having met the event at Day 29. The clinical severity status 8-point ordinal scale scores are: 1. Death 2. Hospitalized, on invasive mechanical ventilation or ECMO 3. Hospitalized, on noninvasive ventilation or high-flow oxygen devices 4. Hospitalized, requiring supplemental oxygen 5. Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care (COVID-19 related or otherwise) 6. Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care 7. Not hospitalized, limitation on activities and/or requiring home oxygen 8. Not hospitalized, no limitations on activities
Apremilast Sub-protocol: Percentage of Participants Who Died Before or on Day 29Day 1 to Day 29All-cause mortality is death due to any cause. Participants with an unknown alive/death status on Day 29 were considered alive for this analysis, with the exception of patients with a score of 7 who were discharged to hospice care before or on Day 29.
Apremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 8, Day 15, and Day 29The clinical severity status 8-point ordinal scale scores are: 1. Death 2. Hospitalized, on invasive mechanical ventilation or extracorporeal membrane oxygenation (ECMO) 3. Hospitalized, on noninvasive ventilation or high flow oxygen devices 4. Hospitalized, requiring supplemental oxygen 5. Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care (COVID-19 related or otherwise) 6. Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care 7. Not hospitalized, limitation on activities and/or requiring home oxygen 8. Not hospitalized, no limitations on activities Participants with a score of 7 who were discharged to hospice care are counted with participants with a score of 1 (death) for this endpoint.
Apremilast Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 29Day 2 to Day 29The worst post-baseline score (lower scores are worse) through Day 29 in the clinical severity status 8-point ordinal scale, derived from all scores recorded after baseline up to and including Day 29. Participants with a score of 7 discharged to hospice care are considered as having a score of 1 (death) instead of a score of 7 for this endpoint. The clinical severity status 8-point ordinal scale scores are: 1. Death 2. Hospitalized, on invasive mechanical ventilation or extracorporeal membrane oxygenation (ECMO) 3. Hospitalized, on noninvasive ventilation or high flow oxygen devices 4. Hospitalized, requiring supplemental oxygen 5. Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care (COVID-19 related or otherwise) 6. Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care 7. Not hospitalized, limitation on activities and/or requiring home oxygen 8. Not hospitalized, no limitations on activities
Apremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 29Day 1 to Day 29Number of ICU days is the sum of the duration of any episode of ICU admission between Day 1 and Day 29, both inclusive. The number of ICU days of participants who died before or on Day 29 as well as of participants with a score of 7 on the clinical severity status 8-point ordinal scale who were discharged to hospice care by Day 29 was set to 30 (worst possible outcome).
Lanadelumab Sub-protocol: Percentage of Participants Who Achieved Oxygen-Free Recovery at Day 29Day 29Oxygen-free recovery at Day 29 is defined as being alive, discharged, and not receiving supplemental oxygen at Day 29. Participants who reached a score of 7 on the ordinal scale for clinical severity who were discharged to hospice care before or on Day 29 were considered as not discharged at Day 29. Participants with a missing oxygen-free recovery status at Day 29 were considered as not having an oxygen-free recovery.
Apremilast Sub-protocol: Percentage of Participants Who Achieved Clinical Recovery at Days 8, 15, and 29Day 8, Day 15, and Day 29Clinical recovery is defined as being fit for discharge, i.e., the achievement of a score of 6, 7, or 8 on the clinical severity status 8-point ordinal scale. Participants with a score of 7 discharged to hospice care were not considered fit for discharge. Participants who discontinued the study on or before Days 8, 15, or 29 or with a missing clinical recovery status were considered as not having clinical recovery at each respective time point. Clinical severity status 8-point ordinal scale: 1. Death 2. Hospitalized, on invasive mechanical ventilation or ECMO 3. Hospitalized, on noninvasive ventilation or high-flow oxygen devices 4. Hospitalized, requiring supplemental oxygen 5. Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care 6. Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care 7. Not hospitalized, limitation on activities and/or requiring home oxygen 8. Not hospitalized, no limitations on activities
Apremilast Sub-protocol: Percentage of Participants Who Achieved Sustained Clinical RecoveryDay 60Sustained clinical recovery is defined as being fit for discharge (achieving a score of 6, 7, or 8 on the clinical severity status 8-point ordinal scale) by Day 29, without re-hospitalization by Day 60. Participants with a score of 7 discharged to hospice care were not considered fit for discharge. Participants who died or discontinued from study or with a missing clinical recovery status at Day 60 were not considered having sustained clinical recovery. Clinical severity status 8-point ordinal scale: 1. Death 2. Hospitalized, on invasive mechanical ventilation or ECMO 3. Hospitalized, on noninvasive ventilation or high flow oxygen devices 4. Hospitalized, requiring supplemental oxygen 5. Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care 6. Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care 7. Not hospitalized, limitation on activities and/or requiring home oxygen 8. Not hospitalized, no limitations on activities
Apremilast Sub-protocol: Number of Participants With Treatment-emergent Adverse Events (TEAEs)From first dose of study drug to end of study (Day 60)An adverse event (AE) is any untoward medical occurrence in a participant, temporally associated with the use of study treatment, whether or not considered related to study treatment. A TEAE is an AE that occurs after the first dose of study drug. A serious AE is any AE that resulted in death, was life-threatening, required inpatient hospitalization or prolongation of hospitalization, resulted in persistent disability/incapacity, a congenital anomaly/birth defect, or an important medical event that may jeopardize the patient or require intervention to prevent an outcome listed above. The Investigator assessed the intensity of each AE according to the CTCAE grades: * Grade 1 Mild; asymptomatic or mild symptoms; * Grade 2 Moderate; minimal, local or noninvasive intervention indicated; * Grade 3 Severe or medically significant, not immediately life-threatening; * Grade 4 Life-threatening; urgent intervention indicated; * Grade 5 Death due to AE.
Zilucoplan Sub-protocol: Percentage of Participants Who Achieved Oxygen-Free Recovery at Day 29Day 29Oxygen-free recovery at Day 29 is defined as being alive, discharged, and not receiving supplemental oxygen at Day 29. Participants who reached a score of 7 on the ordinal scale for clinical severity who were discharged to hospice care before or on Day 29 were considered as not discharged at Day 29. Participants with a missing oxygen-free recovery status at Day 29 were considered as not having an oxygen-free recovery.
Zilucoplan Sub-protocol: Percentage of Participants With a ≥ 2-point Improvement From Baseline or Fit for Discharge on the Clinical Severity Status 8-Point Ordinal Scale at Day 29Baseline (Day 1) and Day 29Fit for discharge is defined as achieving a score of 6, 7, or 8 on the clinical severity status 8-point ordinal scale. Participants with an ordinal scale score of 7 must not have been discharged to hospice care to be considered as fit for discharge. Participants with a missing clinical severity score at Day 29 were considered as not having met the event at Day 29. The clinical severity status 8-point ordinal scale scores are: 1. Death 2. Hospitalized, on invasive mechanical ventilation or ECMO 3. Hospitalized, on noninvasive ventilation or high-flow oxygen devices 4. Hospitalized, requiring supplemental oxygen 5. Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care (COVID-19 related or otherwise) 6. Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care 7. Not hospitalized, limitation on activities and/or requiring home oxygen 8. Not hospitalized, no limitations on activities
Zilucoplan Sub-protocol: Percentage of Participants Who Died Before or on Day 29Day 1 to Day 29All-cause mortality is death due to any cause. Participants with an unknown alive/death status on Day 29 were considered alive for this analysis, with the exception of patients with a score of 7 who were discharged to hospice care before or on Day 29.
Zilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 8, Day 15, and Day 29The clinical severity status 8-point ordinal scale scores are: 1. Death 2. Hospitalized, on invasive mechanical ventilation or ECMO 3. Hospitalized, on noninvasive ventilation or high flow oxygen devices 4. Hospitalized, requiring supplemental oxygen 5. Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care (COVID-19 related or otherwise) 6. Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care 7. Not hospitalized, limitation on activities and/or requiring home oxygen 8. Not hospitalized, no limitations on activities Participants with a score of 7 who were discharged to hospice care are counted with participants with a score of 1 (death) for this endpoint.
Zilucoplan Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 29Day 2 to Day 29The worst post-baseline score (lower scores are worse) through Day 29 in the clinical severity status 8-point ordinal scale scores, derived from all scores recorded after baseline up to and including Day 29. Participants with a score of 7 discharged to hospice care were considered as having a score of 1 (death) instead of a score of 7 for this endpoint. The clinical severity status 8-point ordinal scale scores scores are: 1. Death 2. Hospitalized, on invasive mechanical ventilation or ECMO 3. Hospitalized, on noninvasive ventilation or high flow oxygen devices 4. Hospitalized, requiring supplemental oxygen 5. Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care (COVID-19 related or otherwise) 6. Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care 7. Not hospitalized, limitation on activities and/or requiring home oxygen 8. Not hospitalized, no limitations on activities
Zilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 29Day 1 to Day 29Number of ICU days is the sum of the duration of any episode of ICU admission between Day 1 and Day 29, both inclusive. The number of ICU days of participants who died before or on Day 29 as well as of participants with a score of 7 on the clinical severity status 8-point ordinal scale who were discharged to hospice care by Day 29 was set to 30 (worst possible outcome).
Zilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 29Day 1 to Day 29Number of invasive mechanical ventilator days is the sum of the duration of any episode of invasive mechanical ventilator admission between Day 1 and Day 29, both inclusive. The number of invasive mechanical ventilator days of participants who died before or on Day 29 as well as of participants with a score of 7 on the clinical severity status 8-point ordinal scale who were discharged to hospice care by Day 29 was set to 30.
Zilucoplan Sub-protocol: Percentage of Participants Who Achieved Clinical Recovery by Days 8, 15, and 29Day 8, Day 15, and Day 29Clinical recovery is defined as being fit for discharge, i.e., the achievement of a score of 6, 7, or 8 on the clinical severity status 8-point ordinal scale. Participants with a score of 7 discharged to hospice care were not considered fit for discharge. Participants who discontinued the study on or before Days 8, 15, or 29 or with a missing clinical recovery status were considered as not having clinical recovery at each respective time point. Clinical severity status 8-point ordinal scale: 1. Death 2. Hospitalized, on invasive mechanical ventilation or ECMO 3. Hospitalized, on noninvasive ventilation or high-flow oxygen devices 4. Hospitalized, requiring supplemental oxygen 5. Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care 6. Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care 7. Not hospitalized, limitation on activities and/or requiring home oxygen 8. Not hospitalized, no limitations on activities
Zilucoplan Sub-protocol: Percentage of Participants Who Achieved Sustained Clinical RecoveryDay 60Sustained clinical recovery is defined as being fit for discharge (achieving a score of 6, 7, or 8 on the clinical severity status 8-point ordinal scale) by Day 29, without re-hospitalization by Day 60. Participants with a score of 7 discharged to hospice care were not considered fit for discharge. Participants who died or discontinued from study or with a missing clinical recovery status at Day 60 were not considered having sustained clinical recovery. Clinical severity status 8-point ordinal scale: 1. Death 2. Hospitalized, on invasive mechanical ventilation or ECMO 3. Hospitalized, on noninvasive ventilation or high flow oxygen devices 4. Hospitalized, requiring supplemental oxygen 5. Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care 6. Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care 7. Not hospitalized, limitation on activities and/or requiring home oxygen 8. Not hospitalized, no limitations on activities
Zilucoplan Sub-protocol: Number of Participants With Treatment-emergent Adverse EventsFrom first dose of study drug to end of study (Day 60)An adverse event is any untoward medical occurrence in a participant, temporally associated with the use of study treatment, whether or not considered related to study treatment. A TEAE is an AE that occurs after the first dose of study drug. A serious AE is any AE that resulted in death, was life-threatening, required inpatient hospitalization or prolongation of hospitalization, resulted in persistent disability/incapacity, a congenital anomaly/birth defect, or an important medical event that may jeopardize the patient or require intervention to prevent an outcome listed above. The Investigator assessed the intensity of each AE according to the CTCAE grades: * Grade 1 Mild; asymptomatic or mild symptoms; * Grade 2 Moderate; minimal, local or noninvasive intervention indicated; * Grade 3 Severe or medically significant, not immediately life-threatening; * Grade 4 Life-threatening; urgent intervention indicated; * Grade 5 Death due to AE.
Apremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 29Day 1 to Day 29Number of invasive mechanical ventilator days is the sum of the duration of any episode of invasive mechanical ventilator admission between Day 1 and Day 29, both inclusive. The number of invasive mechanical ventilator days of participants who died before or on Day 29 as well as of participants with a score of 7 on the clinical severity status 8-point ordinal scale who were discharged to hospice care by Day 29 was set to 30.
Lanadelumab Sub-protocol: Percentage of Participants With a ≥ 2-point Improvement From Baseline or Fit for Discharge on the Clinical Severity Status 8-Point Ordinal Scale at Day 29Baseline (Day 1) and Day 29Fit for discharge is defined as achieving a score of 6, 7, or 8 on the clinical severity status 8-point ordinal scale. Participants with an ordinal scale score of 7 must not have been discharged to hospice care to be considered as fit for discharge. Participants with a missing clinical severity score at Day 29 were considered as not having met the event at Day 29. The clinical severity status 8-point ordinal scale scores are: 1. Death 2. Hospitalized, on invasive mechanical ventilation or extracorporeal membrane oxygenation (ECMO) 3. Hospitalized, on noninvasive ventilation or high-flow oxygen devices 4. Hospitalized, requiring supplemental oxygen 5. Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care (COVID-19 related or otherwise) 6. Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care 7. Not hospitalized, limitation on activities and/or requiring home oxygen 8. Not hospitalized, no limitations on activities
Lanadelumab Sub-protocol: Percentage of Participants Who Died Before or on Day 29Day 1 to Day 29All-cause mortality is death due to any cause. Participants with an unknown alive/death status on Day 29 were considered alive for this analysis, with the exception of patients with a score of 7 who were discharged to hospice care before or on Day 29.

Countries

Argentina, Brazil, Chile, Mexico, Russia, South Africa, Ukraine, United States

Participant flow

Recruitment details

This adaptive platform study consisted of 3 sub-protocols, each designed to assess a candidate agent as treatment for coronavirus disease 2019 (COVID-19) in hospitalized adult patients who had severe infection with acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus that causes COVID-19. The control group for a candidate agent includes participants randomized to any matching placebo for a candidate agent if certain criteria were met (shared placebo).

Pre-assignment details

Participants were initially randomized to an active candidate agent or generically to placebo plus standard of care (SoC) for sub-protocols for which they met eligibility. Participants randomized to placebo plus SoC were subsequently randomized equally to a matching placebo for an available candidate agent whose sub-protocol the participant qualified for. Randomization was stratified by baseline clinical severity of 2 on the 8-point ordinal scale (yes/no) and remdesivir use at baseline (yes/no).

Participants by arm

ArmCount
Lanadelumab + Standard of Care
Participants randomized to receive lanadelumab 300 mg by intravenous infusion on Day 1, and a second dose administered on Day 4, in addition to standard of care.
28
Lanadelumab Placebo Control
Includes participants randomized to receive matching placebo to lanadelumab plus standard of care treatment as well as participants who were randomized to receive placebo to apremilast or placebo to zilucoplan plus standard of care treatment at a site that enrolled at least one participant in the lanadelumab sub-protocol.
34
Apremilast + Standard of Care
Participants randomized to receive 30 mg apremilast orally twice a day (BID) in addition to standard of care treatment for 14 days or until hospital discharge, whichever occurred first.
194
Apremilast Placebo Control
Includes participants randomized to receive matching placebo to apremilast plus standard of care treatment as well as participants who were randomized to receive placebo to lanadelumab or placebo to zilucoplan plus standard of care treatment at a site concurrently enrolling apremilast sub-protocol participants and who would have been eligible for the apremilast sub-protocol.
190
Zilucoplan + Standard of Care
Participants randomized to receive 32.4 mg zilucoplan by subcutaneous injection every day for 14 days, or until discharge if discharge was before 14 days of treatment, in addition to standard of care.
100
Zilucoplan Placebo +Control
Includes participants randomized to receive matching placebo to zilucoplan plus standard of care treatment as well as participants who were randomized to receive placebo to lanadelumab or placebo to apremilast plus standard of care treatment at a site that enrolled at least one participant in the zilucoplan sub-protocol.
75
Total621

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003FG004FG005
Overall StudyDeath713734193
Overall StudyLost to Follow-up30111160
Overall StudyOther301121
Overall StudyWithdrawal by Subject006030

Baseline characteristics

CharacteristicApremilast + Standard of CareApremilast Placebo ControlTotalLanadelumab + Standard of CareLanadelumab Placebo ControlZilucoplan + Standard of CareZilucoplan Placebo +Control
Age, Continuous
Apremilast Sub-protocol
57.2 years
STANDARD_DEVIATION 13.84
55.7 years
STANDARD_DEVIATION 13.37
56.5 years
STANDARD_DEVIATION 13.61
Age, Continuous
Lanadelumab Sub-protocol
56.8 years
STANDARD_DEVIATION 14.57
53.4 years
STANDARD_DEVIATION 15.34
59.6 years
STANDARD_DEVIATION 13.5
Age, Continuous
Zilucoplan Sub-protocol
55.4 years
STANDARD_DEVIATION 14.11
53.2 years
STANDARD_DEVIATION 14.13
58.4 years
STANDARD_DEVIATION 13.62
Age, Customized
Apremilast Sub-protocol
≥ 18 to ≤ 49 years
51 Participants56 Participants107 Participants
Age, Customized
Apremilast Sub-protocol
≥ 50 to ≤ 64 years
76 Participants81 Participants157 Participants
Age, Customized
Apremilast Sub-protocol
≥ 65 to ≤ 84 years
64 Participants52 Participants116 Participants
Age, Customized
Apremilast Sub-protocol
≥ 85 years
3 Participants1 Participants4 Participants
Age, Customized
Lanadelumab Sub-protocol
≥ 18 to ≤ 49 years
21 Participants13 Participants8 Participants
Age, Customized
Lanadelumab Sub-protocol
≥ 50 to ≤ 64 years
22 Participants7 Participants15 Participants
Age, Customized
Lanadelumab Sub-protocol
≥ 65 to ≤ 84 years
18 Participants8 Participants10 Participants
Age, Customized
Lanadelumab Sub-protocol
≥ 85 years
1 Participants0 Participants1 Participants
Age, Customized
Zilucoplan Sub-protocol
≥ 18 to ≤ 49 years
64 Participants45 Participants19 Participants
Age, Customized
Zilucoplan Sub-protocol
≥ 50 to ≤ 64 years
65 Participants36 Participants29 Participants
Age, Customized
Zilucoplan Sub-protocol
≥ 65 to ≤ 84 years
42 Participants16 Participants26 Participants
Age, Customized
Zilucoplan Sub-protocol
≥ 85 years
4 Participants3 Participants1 Participants
Clinical Severity Score of 2
Apremilast Sub-protocol
No (Grade 3-5)
183 Participants181 Participants364 Participants
Clinical Severity Score of 2
Apremilast Sub-protocol
Yes (Grade 2)
11 Participants9 Participants20 Participants
Clinical Severity Score of 2
Lanadelumab Sub-protocol
No (Grade 3-5)
55 Participants25 Participants30 Participants
Clinical Severity Score of 2
Lanadelumab Sub-protocol
Yes (Grade 2)
7 Participants3 Participants4 Participants
Clinical Severity Score of 2
Zilucoplan Sub-protocol
No (Grade 3-5)
161 Participants92 Participants69 Participants
Clinical Severity Score of 2
Zilucoplan Sub-protocol
Yes (Grade 2)
14 Participants8 Participants6 Participants
Ethnicity (NIH/OMB)
Apremilast Sub-protocol
Hispanic or Latino
75 Participants72 Participants147 Participants
Ethnicity (NIH/OMB)
Apremilast Sub-protocol
Not Hispanic or Latino
108 Participants112 Participants220 Participants
Ethnicity (NIH/OMB)
Apremilast Sub-protocol
Unknown or Not Reported
11 Participants6 Participants17 Participants
Ethnicity (NIH/OMB)
Lanadelumab Sub-protocol
Hispanic or Latino
37 Participants18 Participants19 Participants
Ethnicity (NIH/OMB)
Lanadelumab Sub-protocol
Not Hispanic or Latino
25 Participants10 Participants15 Participants
Ethnicity (NIH/OMB)
Lanadelumab Sub-protocol
Unknown or Not Reported
0 Participants0 Participants0 Participants
Ethnicity (NIH/OMB)
Zilucoplan Sub-protocol
Hispanic or Latino
97 Participants65 Participants32 Participants
Ethnicity (NIH/OMB)
Zilucoplan Sub-protocol
Not Hispanic or Latino
78 Participants35 Participants43 Participants
Ethnicity (NIH/OMB)
Zilucoplan Sub-protocol
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Apremilast Sub-protocol
American Indian or Alaska Native
0 Participants1 Participants1 Participants
Race (NIH/OMB)
Apremilast Sub-protocol
Asian
11 Participants7 Participants18 Participants
Race (NIH/OMB)
Apremilast Sub-protocol
Black or African American
9 Participants9 Participants18 Participants
Race (NIH/OMB)
Apremilast Sub-protocol
More than one race
4 Participants7 Participants11 Participants
Race (NIH/OMB)
Apremilast Sub-protocol
Native Hawaiian or Other Pacific Islander
0 Participants1 Participants1 Participants
Race (NIH/OMB)
Apremilast Sub-protocol
Unknown or Not Reported
19 Participants14 Participants33 Participants
Race (NIH/OMB)
Apremilast Sub-protocol
White
151 Participants151 Participants302 Participants
Race (NIH/OMB)
Lanadelumab Sub-protocol
American Indian or Alaska Native
5 Participants1 Participants0 Participants3 Participants1 Participants
Race (NIH/OMB)
Lanadelumab Sub-protocol
Asian
8 Participants0 Participants0 Participants3 Participants5 Participants
Race (NIH/OMB)
Lanadelumab Sub-protocol
Black or African American
15 Participants3 Participants2 Participants5 Participants5 Participants
Race (NIH/OMB)
Lanadelumab Sub-protocol
More than one race
13 Participants2 Participants1 Participants8 Participants2 Participants
Race (NIH/OMB)
Lanadelumab Sub-protocol
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Lanadelumab Sub-protocol
Unknown or Not Reported
15 Participants2 Participants3 Participants6 Participants4 Participants
Race (NIH/OMB)
Lanadelumab Sub-protocol
White
181 Participants20 Participants28 Participants75 Participants58 Participants
Race (NIH/OMB)
Zilucoplan Sub-protocol
American Indian or Alaska Native
4 Participants3 Participants1 Participants
Race (NIH/OMB)
Zilucoplan Sub-protocol
Asian
8 Participants3 Participants5 Participants
Race (NIH/OMB)
Zilucoplan Sub-protocol
Black or African American
10 Participants5 Participants5 Participants
Race (NIH/OMB)
Zilucoplan Sub-protocol
More than one race
10 Participants8 Participants2 Participants
Race (NIH/OMB)
Zilucoplan Sub-protocol
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Zilucoplan Sub-protocol
Unknown or Not Reported
10 Participants6 Participants4 Participants
Race (NIH/OMB)
Zilucoplan Sub-protocol
White
133 Participants75 Participants58 Participants
Region
Apremilast Sub-protocol
Eastern Europe
51 Participants53 Participants104 Participants
Region
Apremilast Sub-protocol
Latin America
60 Participants50 Participants110 Participants
Region
Apremilast Sub-protocol
North America
53 Participants60 Participants113 Participants
Region
Apremilast Sub-protocol
Rest of the World
30 Participants27 Participants57 Participants
Region
Lanadelumab Sub-protocol
Eastern Europe
0 Participants0 Participants0 Participants
Region
Lanadelumab Sub-protocol
Latin America
38 Participants18 Participants20 Participants
Region
Lanadelumab Sub-protocol
North America
18 Participants9 Participants9 Participants
Region
Lanadelumab Sub-protocol
Rest of the World
6 Participants1 Participants5 Participants
Region
Zilucoplan Sub-protocol
Eastern Europe
20 Participants6 Participants14 Participants
Region
Zilucoplan Sub-protocol
Latin America
98 Participants65 Participants33 Participants
Region
Zilucoplan Sub-protocol
North America
36 Participants26 Participants10 Participants
Region
Zilucoplan Sub-protocol
Rest of the World
21 Participants3 Participants18 Participants
Remdesivir Use at Baseline
Apremilast Sub-protocol
No
149 Participants146 Participants295 Participants
Remdesivir Use at Baseline
Apremilast Sub-protocol
Yes
45 Participants44 Participants89 Participants
Remdesivir Use at Baseline
Lanadelumab Sub-protocol
No
50 Participants21 Participants29 Participants
Remdesivir Use at Baseline
Lanadelumab Sub-protocol
Yes
12 Participants7 Participants5 Participants
Remdesivir Use at Baseline
Zilucoplan Sub-protocol
No
144 Participants78 Participants66 Participants
Remdesivir Use at Baseline
Zilucoplan Sub-protocol
Yes
31 Participants22 Participants9 Participants
Sex: Female, Male
Apremilast Sub-protocol
Female
84 Participants72 Participants156 Participants0 Participants0 Participants0 Participants0 Participants
Sex: Female, Male
Apremilast Sub-protocol
Male
110 Participants118 Participants228 Participants0 Participants0 Participants0 Participants0 Participants
Sex: Female, Male
Lanadelumab Sub-protocol
Female
0 Participants0 Participants20 Participants11 Participants9 Participants0 Participants0 Participants
Sex: Female, Male
Lanadelumab Sub-protocol
Male
0 Participants0 Participants42 Participants17 Participants25 Participants0 Participants0 Participants
Sex: Female, Male
Zilucoplan Sub-protocol
Female
0 Participants0 Participants62 Participants0 Participants0 Participants34 Participants28 Participants
Sex: Female, Male
Zilucoplan Sub-protocol
Male
0 Participants0 Participants113 Participants0 Participants0 Participants66 Participants47 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
EG005
affected / at risk
deaths
Total, all-cause mortality
8 / 281 / 137 / 19435 / 18420 / 1003 / 8
other
Total, other adverse events
12 / 271 / 163 / 18950 / 18246 / 954 / 7
serious
Total, serious adverse events
11 / 271 / 151 / 18955 / 18231 / 952 / 7

Outcome results

Primary

Apremilast Sub-protocol: Time to Confirmed Clinical Recovery Without Rehospitalization Through Day 29

Confirmed clinical recovery means the participant is fit for discharge from hospital, defined by achieving a score of 6 (hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care), 7 (not hospitalized, limitation on activities and/or requiring home oxygen), or 8 (not hospitalized, no limitations on activities) on the clinical severity status 8-point ordinal scale, without being re-hospitalized prior to Day 29. The Kaplan-Meier estimate of the time to confirmed clinical recovery through Day 29, without re-hospitalization through Day 29, was calculated from Study Day 1 to the earliest date on which the participant had a score of 6, 7, or 8 up to Day 29. Participants who never reached a score of 6, 7, or 8 on the clinical severity status 8-point ordinal scale before or on Day 29 were censored at Day 29. Participants who discontinued from the study before or on Day 29 were censored at time of discontinuation from study.

Time frame: Day 1 (the day of the first dose of study drug for randomized participants who received at least one dose of study drug or the day of randomization for randomized participants who did not receive any study drug) to Day 29

Population: The apremilast full analysis set (FAS) includes all participants who were randomized to the apremilast arm as well as all participants who were randomized to any placebo arm included in the control arm for apremilast.

ArmMeasureValue (MEDIAN)
Lanadelumab + Standard of CareApremilast Sub-protocol: Time to Confirmed Clinical Recovery Without Rehospitalization Through Day 2914.0 days
Lanadelumab Placebo ControlApremilast Sub-protocol: Time to Confirmed Clinical Recovery Without Rehospitalization Through Day 2914.0 days
p-value: 0.877995% CI: [0.77, 1.24]Stratified log-rank test
Primary

Lanadelumab Sub-protocol: Time to Confirmed Clinical Recovery Without Rehospitalization Through Day 29

Confirmed clinical recovery means the participant is fit for discharge from hospital, defined by achieving a score of 6 (hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care), 7 (not hospitalized, limitation on activities and/or requiring home oxygen), or 8 (not hospitalized, no limitations on activities) on the clinical severity status 8-point ordinal scale, without being re-hospitalized prior to Day 29. The Kaplan-Meier estimate of the time to confirmed clinical recovery through Day 29, without re-hospitalization through Day 29, was calculated from Study Day 1 to the earliest date on which the participant had a score of 6, 7, or 8 up to Day 29. Participants who never reached a score of 6, 7, or 8 on the clinical severity status 8-point ordinal scale before or on Day 29 were censored at Day 29. Participants who discontinued from the study before or on Day 29 were censored at time of discontinuation from study.

Time frame: Day 1 (the day of the first dose of study drug for randomized participants who received at least one dose of study drug or the day of randomization for randomized participants who did not receive any study drug) to Day 29

Population: The lanadelumab sub-protocol primary analysis set includes all participants who were randomized to lanadelumab as well as all participants who were randomized to any placebo arm included in the control arm for lanadelumab with a baseline clinical severity status of Grade 3 to Grade 5 on the clinical severity status 8-point ordinal scale.

ArmMeasureValue (MEDIAN)
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Time to Confirmed Clinical Recovery Without Rehospitalization Through Day 2910.0 days
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Time to Confirmed Clinical Recovery Without Rehospitalization Through Day 2915.5 days
p-value: 0.667295% CI: [0.59, 2.35]Stratified log-rank test
Primary

Zilucoplan Sub-protocol: Time to Confirmed Clinical Recovery Without Rehospitalization Through Day 29

Confirmed clinical recovery means the participant is fit for discharge from hospital, defined by achieving a score of 6 (hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care), 7 (not hospitalized, limitation on activities and/or requiring home oxygen), or 8 (not hospitalized, no limitations on activities) on the clinical severity status 8-point ordinal scale, without being re-hospitalized prior to Day 29. The Kaplan-Meier estimate of the time to confirmed clinical recovery through Day 29, without re-hospitalization through Day 29, was calculated from Study Day 1 to the earliest date on which the participant had a score of 6, 7, or 8 up to Day 29. Participants who never reached a score of 6, 7, or 8 on the clinical severity status 8-point ordinal scale before or on Day 29 were censored at Day 29. Participants who discontinued from the study before or on Day 29 were censored at time of discontinuation from study.

Time frame: Day 1 (the day of the first dose of study drug for randomized participants who received at least one dose of study drug or the day of randomization for randomized participants who did not receive any study drug) to Day 29

Population: The zilucoplan full analysis set includes all participants who were randomized to the zilucoplan arm as well as all participants who were randomized to any placebo arm included in the control arm for zilucoplan.

ArmMeasureValue (MEDIAN)
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Time to Confirmed Clinical Recovery Without Rehospitalization Through Day 2914.0 days
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Time to Confirmed Clinical Recovery Without Rehospitalization Through Day 2915.0 days
Secondary

Apremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29

The clinical severity status 8-point ordinal scale scores are: 1. Death 2. Hospitalized, on invasive mechanical ventilation or extracorporeal membrane oxygenation (ECMO) 3. Hospitalized, on noninvasive ventilation or high flow oxygen devices 4. Hospitalized, requiring supplemental oxygen 5. Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care (COVID-19 related or otherwise) 6. Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care 7. Not hospitalized, limitation on activities and/or requiring home oxygen 8. Not hospitalized, no limitations on activities Participants with a score of 7 who were discharged to hospice care are counted with participants with a score of 1 (death) for this endpoint.

Time frame: Day 8, Day 15, and Day 29

Population: Apremilast sub-protocol full analysis set

ArmMeasureGroupCategoryValue (COUNT_OF_PARTICIPANTS)
Lanadelumab + Standard of CareApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 88 (Not hospitalized, no limitations on activities)38 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 156 (Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care)0 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 85 (Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care)31 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 157 (Not hospitalized, limitation on activities and/or requiring home oxygen)46 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 8Missing5 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 158 (Not hospitalized, no limitations on activities)78 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 82 (Hospitalized on invasive mechanical ventilation or ECMO)22 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 15Missing4 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 151 (Death or discharged to hospice care)22 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 291 (Death or discharged to hospice care)34 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 86 (Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care)0 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 292 (Hospitalized on invasive mechanical ventilation or ECMO)6 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 152 (Hospitalized on invasive mechanical ventilation or ECMO)16 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 293 (Hospitalized on noninvasive ventilation or high-flow oxygen devices)0 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 84 (Hospitalized, requiring supplemental oxygen)26 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 294 (Hospitalized, requiring supplemental oxygen)6 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 153 (Hospitalized on noninvasive ventilation or high-flow oxygen devices)9 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 295 (Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care)0 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 87 (Not hospitalized, limitation on activities and/or requiring home oxygen)36 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 296 (Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care)0 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 154 (Hospitalized, requiring supplemental oxygen)9 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 297 (Not hospitalized, limitation on activities and/or requiring home oxygen)34 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 83 (Hospitalized on noninvasive ventilation or high-flow oxygen devices)25 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 298 (Not hospitalized, no limitations on activities)110 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 155 (Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care)10 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 29Missing4 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 81 (Death or discharged to hospice care)11 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 29Missing2 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 81 (Death or discharged to hospice care)8 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 82 (Hospitalized on invasive mechanical ventilation or ECMO)20 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 83 (Hospitalized on noninvasive ventilation or high-flow oxygen devices)26 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 84 (Hospitalized, requiring supplemental oxygen)26 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 85 (Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care)40 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 86 (Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care)1 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 87 (Not hospitalized, limitation on activities and/or requiring home oxygen)33 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 88 (Not hospitalized, no limitations on activities)34 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 8Missing2 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 151 (Death or discharged to hospice care)24 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 152 (Hospitalized on invasive mechanical ventilation or ECMO)13 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 153 (Hospitalized on noninvasive ventilation or high-flow oxygen devices)9 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 154 (Hospitalized, requiring supplemental oxygen)8 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 155 (Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care)5 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 156 (Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care)2 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 157 (Not hospitalized, limitation on activities and/or requiring home oxygen)48 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 158 (Not hospitalized, no limitations on activities)79 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 15Missing2 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 291 (Death or discharged to hospice care)31 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 292 (Hospitalized on invasive mechanical ventilation or ECMO)6 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 293 (Hospitalized on noninvasive ventilation or high-flow oxygen devices)3 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 294 (Hospitalized, requiring supplemental oxygen)1 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 295 (Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care)1 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 296 (Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care)2 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 297 (Not hospitalized, limitation on activities and/or requiring home oxygen)40 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 298 (Not hospitalized, no limitations on activities)104 Participants
Comparison: Day 8p-value: 0.911995% CI: [0.71, 1.46]Proportional odds model
Comparison: Day 15p-value: 0.647595% CI: [0.75, 1.58]Proportional odds model
Comparison: Day 29p-value: 0.907195% CI: [0.64, 1.48]Proportional odds model
Secondary

Apremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 29

Number of ICU days is the sum of the duration of any episode of ICU admission between Day 1 and Day 29, both inclusive. The number of ICU days of participants who died before or on Day 29 as well as of participants with a score of 7 on the clinical severity status 8-point ordinal scale who were discharged to hospice care by Day 29 was set to 30 (worst possible outcome).

Time frame: Day 1 to Day 29

Population: Apremilast sub-protocol full analysis set

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 296 days2 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 291 day4 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 292 days2 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 293 days2 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 294 days0 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 295 days4 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 290 days124 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 297 days4 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 298 days2 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 299 days1 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2910 days1 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2911 days0 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2912 days1 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2913 days0 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2914 days2 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2915 days0 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2917 days0 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2918 days0 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2920 days0 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2921 days0 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2923 days0 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2925 days1 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2927 days1 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2928 days1 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2929 days8 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2930 days (death or discharged to hospice care)34 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2921 days2 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 290 days122 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2913 days2 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 291 day2 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2929 days2 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 292 days1 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2914 days0 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 293 days4 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2923 days2 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 294 days1 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2915 days1 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 295 days1 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2928 days0 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 296 days3 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2917 days2 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 297 days2 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2925 days0 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 298 days4 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2918 days1 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 299 days1 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2930 days (death or discharged to hospice care)32 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2910 days1 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2920 days1 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2911 days1 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2927 days1 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2912 days1 Participants
p-value: 0.974195% CI: [0.64, 1.53]Proportional odds model
Secondary

Apremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 29

Number of invasive mechanical ventilator days is the sum of the duration of any episode of invasive mechanical ventilator admission between Day 1 and Day 29, both inclusive. The number of invasive mechanical ventilator days of participants who died before or on Day 29 as well as of participants with a score of 7 on the clinical severity status 8-point ordinal scale who were discharged to hospice care by Day 29 was set to 30.

Time frame: Day 1 to Day 29

Population: Apremilast sub-protocol full analysis set

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 296 days1 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2919 days1 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2912 days0 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2922 days1 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2910 days1 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2923 days0 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2913 days2 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2924 days0 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 299 days1 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2925 days3 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2916 days0 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2926 days1 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2911 days1 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2929 days1 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2918 days0 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2930 days (death or discharged to hospice care)34 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 290 days147 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2930 days (death or discharged to hospice care)33 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 290 days147 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 296 days1 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 299 days0 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2910 days0 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2911 days1 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2912 days1 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2913 days0 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2916 days2 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2918 days1 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2919 days0 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2922 days0 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2923 days1 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2924 days1 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2925 days1 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2926 days1 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2929 days0 Participants
p-value: 0.875495% CI: [0.64, 1.7]Proportional odds model
Secondary

Apremilast Sub-protocol: Number of Participants With Treatment-emergent Adverse Events (TEAEs)

An adverse event (AE) is any untoward medical occurrence in a participant, temporally associated with the use of study treatment, whether or not considered related to study treatment. A TEAE is an AE that occurs after the first dose of study drug. A serious AE is any AE that resulted in death, was life-threatening, required inpatient hospitalization or prolongation of hospitalization, resulted in persistent disability/incapacity, a congenital anomaly/birth defect, or an important medical event that may jeopardize the patient or require intervention to prevent an outcome listed above. The Investigator assessed the intensity of each AE according to the CTCAE grades: * Grade 1 Mild; asymptomatic or mild symptoms; * Grade 2 Moderate; minimal, local or noninvasive intervention indicated; * Grade 3 Severe or medically significant, not immediately life-threatening; * Grade 4 Life-threatening; urgent intervention indicated; * Grade 5 Death due to AE.

Time frame: From first dose of study drug to end of study (Day 60)

Population: Apremilast safety analysis set included all participants in the apremilast FAS who received at least one dose of study drug.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Participants With Treatment-emergent Adverse Events (TEAEs)TEAE leading to dose modification16 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Participants With Treatment-emergent Adverse Events (TEAEs)Serious TEAE51 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Participants With Treatment-emergent Adverse Events (TEAEs)Any treatment-emergent adverse event (TEAE)102 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Participants With Treatment-emergent Adverse Events (TEAEs)TEAE with a CTCAE grade ≥ 348 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Number of Participants With Treatment-emergent Adverse Events (TEAEs)TEAE leading to discontinuation of study drug9 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Participants With Treatment-emergent Adverse Events (TEAEs)Serious TEAE57 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Participants With Treatment-emergent Adverse Events (TEAEs)Any treatment-emergent adverse event (TEAE)103 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Participants With Treatment-emergent Adverse Events (TEAEs)TEAE with a CTCAE grade ≥ 357 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Participants With Treatment-emergent Adverse Events (TEAEs)TEAE leading to dose modification6 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Number of Participants With Treatment-emergent Adverse Events (TEAEs)TEAE leading to discontinuation of study drug12 Participants
Lanadelumab Placebo + Standard of CareApremilast Sub-protocol: Number of Participants With Treatment-emergent Adverse Events (TEAEs)TEAE leading to discontinuation of study drug11 Participants
Lanadelumab Placebo + Standard of CareApremilast Sub-protocol: Number of Participants With Treatment-emergent Adverse Events (TEAEs)TEAE leading to dose modification6 Participants
Lanadelumab Placebo + Standard of CareApremilast Sub-protocol: Number of Participants With Treatment-emergent Adverse Events (TEAEs)Any treatment-emergent adverse event (TEAE)100 Participants
Lanadelumab Placebo + Standard of CareApremilast Sub-protocol: Number of Participants With Treatment-emergent Adverse Events (TEAEs)Serious TEAE55 Participants
Lanadelumab Placebo + Standard of CareApremilast Sub-protocol: Number of Participants With Treatment-emergent Adverse Events (TEAEs)TEAE with a CTCAE grade ≥ 354 Participants
Secondary

Apremilast Sub-protocol: Percentage of Participants Who Achieved Clinical Recovery at Days 8, 15, and 29

Clinical recovery is defined as being fit for discharge, i.e., the achievement of a score of 6, 7, or 8 on the clinical severity status 8-point ordinal scale. Participants with a score of 7 discharged to hospice care were not considered fit for discharge. Participants who discontinued the study on or before Days 8, 15, or 29 or with a missing clinical recovery status were considered as not having clinical recovery at each respective time point. Clinical severity status 8-point ordinal scale: 1. Death 2. Hospitalized, on invasive mechanical ventilation or ECMO 3. Hospitalized, on noninvasive ventilation or high-flow oxygen devices 4. Hospitalized, requiring supplemental oxygen 5. Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care 6. Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care 7. Not hospitalized, limitation on activities and/or requiring home oxygen 8. Not hospitalized, no limitations on activities

Time frame: Day 8, Day 15, and Day 29

Population: Apremilast sub-protocol full analysis set

ArmMeasureGroupValue (NUMBER)
Lanadelumab + Standard of CareApremilast Sub-protocol: Percentage of Participants Who Achieved Clinical Recovery at Days 8, 15, and 29Day 836.6 percentage of participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Percentage of Participants Who Achieved Clinical Recovery at Days 8, 15, and 29Day 1557.7 percentage of participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Percentage of Participants Who Achieved Clinical Recovery at Days 8, 15, and 29Day 2966.0 percentage of participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Percentage of Participants Who Achieved Clinical Recovery at Days 8, 15, and 29Day 835.8 percentage of participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Percentage of Participants Who Achieved Clinical Recovery at Days 8, 15, and 29Day 1560.0 percentage of participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Percentage of Participants Who Achieved Clinical Recovery at Days 8, 15, and 29Day 2972.1 percentage of participants
Comparison: Analysis of clinical recovery on Day 8p-value: 0.969595% CI: [-8.7, 9.1]Regression, Logistic
Comparison: Analysis of clinical recovery on Day 895% CI: [0.64, 1.59]
Comparison: Analysis of clinical recovery on Day 15p-value: 0.623695% CI: [-11.9, 7.1]Regression, Logistic
Comparison: Analysis of clinical recovery on Day 1595% CI: [0.59, 1.37]
Comparison: Analysis of clinical recovery on Day 29p-value: 0.166495% CI: [-14.9, 2.5]Regression, Logistic
Comparison: Analysis of clinical recovery on Day 2995% CI: [0.45, 1.15]
Secondary

Apremilast Sub-protocol: Percentage of Participants Who Achieved Oxygen-Free Recovery at Day 29

Oxygen-free recovery at Day 29 is defined as being alive, discharged, and not receiving supplemental oxygen at Day 29. Participants who reached a score of 7 on the ordinal scale for clinical severity who were discharged to hospice care before or on Day 29 were considered as not discharged at Day 29. Participants with a missing oxygen-free recovery status at Day 29 were considered as not having an oxygen-free recovery.

Time frame: Day 29

Population: Apremilast sub-protocol full analysis set

ArmMeasureValue (NUMBER)
Lanadelumab + Standard of CareApremilast Sub-protocol: Percentage of Participants Who Achieved Oxygen-Free Recovery at Day 2959.8 percentage of participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Percentage of Participants Who Achieved Oxygen-Free Recovery at Day 2963.7 percentage of participants
p-value: 0.377395% CI: [-12.9, 4.9]Regression, Logistic
95% CI: [0.52, 1.28]
Secondary

Apremilast Sub-protocol: Percentage of Participants Who Achieved Sustained Clinical Recovery

Sustained clinical recovery is defined as being fit for discharge (achieving a score of 6, 7, or 8 on the clinical severity status 8-point ordinal scale) by Day 29, without re-hospitalization by Day 60. Participants with a score of 7 discharged to hospice care were not considered fit for discharge. Participants who died or discontinued from study or with a missing clinical recovery status at Day 60 were not considered having sustained clinical recovery. Clinical severity status 8-point ordinal scale: 1. Death 2. Hospitalized, on invasive mechanical ventilation or ECMO 3. Hospitalized, on noninvasive ventilation or high flow oxygen devices 4. Hospitalized, requiring supplemental oxygen 5. Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care 6. Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care 7. Not hospitalized, limitation on activities and/or requiring home oxygen 8. Not hospitalized, no limitations on activities

Time frame: Day 60

Population: Apremilast sub-protocol full analysis set

ArmMeasureValue (NUMBER)
Lanadelumab + Standard of CareApremilast Sub-protocol: Percentage of Participants Who Achieved Sustained Clinical Recovery66.0 percentage of participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Percentage of Participants Who Achieved Sustained Clinical Recovery66.3 percentage of participants
p-value: 0.904395% CI: [-9.3, 8.3]Regression, Logistic
95% CI: [0.62, 1.54]
Secondary

Apremilast Sub-protocol: Percentage of Participants Who Died Before or on Day 29

All-cause mortality is death due to any cause. Participants with an unknown alive/death status on Day 29 were considered alive for this analysis, with the exception of patients with a score of 7 who were discharged to hospice care before or on Day 29.

Time frame: Day 1 to Day 29

Population: Apremilast sub-protocol full analysis set

ArmMeasureValue (NUMBER)
Lanadelumab + Standard of CareApremilast Sub-protocol: Percentage of Participants Who Died Before or on Day 2917.5 percentage of participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Percentage of Participants Who Died Before or on Day 2917.4 percentage of participants
p-value: 0.966595% CI: [-7.3, 7.6]Regression, Logistic
95% CI: [0.59, 1.74]
Secondary

Apremilast Sub-protocol: Percentage of Participants With a ≥ 2-point Improvement From Baseline or Fit for Discharge on the Clinical Severity Status 8-Point Ordinal Scale at Day 29

Fit for discharge is defined as achieving a score of 6, 7, or 8 on the clinical severity status 8-point ordinal scale. Participants with an ordinal scale score of 7 must not have been discharged to hospice care to be considered as fit for discharge. Participants with a missing clinical severity score at Day 29 were considered as not having met the event at Day 29. The clinical severity status 8-point ordinal scale scores are: 1. Death 2. Hospitalized, on invasive mechanical ventilation or ECMO 3. Hospitalized, on noninvasive ventilation or high-flow oxygen devices 4. Hospitalized, requiring supplemental oxygen 5. Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care (COVID-19 related or otherwise) 6. Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care 7. Not hospitalized, limitation on activities and/or requiring home oxygen 8. Not hospitalized, no limitations on activities

Time frame: Baseline (Day 1) and Day 29

Population: Apremilast sub-protocol full analysis set

ArmMeasureValue (NUMBER)
Lanadelumab + Standard of CareApremilast Sub-protocol: Percentage of Participants With a ≥ 2-point Improvement From Baseline or Fit for Discharge on the Clinical Severity Status 8-Point Ordinal Scale at Day 2974.7 percentage of participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Percentage of Participants With a ≥ 2-point Improvement From Baseline or Fit for Discharge on the Clinical Severity Status 8-Point Ordinal Scale at Day 2977.9 percentage of participants
p-value: 0.484695% CI: [-11.2, 5.3]Regression, Logistic
95% CI: [0.51, 1.37]
Secondary

Apremilast Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 29

The worst post-baseline score (lower scores are worse) through Day 29 in the clinical severity status 8-point ordinal scale, derived from all scores recorded after baseline up to and including Day 29. Participants with a score of 7 discharged to hospice care are considered as having a score of 1 (death) instead of a score of 7 for this endpoint. The clinical severity status 8-point ordinal scale scores are: 1. Death 2. Hospitalized, on invasive mechanical ventilation or extracorporeal membrane oxygenation (ECMO) 3. Hospitalized, on noninvasive ventilation or high flow oxygen devices 4. Hospitalized, requiring supplemental oxygen 5. Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care (COVID-19 related or otherwise) 6. Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care 7. Not hospitalized, limitation on activities and/or requiring home oxygen 8. Not hospitalized, no limitations on activities

Time frame: Day 2 to Day 29

Population: Apremilast sub-protocol full analysis set

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Lanadelumab + Standard of CareApremilast Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 292 (Hospitalized on invasive mechanical ventilation or ECMO)13 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 296 (Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care)0 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 294 (Hospitalized, requiring supplemental oxygen)75 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 297 (Not hospitalized, limitation on activities and/or requiring home oxygen)5 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 293 (Hospitalized on noninvasive ventilation or high-flow oxygen devices)37 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 298 (Not hospitalized, no limitations on activities)5 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 295 (Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care)21 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 29Missing4 Participants
Lanadelumab + Standard of CareApremilast Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 291 (Death or discharged to hospice care)34 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 29Missing2 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 291 (Death or discharged to hospice care)31 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 292 (Hospitalized on invasive mechanical ventilation or ECMO)10 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 293 (Hospitalized on noninvasive ventilation or high-flow oxygen devices)43 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 294 (Hospitalized, requiring supplemental oxygen)62 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 295 (Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care)35 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 296 (Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care)0 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 297 (Not hospitalized, limitation on activities and/or requiring home oxygen)2 Participants
Lanadelumab Placebo ControlApremilast Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 298 (Not hospitalized, no limitations on activities)5 Participants
p-value: 0.450795% CI: [0.8, 1.66]Proportional odds model
Secondary

Lanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29

The clinical severity status 8-point ordinal scale scores are: 1. Death 2. Hospitalized, on invasive mechanical ventilation or extracorporeal membrane oxygenation (ECMO) 3. Hospitalized, on noninvasive ventilation or high flow oxygen devices 4. Hospitalized, requiring supplemental oxygen 5. Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care (COVID-19 related or otherwise) 6. Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care 7. Not hospitalized, limitation on activities and/or requiring home oxygen 8. Not hospitalized, no limitations on activities Participants with a score of 7 who were discharged to hospice care are counted with participants with a score of 1 (death) for this endpoint.

Time frame: Day 8, Day 15, and Day 29

Population: Lanadelumab sub-protocol primary analysis set

ArmMeasureGroupCategoryValue (COUNT_OF_PARTICIPANTS)
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 88 (Not hospitalized, no limitations on activities)8 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 156 (Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care)0 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 85 (Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care)1 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 157 (Not hospitalized, limitation on activities and/or requiring home oxygen)5 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 8Missing1 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 158 (Not hospitalized, no limitations on activities)12 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 82 (Hospitalized on invasive mechanical ventilation or ECMO)4 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 15Missing1 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 151 (Death or discharged to hospice care)3 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 291 (Death or discharged to hospice care)7 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 86 (Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care)1 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 292 (Hospitalized on invasive mechanical ventilation or ECMO)0 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 152 (Hospitalized on invasive mechanical ventilation or ECMO)3 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 293 (Hospitalized on noninvasive ventilation or high-flow oxygen devices)0 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 84 (Hospitalized, requiring supplemental oxygen)2 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 294 (Hospitalized, requiring supplemental oxygen)0 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 153 (Hospitalized on noninvasive ventilation or high-flow oxygen devices)1 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 295 (Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care)0 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 87 (Not hospitalized, limitation on activities and/or requiring home oxygen)2 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 296 (Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care)0 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 154 (Hospitalized, requiring supplemental oxygen)0 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 297 (Not hospitalized, limitation on activities and/or requiring home oxygen)5 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 83 (Hospitalized on noninvasive ventilation or high-flow oxygen devices)3 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 298 (Not hospitalized, no limitations on activities)12 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 155 (Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care)0 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 29Missing1 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 81 (Death or discharged to hospice care)3 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 29Missing0 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 81 (Death or discharged to hospice care)3 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 82 (Hospitalized on invasive mechanical ventilation or ECMO)6 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 83 (Hospitalized on noninvasive ventilation or high-flow oxygen devices)4 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 84 (Hospitalized, requiring supplemental oxygen)6 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 85 (Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care)0 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 86 (Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care)1 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 87 (Not hospitalized, limitation on activities and/or requiring home oxygen)3 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 88 (Not hospitalized, no limitations on activities)7 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 8Missing0 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 151 (Death or discharged to hospice care)7 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 152 (Hospitalized on invasive mechanical ventilation or ECMO)4 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 153 (Hospitalized on noninvasive ventilation or high-flow oxygen devices)0 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 154 (Hospitalized, requiring supplemental oxygen)2 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 155 (Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care)0 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 156 (Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care)1 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 157 (Not hospitalized, limitation on activities and/or requiring home oxygen)3 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 158 (Not hospitalized, no limitations on activities)13 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 15Missing0 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 291 (Death or discharged to hospice care)9 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 292 (Hospitalized on invasive mechanical ventilation or ECMO)2 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 293 (Hospitalized on noninvasive ventilation or high-flow oxygen devices)0 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 294 (Hospitalized, requiring supplemental oxygen)0 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 295 (Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care)0 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 296 (Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care)0 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 297 (Not hospitalized, limitation on activities and/or requiring home oxygen)6 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 298 (Not hospitalized, no limitations on activities)13 Participants
Secondary

Lanadelumab Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 29

Number of ICU days is the sum of the duration of any episode of ICU admission between Day 1 and Day 29, both inclusive. The number of ICU days of participants who died before or on Day 29 as well as of participants with a score of 7 on the clinical severity status 8-point ordinal scale who were discharged to hospice care by Day 29 was set to 30 (worst possible outcome).

Time frame: Day 1 to Day 29

Population: Lanadelumab sub-protocol primary analysis set

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 295 days0 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2911 days2 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 293 days0 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2913 days1 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 296 days0 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2915 days0 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 291 day1 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2921 days0 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 298 days1 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2930 days (death or discharged to hospice care)7 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 290 days13 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2930 days (death or discharged to hospice care)9 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 290 days10 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 291 day1 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 293 days1 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 295 days1 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 296 days2 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 298 days3 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2911 days0 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2913 days1 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2915 days1 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2921 days1 Participants
Secondary

Lanadelumab Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 29

Number of invasive mechanical ventilator days is the sum of the duration of any episode of invasive mechanical ventilator admission between Day 1 and Day 29, both inclusive. The number of invasive mechanical ventilator days of participants who died before or on Day 29 as well as of participants with a score of 7 on the clinical severity status 8-point ordinal scale who were discharged to hospice care by Day 29 was set to 30.

Time frame: Day 1 to Day 29

Population: Lanadelumab sub-protocol primary analysis set

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 296 days0 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2924 days0 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2916 days0 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2930 days (death or discharged to hospice care)8 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 290 days17 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2930 days (death or discharged to hospice care)9 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 290 days18 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 296 days1 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2916 days1 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2924 days1 Participants
Secondary

Lanadelumab Sub-protocol: Number of Participants With Treatment-emergent Adverse Events (TEAEs)

An adverse event (AE) is any untoward medical occurrence in a participant, temporally associated with the use of study treatment, whether or not considered related to study treatment. A TEAE is an AE that occurs after the first dose of study drug. A Serious AE is any AE that resulted in death, was life-threatening, required inpatient hospitalization or prolongation of hospitalization, resulted in persistent disability/incapacity, a congenital anomaly/birth defect, or an important medical event that may jeopardize the patient or require intervention to prevent an outcome listed above. The Investigator assessed the intensity of each AE according to the Common Terminology Criteria for Adverse Events (CTCAE): * Grade 1 Mild; asymptomatic or mild symptoms; * Grade 2 Moderate; minimal, local or noninvasive intervention indicated; * Grade 3 Severe or medically significant, not immediately life-threatening; * Grade 4 Life-threatening; urgent intervention indicated; * Grade 5 Death due to AE.

Time frame: From first dose of study drug to end of study (Day 60)

Population: Lanadelumab safety analysis set included all participants in the lanadelumab FAS who received at least one dose of study drug.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Number of Participants With Treatment-emergent Adverse Events (TEAEs)TEAE leading to dose modification2 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Number of Participants With Treatment-emergent Adverse Events (TEAEs)Serious TEAE11 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Number of Participants With Treatment-emergent Adverse Events (TEAEs)Any treatment-emergent adverse event (TEAE)17 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Number of Participants With Treatment-emergent Adverse Events (TEAEs)TEAE with a CTCAE grade ≥ 311 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Number of Participants With Treatment-emergent Adverse Events (TEAEs)TEAE leading to discontinuation of study drug1 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Number of Participants With Treatment-emergent Adverse Events (TEAEs)Serious TEAE18 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Number of Participants With Treatment-emergent Adverse Events (TEAEs)Any treatment-emergent adverse event (TEAE)22 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Number of Participants With Treatment-emergent Adverse Events (TEAEs)TEAE with a CTCAE grade ≥ 318 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Number of Participants With Treatment-emergent Adverse Events (TEAEs)TEAE leading to dose modification3 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Number of Participants With Treatment-emergent Adverse Events (TEAEs)TEAE leading to discontinuation of study drug5 Participants
Lanadelumab Placebo + Standard of CareLanadelumab Sub-protocol: Number of Participants With Treatment-emergent Adverse Events (TEAEs)TEAE leading to discontinuation of study drug0 Participants
Lanadelumab Placebo + Standard of CareLanadelumab Sub-protocol: Number of Participants With Treatment-emergent Adverse Events (TEAEs)TEAE leading to dose modification0 Participants
Lanadelumab Placebo + Standard of CareLanadelumab Sub-protocol: Number of Participants With Treatment-emergent Adverse Events (TEAEs)Any treatment-emergent adverse event (TEAE)1 Participants
Lanadelumab Placebo + Standard of CareLanadelumab Sub-protocol: Number of Participants With Treatment-emergent Adverse Events (TEAEs)Serious TEAE1 Participants
Lanadelumab Placebo + Standard of CareLanadelumab Sub-protocol: Number of Participants With Treatment-emergent Adverse Events (TEAEs)TEAE with a CTCAE grade ≥ 31 Participants
Secondary

Lanadelumab Sub-protocol: Percentage of Participants Who Achieved Clinical Recovery by Days 8, 15, and 29

Clinical recovery is defined as being fit for discharge, i.e., the achievement of a score of 6, 7, or 8 on the clinical severity status 8-point ordinal scale. Participants with a score of 7 discharged to hospice care were not considered fit for discharge. Participants who discontinued the study on or before Days 8, 15, or 29 or with a missing clinical recovery status were considered as not having clinical recovery at each respective time point. Clinical severity status 8-point ordinal scale: 1. Death 2. Hospitalized, on invasive mechanical ventilation or ECMO 3. Hospitalized, on noninvasive ventilation or high-flow oxygen devices 4. Hospitalized, requiring supplemental oxygen 5. Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care 6. Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care 7. Not hospitalized, limitation on activities and/or requiring home oxygen 8. Not hospitalized, no limitations on activities

Time frame: Day 8, Day 15, and Day 29

Population: Lanadelumab sub-protocol primary analysis set

ArmMeasureGroupValue (NUMBER)
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Percentage of Participants Who Achieved Clinical Recovery by Days 8, 15, and 29Day 844.0 percentage of participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Percentage of Participants Who Achieved Clinical Recovery by Days 8, 15, and 29Day 1556.0 percentage of participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Percentage of Participants Who Achieved Clinical Recovery by Days 8, 15, and 29Day 2960.0 percentage of participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Percentage of Participants Who Achieved Clinical Recovery by Days 8, 15, and 29Day 836.7 percentage of participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Percentage of Participants Who Achieved Clinical Recovery by Days 8, 15, and 29Day 1556.7 percentage of participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Percentage of Participants Who Achieved Clinical Recovery by Days 8, 15, and 29Day 2963.3 percentage of participants
Secondary

Lanadelumab Sub-protocol: Percentage of Participants Who Achieved Oxygen-Free Recovery at Day 29

Oxygen-free recovery at Day 29 is defined as being alive, discharged, and not receiving supplemental oxygen at Day 29. Participants who reached a score of 7 on the ordinal scale for clinical severity who were discharged to hospice care before or on Day 29 were considered as not discharged at Day 29. Participants with a missing oxygen-free recovery status at Day 29 were considered as not having an oxygen-free recovery.

Time frame: Day 29

Population: Lanadelumab sub-protocol primary analysis set

ArmMeasureValue (NUMBER)
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Percentage of Participants Who Achieved Oxygen-Free Recovery at Day 2952.0 percentage of participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Percentage of Participants Who Achieved Oxygen-Free Recovery at Day 2956.7 percentage of participants
Secondary

Lanadelumab Sub-protocol: Percentage of Participants Who Achieved Sustained Clinical Recovery

Sustained clinical recovery is defined as being fit for discharge (achieving a score of 6, 7, or 8 on the clinical severity status 8-point ordinal scale) by Day 29, without re-hospitalization by Day 60. Participants with a score of 7 discharged to hospice care were not considered fit for discharge. Participants who died or discontinued from study or with a missing clinical recovery status at Day 60 were not considered having sustained clinical recovery. Clinical severity status 8-point ordinal scale: 1. Death 2. Hospitalized, on invasive mechanical ventilation or ECMO 3. Hospitalized, on noninvasive ventilation or high flow oxygen devices 4. Hospitalized, requiring supplemental oxygen 5. Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care 6. Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care 7. Not hospitalized, limitation on activities and/or requiring home oxygen 8. Not hospitalized, no limitations on activities

Time frame: Day 60

Population: Lanadelumab sub-protocol primary analysis set

ArmMeasureValue (NUMBER)
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Percentage of Participants Who Achieved Sustained Clinical Recovery40.0 percentage of participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Percentage of Participants Who Achieved Sustained Clinical Recovery56.7 percentage of participants
Secondary

Lanadelumab Sub-protocol: Percentage of Participants Who Died Before or on Day 29

All-cause mortality is death due to any cause. Participants with an unknown alive/death status on Day 29 were considered alive for this analysis, with the exception of patients with a score of 7 who were discharged to hospice care before or on Day 29.

Time frame: Day 1 to Day 29

Population: Lanadelumab sub-protocol primary analysis set

ArmMeasureValue (NUMBER)
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Percentage of Participants Who Died Before or on Day 2932.0 percentage of participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Percentage of Participants Who Died Before or on Day 2930.0 percentage of participants
Secondary

Lanadelumab Sub-protocol: Percentage of Participants With a ≥ 2-point Improvement From Baseline or Fit for Discharge on the Clinical Severity Status 8-Point Ordinal Scale at Day 29

Fit for discharge is defined as achieving a score of 6, 7, or 8 on the clinical severity status 8-point ordinal scale. Participants with an ordinal scale score of 7 must not have been discharged to hospice care to be considered as fit for discharge. Participants with a missing clinical severity score at Day 29 were considered as not having met the event at Day 29. The clinical severity status 8-point ordinal scale scores are: 1. Death 2. Hospitalized, on invasive mechanical ventilation or extracorporeal membrane oxygenation (ECMO) 3. Hospitalized, on noninvasive ventilation or high-flow oxygen devices 4. Hospitalized, requiring supplemental oxygen 5. Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care (COVID-19 related or otherwise) 6. Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care 7. Not hospitalized, limitation on activities and/or requiring home oxygen 8. Not hospitalized, no limitations on activities

Time frame: Baseline (Day 1) and Day 29

Population: Lanadelumab sub-protocol primary analysis set

ArmMeasureValue (NUMBER)
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Percentage of Participants With a ≥ 2-point Improvement From Baseline or Fit for Discharge on the Clinical Severity Status 8-Point Ordinal Scale at Day 2972.0 percentage of participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Percentage of Participants With a ≥ 2-point Improvement From Baseline or Fit for Discharge on the Clinical Severity Status 8-Point Ordinal Scale at Day 2963.3 percentage of participants
Secondary

Lanadelumab Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-point Ordinal Scale From Baseline to Day 29

The worst post-baseline score (lower scores are worse) through Day 29 in the clinical severity status 8-point ordinal scale, derived from all scores recorded after baseline up to and including Day 29. Participants with a score of 7 discharged to hospice care are considered as having a score of 1 (death) instead of a score of 7 for this endpoint. The clinical severity status 8-point ordinal scale scores are: 1. Death 2. Hospitalized, on invasive mechanical ventilation or ECMO 3. Hospitalized, on noninvasive ventilation or high flow oxygen devices 4. Hospitalized, requiring supplemental oxygen 5. Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care (COVID-19 related or otherwise) 6. Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care 7. Not hospitalized, limitation on activities and/or requiring home oxygen 8. Not hospitalized, no limitations on activities

Time frame: Day 2 to Day 29

Population: Lanadelumab sub-protocol primary analysis set

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-point Ordinal Scale From Baseline to Day 292 (Hospitalized on invasive mechanical ventilation or ECMO)0 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-point Ordinal Scale From Baseline to Day 296 (Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care)0 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-point Ordinal Scale From Baseline to Day 294 (Hospitalized, requiring supplemental oxygen)8 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-point Ordinal Scale From Baseline to Day 297 (Not hospitalized, limitation on activities and/or requiring home oxygen)0 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-point Ordinal Scale From Baseline to Day 293 (Hospitalized on noninvasive ventilation or high-flow oxygen devices)6 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-point Ordinal Scale From Baseline to Day 298 (Not hospitalized, no limitations on activities)1 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-point Ordinal Scale From Baseline to Day 295 (Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care)1 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-point Ordinal Scale From Baseline to Day 29Missing1 Participants
Lanadelumab + Standard of CareLanadelumab Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-point Ordinal Scale From Baseline to Day 291 (Death or discharged to hospice care)8 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-point Ordinal Scale From Baseline to Day 29Missing0 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-point Ordinal Scale From Baseline to Day 291 (Death or discharged to hospice care)9 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-point Ordinal Scale From Baseline to Day 292 (Hospitalized on invasive mechanical ventilation or ECMO)4 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-point Ordinal Scale From Baseline to Day 293 (Hospitalized on noninvasive ventilation or high-flow oxygen devices)5 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-point Ordinal Scale From Baseline to Day 294 (Hospitalized, requiring supplemental oxygen)11 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-point Ordinal Scale From Baseline to Day 295 (Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care)0 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-point Ordinal Scale From Baseline to Day 296 (Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care)0 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-point Ordinal Scale From Baseline to Day 297 (Not hospitalized, limitation on activities and/or requiring home oxygen)0 Participants
Lanadelumab Placebo ControlLanadelumab Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-point Ordinal Scale From Baseline to Day 298 (Not hospitalized, no limitations on activities)1 Participants
Secondary

Zilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29

The clinical severity status 8-point ordinal scale scores are: 1. Death 2. Hospitalized, on invasive mechanical ventilation or ECMO 3. Hospitalized, on noninvasive ventilation or high flow oxygen devices 4. Hospitalized, requiring supplemental oxygen 5. Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care (COVID-19 related or otherwise) 6. Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care 7. Not hospitalized, limitation on activities and/or requiring home oxygen 8. Not hospitalized, no limitations on activities Participants with a score of 7 who were discharged to hospice care are counted with participants with a score of 1 (death) for this endpoint.

Time frame: Day 8, Day 15, and Day 29

Population: Zilucoplan sub-protocol full analysis set

ArmMeasureGroupCategoryValue (COUNT_OF_PARTICIPANTS)
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 88 (Not hospitalized, no limitations on activities)11 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 156 (Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care)0 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 85 (Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care)5 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 157 (Not hospitalized, limitation on activities and/or requiring home oxygen)25 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 8Missing5 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 158 (Not hospitalized, no limitations on activities)31 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 82 (Hospitalized on invasive mechanical ventilation or ECMO)24 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 15Missing5 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 151 (Death or discharged to hospice care)8 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 291 (Death or discharged to hospice care)14 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 86 (Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care)0 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 292 (Hospitalized on invasive mechanical ventilation or ECMO)10 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 152 (Hospitalized on invasive mechanical ventilation or ECMO)16 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 293 (Hospitalized on noninvasive ventilation or high-flow oxygen devices)1 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 84 (Hospitalized, requiring supplemental oxygen)16 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 294 (Hospitalized, requiring supplemental oxygen)5 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 153 (Hospitalized on noninvasive ventilation or high-flow oxygen devices)3 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 295 (Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care)1 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 87 (Not hospitalized, limitation on activities and/or requiring home oxygen)22 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 296 (Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care)0 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 154 (Hospitalized, requiring supplemental oxygen)10 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 297 (Not hospitalized, limitation on activities and/or requiring home oxygen)20 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 83 (Hospitalized on noninvasive ventilation or high-flow oxygen devices)12 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 298 (Not hospitalized, no limitations on activities)44 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 155 (Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care)2 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 29Missing5 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 81 (Death or discharged to hospice care)5 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 29Missing2 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 81 (Death or discharged to hospice care)5 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 82 (Hospitalized on invasive mechanical ventilation or ECMO)14 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 83 (Hospitalized on noninvasive ventilation or high-flow oxygen devices)8 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 84 (Hospitalized, requiring supplemental oxygen)14 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 85 (Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care)10 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 86 (Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care)1 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 87 (Not hospitalized, limitation on activities and/or requiring home oxygen)9 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 88 (Not hospitalized, no limitations on activities)12 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 8Missing2 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 151 (Death or discharged to hospice care)14 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 152 (Hospitalized on invasive mechanical ventilation or ECMO)7 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 153 (Hospitalized on noninvasive ventilation or high-flow oxygen devices)3 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 154 (Hospitalized, requiring supplemental oxygen)6 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 155 (Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care)2 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 156 (Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care)1 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 157 (Not hospitalized, limitation on activities and/or requiring home oxygen)14 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 158 (Not hospitalized, no limitations on activities)26 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 15Missing2 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 291 (Death or discharged to hospice care)18 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 292 (Hospitalized on invasive mechanical ventilation or ECMO)2 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 293 (Hospitalized on noninvasive ventilation or high-flow oxygen devices)1 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 294 (Hospitalized, requiring supplemental oxygen)1 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 295 (Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care)0 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 296 (Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care)2 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 297 (Not hospitalized, limitation on activities and/or requiring home oxygen)14 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Clinical Severity Status 8-Point Ordinal Scale Score at Days 8, 15, and 29Day 298 (Not hospitalized, no limitations on activities)35 Participants
Secondary

Zilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 29

Number of ICU days is the sum of the duration of any episode of ICU admission between Day 1 and Day 29, both inclusive. The number of ICU days of participants who died before or on Day 29 as well as of participants with a score of 7 on the clinical severity status 8-point ordinal scale who were discharged to hospice care by Day 29 was set to 30 (worst possible outcome).

Time frame: Day 1 to Day 29

Population: Zilucoplan sub-protocol full analysis set

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2913 days1 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 297 days4 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2914 days1 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 290 days56 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2915 days0 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 298 days0 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2917 days1 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 295 days1 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2918 days1 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 299 days3 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2921 days0 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 291 day0 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2922 days1 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2910 days0 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2925 days1 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 296 days1 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2926 days1 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2911 days1 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2929 days8 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 294 days0 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2930 days (death or discharged to hospice care)17 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 293 days2 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2930 days (death or discharged to hospice care)18 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 290 days34 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 291 day2 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 293 days2 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 294 days1 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 295 days1 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 296 days3 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 297 days0 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 298 days4 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 299 days1 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2910 days1 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2911 days0 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2913 days2 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2914 days0 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2915 days1 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2917 days1 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2918 days0 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2921 days2 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2922 days0 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2925 days0 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2926 days0 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Intensive Care Unit (ICU) Days From Day 1 Through Day 2929 days2 Participants
Secondary

Zilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 29

Number of invasive mechanical ventilator days is the sum of the duration of any episode of invasive mechanical ventilator admission between Day 1 and Day 29, both inclusive. The number of invasive mechanical ventilator days of participants who died before or on Day 29 as well as of participants with a score of 7 on the clinical severity status 8-point ordinal scale who were discharged to hospice care by Day 29 was set to 30.

Time frame: Day 1 to Day 29

Population: Zilucoplan sub-protocol full analysis set

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 296 days0 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2922 days1 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2912 days0 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2924 days1 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 299 days1 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2925 days1 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2913 days1 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2926 days1 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 297 days4 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2927 days1 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2916 days0 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2928 days1 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2910 days1 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2929 days1 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2918 days1 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2930 days (death or discharged to hospice care)18 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 290 days67 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2930 days (death or discharged to hospice care)18 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 290 days52 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 296 days1 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 297 days0 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 299 days0 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2910 days0 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2912 days1 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2913 days0 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2916 days1 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2918 days0 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2922 days0 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2924 days1 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2925 days0 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2926 days1 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2927 days0 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2928 days0 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Invasive Mechanical Ventilator Days From Day 1 Through Day 2929 days0 Participants
Secondary

Zilucoplan Sub-protocol: Number of Participants With Treatment-emergent Adverse Events

An adverse event is any untoward medical occurrence in a participant, temporally associated with the use of study treatment, whether or not considered related to study treatment. A TEAE is an AE that occurs after the first dose of study drug. A serious AE is any AE that resulted in death, was life-threatening, required inpatient hospitalization or prolongation of hospitalization, resulted in persistent disability/incapacity, a congenital anomaly/birth defect, or an important medical event that may jeopardize the patient or require intervention to prevent an outcome listed above. The Investigator assessed the intensity of each AE according to the CTCAE grades: * Grade 1 Mild; asymptomatic or mild symptoms; * Grade 2 Moderate; minimal, local or noninvasive intervention indicated; * Grade 3 Severe or medically significant, not immediately life-threatening; * Grade 4 Life-threatening; urgent intervention indicated; * Grade 5 Death due to AE.

Time frame: From first dose of study drug to end of study (Day 60)

Population: Zilucoplan safety analysis set included all participants in the zilucoplan FAS who received at least one dose of study drug.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Participants With Treatment-emergent Adverse EventsTEAE leading to dose modification0 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Participants With Treatment-emergent Adverse EventsSerious TEAE31 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Participants With Treatment-emergent Adverse EventsAny treatment-emergent adverse event (TEAE)65 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Participants With Treatment-emergent Adverse EventsTEAE with a CTCAE grade ≥ 334 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Number of Participants With Treatment-emergent Adverse EventsTEAE leading to discontinuation of study drug7 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Participants With Treatment-emergent Adverse EventsSerious TEAE29 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Participants With Treatment-emergent Adverse EventsAny treatment-emergent adverse event (TEAE)47 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Participants With Treatment-emergent Adverse EventsTEAE with a CTCAE grade ≥ 329 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Participants With Treatment-emergent Adverse EventsTEAE leading to dose modification5 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Number of Participants With Treatment-emergent Adverse EventsTEAE leading to discontinuation of study drug5 Participants
Lanadelumab Placebo + Standard of CareZilucoplan Sub-protocol: Number of Participants With Treatment-emergent Adverse EventsTEAE leading to discontinuation of study drug1 Participants
Lanadelumab Placebo + Standard of CareZilucoplan Sub-protocol: Number of Participants With Treatment-emergent Adverse EventsTEAE leading to dose modification0 Participants
Lanadelumab Placebo + Standard of CareZilucoplan Sub-protocol: Number of Participants With Treatment-emergent Adverse EventsAny treatment-emergent adverse event (TEAE)4 Participants
Lanadelumab Placebo + Standard of CareZilucoplan Sub-protocol: Number of Participants With Treatment-emergent Adverse EventsSerious TEAE2 Participants
Lanadelumab Placebo + Standard of CareZilucoplan Sub-protocol: Number of Participants With Treatment-emergent Adverse EventsTEAE with a CTCAE grade ≥ 33 Participants
Secondary

Zilucoplan Sub-protocol: Percentage of Participants Who Achieved Clinical Recovery by Days 8, 15, and 29

Clinical recovery is defined as being fit for discharge, i.e., the achievement of a score of 6, 7, or 8 on the clinical severity status 8-point ordinal scale. Participants with a score of 7 discharged to hospice care were not considered fit for discharge. Participants who discontinued the study on or before Days 8, 15, or 29 or with a missing clinical recovery status were considered as not having clinical recovery at each respective time point. Clinical severity status 8-point ordinal scale: 1. Death 2. Hospitalized, on invasive mechanical ventilation or ECMO 3. Hospitalized, on noninvasive ventilation or high-flow oxygen devices 4. Hospitalized, requiring supplemental oxygen 5. Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care 6. Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care 7. Not hospitalized, limitation on activities and/or requiring home oxygen 8. Not hospitalized, no limitations on activities

Time frame: Day 8, Day 15, and Day 29

Population: Zilucoplan sub-protocol full analysis set

ArmMeasureGroupValue (NUMBER)
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Percentage of Participants Who Achieved Clinical Recovery by Days 8, 15, and 29Day 833.0 percentage of participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Percentage of Participants Who Achieved Clinical Recovery by Days 8, 15, and 29Day 1553.0 percentage of participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Percentage of Participants Who Achieved Clinical Recovery by Days 8, 15, and 29Day 2960.0 percentage of participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Percentage of Participants Who Achieved Clinical Recovery by Days 8, 15, and 29Day 830.7 percentage of participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Percentage of Participants Who Achieved Clinical Recovery by Days 8, 15, and 29Day 1553.3 percentage of participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Percentage of Participants Who Achieved Clinical Recovery by Days 8, 15, and 29Day 2966.7 percentage of participants
Secondary

Zilucoplan Sub-protocol: Percentage of Participants Who Achieved Oxygen-Free Recovery at Day 29

Oxygen-free recovery at Day 29 is defined as being alive, discharged, and not receiving supplemental oxygen at Day 29. Participants who reached a score of 7 on the ordinal scale for clinical severity who were discharged to hospice care before or on Day 29 were considered as not discharged at Day 29. Participants with a missing oxygen-free recovery status at Day 29 were considered as not having an oxygen-free recovery.

Time frame: Day 29

Population: Zilucoplan sub-protocol full analysis set

ArmMeasureValue (NUMBER)
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Percentage of Participants Who Achieved Oxygen-Free Recovery at Day 2954.0 percentage of participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Percentage of Participants Who Achieved Oxygen-Free Recovery at Day 2960.0 percentage of participants
Secondary

Zilucoplan Sub-protocol: Percentage of Participants Who Achieved Sustained Clinical Recovery

Sustained clinical recovery is defined as being fit for discharge (achieving a score of 6, 7, or 8 on the clinical severity status 8-point ordinal scale) by Day 29, without re-hospitalization by Day 60. Participants with a score of 7 discharged to hospice care were not considered fit for discharge. Participants who died or discontinued from study or with a missing clinical recovery status at Day 60 were not considered having sustained clinical recovery. Clinical severity status 8-point ordinal scale: 1. Death 2. Hospitalized, on invasive mechanical ventilation or ECMO 3. Hospitalized, on noninvasive ventilation or high flow oxygen devices 4. Hospitalized, requiring supplemental oxygen 5. Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care 6. Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care 7. Not hospitalized, limitation on activities and/or requiring home oxygen 8. Not hospitalized, no limitations on activities

Time frame: Day 60

Population: Zilucoplan sub-protocol full analysis set

ArmMeasureValue (NUMBER)
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Percentage of Participants Who Achieved Sustained Clinical Recovery55.0 percentage of participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Percentage of Participants Who Achieved Sustained Clinical Recovery64.0 percentage of participants
Secondary

Zilucoplan Sub-protocol: Percentage of Participants Who Died Before or on Day 29

All-cause mortality is death due to any cause. Participants with an unknown alive/death status on Day 29 were considered alive for this analysis, with the exception of patients with a score of 7 who were discharged to hospice care before or on Day 29.

Time frame: Day 1 to Day 29

Population: Zilucoplan sub-protocol full analysis set

ArmMeasureValue (NUMBER)
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Percentage of Participants Who Died Before or on Day 2918.0 percentage of participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Percentage of Participants Who Died Before or on Day 2924.0 percentage of participants
Secondary

Zilucoplan Sub-protocol: Percentage of Participants With a ≥ 2-point Improvement From Baseline or Fit for Discharge on the Clinical Severity Status 8-Point Ordinal Scale at Day 29

Fit for discharge is defined as achieving a score of 6, 7, or 8 on the clinical severity status 8-point ordinal scale. Participants with an ordinal scale score of 7 must not have been discharged to hospice care to be considered as fit for discharge. Participants with a missing clinical severity score at Day 29 were considered as not having met the event at Day 29. The clinical severity status 8-point ordinal scale scores are: 1. Death 2. Hospitalized, on invasive mechanical ventilation or ECMO 3. Hospitalized, on noninvasive ventilation or high-flow oxygen devices 4. Hospitalized, requiring supplemental oxygen 5. Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care (COVID-19 related or otherwise) 6. Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care 7. Not hospitalized, limitation on activities and/or requiring home oxygen 8. Not hospitalized, no limitations on activities

Time frame: Baseline (Day 1) and Day 29

Population: Zilucoplan sub-protocol full analysis set

ArmMeasureValue (NUMBER)
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Percentage of Participants With a ≥ 2-point Improvement From Baseline or Fit for Discharge on the Clinical Severity Status 8-Point Ordinal Scale at Day 2966.0 percentage of participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Percentage of Participants With a ≥ 2-point Improvement From Baseline or Fit for Discharge on the Clinical Severity Status 8-Point Ordinal Scale at Day 2969.3 percentage of participants
Secondary

Zilucoplan Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 29

The worst post-baseline score (lower scores are worse) through Day 29 in the clinical severity status 8-point ordinal scale scores, derived from all scores recorded after baseline up to and including Day 29. Participants with a score of 7 discharged to hospice care were considered as having a score of 1 (death) instead of a score of 7 for this endpoint. The clinical severity status 8-point ordinal scale scores scores are: 1. Death 2. Hospitalized, on invasive mechanical ventilation or ECMO 3. Hospitalized, on noninvasive ventilation or high flow oxygen devices 4. Hospitalized, requiring supplemental oxygen 5. Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care (COVID-19 related or otherwise) 6. Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care 7. Not hospitalized, limitation on activities and/or requiring home oxygen 8. Not hospitalized, no limitations on activities

Time frame: Day 2 to Day 29

Population: Zilucoplan sub-protocol full analysis set

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 292 (Hospitalized on invasive mechanical ventilation or ECMO)21 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 296 (Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care)0 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 294 (Hospitalized, requiring supplemental oxygen)30 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 297 (Not hospitalized, limitation on activities and/or requiring home oxygen)1 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 293 (Hospitalized on noninvasive ventilation or high-flow oxygen devices)24 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 298 (Not hospitalized, no limitations on activities)0 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 295 (Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care)5 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 29Missing5 Participants
Lanadelumab + Standard of CareZilucoplan Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 291 (Death or discharged to hospice care)14 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 29Missing2 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 291 (Death or discharged to hospice care)18 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 292 (Hospitalized on invasive mechanical ventilation or ECMO)6 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 293 (Hospitalized on noninvasive ventilation or high-flow oxygen devices)12 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 294 (Hospitalized, requiring supplemental oxygen)29 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 295 (Hospitalized, not requiring supplemental oxygen, requiring ongoing medical care)7 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 296 (Hospitalized, not requiring supplemental oxygen, no longer requires ongoing medical care)0 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 297 (Not hospitalized, limitation on activities and/or requiring home oxygen)0 Participants
Lanadelumab Placebo ControlZilucoplan Sub-protocol: Worst Post-Baseline Score on Clinical Severity Status 8-Point Ordinal Scale From Baseline to Day 298 (Not hospitalized, no limitations on activities)1 Participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026