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Treatment of COVID-19 Patients With Anti-interleukin Drugs

A Prospective, Randomized, Factorial Design, Interventional Study to Compare the Safety and Efficacy of Combinations of Blockade of Interleukin-6 Pathway and Interleukin-1 Pathway to Best Standard of Care in Improving Oxygenation and Short- and Long-term Outcome of COVID-19 Patients With Acute Hypoxic Respiratory Failure and Systemic Cytokine Release Syndrome

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04330638
Acronym
COV-AID
Enrollment
342
Registered
2020-04-01
Start date
2020-04-03
Completion date
2021-05-21
Last updated
2023-03-14

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

Conditions

COVID-19

Keywords

Acute Lung Injury, Hypoxia, Acute Respiratory Distress Syndrome, Corona virus, COVID-19, SARS (Severe Acute Respiratory Syndrome), Systemic Cytokine release Syndrome

Brief summary

The purpose of this study is to test the safety and effectiveness of individually or simultaneously blocking IL-6 and IL-1 versus standard of care on blood oxygenation and systemic cytokine release syndrome in patients with COVID-19 coronavirus infection and acute hypoxic respiratory failure and systemic cytokine release syndrome

Detailed description

There are currently no treatments directed at halting the cytokine storm and acute lung injury to stop the progression from manageable hypoxia to frank respiratory failure and ARDS in patients with COVID-19 infection. Preventing progression from early acute hypoxia and cytokine release syndrome to frank hypoxic respiratory failure and ARDS could have a huge impact on the foreseeable overflow of the ICU units. In ventilated patients, preventing the onset of ARDS, or shortening ICU stay could also be crucial in this regard. The clinical status after 15 days treatment is evaluated to measure the effectiveness of tocilizumab, tocilizumab and anakinra, siltuximab, siltuximab and anakinra and anakinra on restoring lung homeostasis,using single IV injection (siltuximab or tocilizumab) combined or not with daily subcutaneous injections of anakinra until 28 days or hospital discharge, whichever is first. During the treatment period, daily clinical assesments of severity, daily laboratory check-up, measurements of oxygen saturation (pulse oximetry) in relation to FiO2, regular arterial blood gas measurements, regular chest X-rays, chest CT scans on indication will be performed.

Interventions

OTHERUsual Care

Usual Care

DRUGAnakinra

Anakinra will be given as a daily subcutaneous injection of 100 mg for 28 days or until hospital discharge, whichever is first

DRUGSiltuximab

Siltuximab will be given via single IV infusion at a dose of 11 mg/kg

DRUGTocilizumab

Tocilizumab will be given via single IV infusion at a dose of 8 mg/kg with a maximum infusion of 800 mg/injection

Sponsors

Belgium Health Care Knowledge Centre
CollaboratorOTHER_GOV
University Hospital, Ghent
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
FACTORIAL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

* Recent ( ≥ 6 days of flu-like symptoms or malaise yet ≤16 days of flu-like symptoms or malaise prior to randomization) infection with COVID-19. * Confident COVID-19 diagnosis confirmed by antigen detection test and/or PCR and/or positive serology, or any emerging and validated diagnostic laboratory test for COVID-19 within this period. * In some patients, it may be impossible to get a confident laboratory confirmation of COVID-19 diagnosis after 24h of hospital admission because viral load is low and/or problems with diagnostic sensitivity. In those cases, in absence of an alternative diagnosis, and with highly suspect bilateral ground glass opacities on recent (\<24h) chest-CT scan (confirmed by a radiologist and pulmonary physician as probable COVID-19), and a typical clinical and chemical diagnosis with signs of cytokine release syndrome, a patient can be enrolled as probable COVID-19 infected. In all cases, this needs confirmation by later seroconversion. * Presence of hypoxia defined as PaO2/FiO2 below 350 while breathing room air in upright position or PaO2/FiO2 below 280 on supplemental oxygen and immediately requiring high flow oxygen device or mechanical ventilation * signs of cytokine release syndrome defined as ANY of the following: 1. serum ferritin concentration \>1000 mcg/L and rising since last 24h 2. single ferritin above 2000 mcg/L in patients requiring immediate high flow oxygen device or mechanical ventilation 3. lymphopenia defined as \<800 lymphocytes/microliter) and two of the following extra criteria * Ferritin \> 700 mcg/L and rising since last 24h * increased LDH (above 300 IU/L) and rising last 24h * D-Dimers \> 1000 ng/mL and rising since last 24h * CRP above 70mg/L and rising since last 24h and absence of bacterial infection * if three of the above are present at admission, no need to document 24h rise * Chest X-ray or CT scan showing bilateral infiltrates within last 2 days * Admitted to specialized COVID-19 ward or an ICU ward taking care of COVID-19 patients * Age ≥ 18yrs * Male or Female * Willing and able to provide informed consent or legal representative willing to provide informed consent

Exclusion criteria

* Patients with known history of serious allergic reactions, including anaphylaxis, to any of the study medications, or any component of the product. * mechanical ventilation \> 24 h at Randomization * Patient on ECMO at time of screening * clinical frailty scale above 3 (This frailty score is the patient status before first symptoms of COVID-19 episode.) * active bacterial or fungal infection * unlikely to survive beyond 48h * neutrophil count below 1500 cells/microliter * platelets below 50.000/microliter * Patients enrolled in another investigational drug study * patients on high dose systemic steroids (\> 20 mg methylprednisolone or equivalent) for COVID-19 unrelated disorder * patients on immunosuppressant or immunomodulatory drugs * patients on current anti-IL1 or anti-IL6 treatment * signs of active tuberculosis * serum transaminase levels \>5 times upper limit of normal * bowel perforation or diverticulitis * pregnant or breastfeeding females (all female subjects deemed of childbearing potential by the investigator must have negative pregnancy test at screening) * Women of childbearing potential must have a negative serum pregnancy test pre-dose on day 1. Woùmen of childbearing potential must consistently and correctly use (during the entire treatment period and 3 months after last reatment) 1 highly effective method for contraception.

Design outcomes

Primary

MeasureTime frameDescription
Time to Clinical Improvementat day 15Time to Clinical Improvement is defined as the time from randomization to either an increase of at least two points on a six category ordinal scale from the status at randomization or live discharge from the hospital.The 6-point ordinal scale for clinical improvement is defined as 1 = Death; 2 = Hospitalized, on invasive mechanical ventilation or ECMO; 3 = Hospitalized, on non-invasive ventilation or high flow oxygen devices; 4 = Hospitalized, requiring supplemental oxygen; 5 = Hospitalized, not requiring supplemental oxygen; 6 = Not hospitalized. A higher score represent a better outcome

Secondary

MeasureTime frameDescription
Time Until Independence From Supplemental Oxygen or Dischargeduring hospital admission (up to 28 days)
Time Until Independence From Invasive Ventilationduring hospital admission (up to 54 days)
Number of Days in ICUduring hospital admission (up to 28 days)
Number of Days in ICU in Patients Ventilated at Day of Randomizationduring hospital admission (up to 28 days)
Number of Days Without Supplemental Oxygen Useduring hospital admission (up to 28 days)
Number of Invasive Ventilator Daysduring hospital admission (up to 28 days)
Time Untill Dischargeduring hospital admission (up to 28 days)
Number of Invasive Ventilator-free Daysduring hospital admission (up to 28 days)
Number of Invasive Ventilator-free Days in Patients Ventilated at Day of Randomizationduring hospital admission (up to 28 days)
Percentage of Days in ICUfirst 28 days after randomizationNumber of days the participants were ventilated, relative to the number of days participants were alive during the first 28 days after randomization. This was calculated as the number of days with need for invasive ventilation / number of days alive during first 28 days, multiplied by 100 (to obtain a percentage).
Percentage of Invasive Ventilator Daysthe first 28 days after randomizationNumber of days the participant spent in the ICU, relative to the number of days the patient was alive during the first 28 days after randomization. This was calculated as the number of days in ICU during first 28 days / number of days alive during first 28 days, multiplied by 100 (to obtain a percentage).
Time Until First Use of High-flow Oxygen Device, Ventilation, or Deathduring hospital admission (up to 28 days)
Number of Invasive Ventilator Days in Patients Ventilated at Day of Randomizationduring hospital admission (up to 28 days)

Countries

Belgium

Participant flow

Recruitment details

Between April 4th and December 6th, 2020, 342 patients were randomized. In the first randomization, 230 patients were assigned to the no IL-1 blockade group and 112 to the IL-1 blockade group, of which all received at least one dose of anakinra. In the second randomization, 115 patients were assigned to the no IL-6 blockade group, and 227 to the IL-6 blockade group, of which 114 were allocated to receive tocilizumab and 113 siltuximab.

Pre-assignment details

111 received siltuximab at day 1, 2 received no siltuximab due to withdrawal of consent. 113 received tocilizumab at day 1, 1 was not administered for unknown reason.

Participants by arm

ArmCount
Blockade
Patients receiving Anakinra, patients receiving Siltuximab, patients receiving Tocilizumab, patients receiving Anakinra and Siltuximab, patients receiving Anakinra and Tocilizumab
339
No Blockade
Participants receiving no IL1 blockade + participants receiving no IL6 blockade
345
Total684

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003FG004FG005
Overall StudyAdverse Event910156105
Overall StudyLost to Follow-up323230
Overall StudyOther225132
Overall StudyWithdrawal by Subject400000

Baseline characteristics

CharacteristicTotalBlockadeNo Blockade
6-category ordinal scale for clinical improvement at day of randomization
IL-1: Hospitalized, not requiring supplemental oxygen (5)
6 Participants1 Participants5 Participants
6-category ordinal scale for clinical improvement at day of randomization
IL-1: Hospitalized, on invasive mechanical ventilation (2)
36 Participants14 Participants22 Participants
6-category ordinal scale for clinical improvement at day of randomization
IL-1: Hospitalized, on non-invasive ventilation or high flow oxygen devices (3)
128 Participants44 Participants84 Participants
6-category ordinal scale for clinical improvement at day of randomization
IL-1: Hospitalized, requiring supplemental oxygen (4)
169 Participants50 Participants119 Participants
6-category ordinal scale for clinical improvement at day of randomization
IL-6: Hospitalized, not requiring supplemental oxygen (5)
6 Participants5 Participants1 Participants
6-category ordinal scale for clinical improvement at day of randomization
IL-6: Hospitalized, on invasive mechanical ventilation (2)
39 Participants22 Participants17 Participants
6-category ordinal scale for clinical improvement at day of randomization
IL-6: Hospitalized, on non-invasive ventilation or high flow oxygen devices (3)
128 Participants89 Participants39 Participants
6-category ordinal scale for clinical improvement at day of randomization
IL-6: Hospitalized, requiring supplemental oxygen (4)
169 Participants111 Participants58 Participants
Age, Continuous
IL-1
65 years67 years64 years
Age, Continuous
IL-6
65 years65 years64 years
Body Mass Index (BMI)
IL-1
28 kg/m^228 kg/m^228 kg/m^2
Body Mass Index (BMI)
IL-6
28 kg/m^228 kg/m^228 kg/m^2
Co-existing conditions
IL-1: Arterial hypertension
161 Participants57 Participants104 Participants
Co-existing conditions
IL-1: Cardiovascular disease
70 Participants29 Participants41 Participants
Co-existing conditions
IL-1: Chronic kidney disease
37 Participants14 Participants23 Participants
Co-existing conditions
IL-1 Diabetes mellitus
95 Participants37 Participants58 Participants
Co-existing conditions
IL-6: Arterial hypertension
161 Participants115 Participants46 Participants
Co-existing conditions
IL-6: Cardiovascular disease
70 Participants46 Participants24 Participants
Co-existing conditions
IL-6: Chronic kidney disease
37 Participants25 Participants12 Participants
Co-existing conditions
IL-6 Diabetes mellitus
95 Participants59 Participants36 Participants
Concommitant medication at day of randomization
IL-1: Antibiotics
158 Participants58 Participants100 Participants
Concommitant medication at day of randomization
IL-1: Glucocorticoids
213 Participants72 Participants141 Participants
Concommitant medication at day of randomization
IL-1: Hydroxychloroquine
40 Participants18 Participants22 Participants
Concommitant medication at day of randomization
IL-1: Remdesivir
17 Participants6 Participants11 Participants
Concommitant medication at day of randomization
IL-6: Antibiotics
158 Participants103 Participants55 Participants
Concommitant medication at day of randomization
IL-6: Glucocorticoids
213 Participants141 Participants72 Participants
Concommitant medication at day of randomization
IL-6: Hydroxychloroquine
40 Participants25 Participants15 Participants
Concommitant medication at day of randomization
IL-6: Remdesivir
17 Participants11 Participants6 Participants
CRP at day of randomization
IL-1
129 mg/mL148 mg/mL123 mg/mL
CRP at day of randomization
IL-6
129 mg/mL129 mg/mL129 mg/mL
days of hospitalization at randomization
IL-1
2 days3 days2 days
days of hospitalization at randomization
IL-6
2 days3 days2 days
Days of symptoms at randomization
IL-1
10 days10 days10 days
Days of symptoms at randomization
IL-6
10 days10 days10 days
D-dimers at day of randomization
IL-1
1011 ng/mL1091 ng/mL1000 ng/mL
D-dimers at day of randomization
IL-6
1011 ng/mL1000 ng/mL1099 ng/mL
Ferritin at day of randomization
IL-1
1687 µg/L1672 µg/L1688 µg/L
Ferritin at day of randomization
IL-6
1687 µg/L1680 µg/L1749 µg/L
ICU at day of randomization
IL-1
172 Participants60 Participants112 Participants
ICU at day of randomization
IL-6
172 Participants113 Participants59 Participants
IL-1B at day of randomization
IL-1
56 fg/mL44 fg/mL60 fg/mL
IL-1B at day of randomization
IL-6
56 fg/mL52 fg/mL74 fg/mL
IL-1-RA at day of randomization
IL-1
916 ng/mL940 ng/mL903 ng/mL
IL-1-RA at day of randomization
IL-6
916 ng/mL931 ng/mL885 ng/mL
IL-6 at day of randomization
IL-1
9 pg/mL8 pg/mL10 pg/mL
IL-6 at day of randomization
IL-6
9 pg/mL9 pg/mL8 pg/mL
LDH at day of randomization
IL-1
435 IU/L445 IU/L430 IU/L
LDH at day of randomization
IL-6
435 IU/L435 IU/L435 IU/L
Lymphocyte count at day of randomization
IL-1
0.7 10^3 cells /µL0.7 10^3 cells /µL0.7 10^3 cells /µL
Lymphocyte count at day of randomization
IL-6
0.7 10^3 cells /µL0.6 10^3 cells /µL0.7 10^3 cells /µL
PaO2/FiO2 ratio at day of randomization
IL-1
150 ratio135 ratio154 ratio
PaO2/FiO2 ratio at day of randomization
IL-6
150 ratio155 ratio144 ratio
Race/Ethnicity, Customized
IL-1: Asian
7 Participants1 Participants6 Participants
Race/Ethnicity, Customized
IL-1:Black
9 Participants1 Participants8 Participants
Race/Ethnicity, Customized
IL-1: Middle Eastern-Arabian
40 Participants11 Participants29 Participants
Race/Ethnicity, Customized
IL-1 : Other
8 Participants1 Participants7 Participants
Race/Ethnicity, Customized
IL-1 : white
278 Participants98 Participants180 Participants
Race/Ethnicity, Customized
IL-6: Asian
7 Participants4 Participants3 Participants
Race/Ethnicity, Customized
IL-6: Black
9 Participants8 Participants1 Participants
Race/Ethnicity, Customized
IL-6 : Middle Eastern-Arabian
40 Participants27 Participants13 Participants
Race/Ethnicity, Customized
IL-6: Other
8 Participants4 Participants4 Participants
Race/Ethnicity, Customized
IL-6 : white
278 Participants184 Participants94 Participants
Sex/Gender, Customized
IL-1: Female
77 Participants25 Participants52 Participants
Sex/Gender, Customized
IL-1: Male
265 Participants87 Participants178 Participants
Sex/Gender, Customized
IL-6: Female
77 Participants52 Participants25 Participants
Sex/Gender, Customized
IL-6: Male
265 Participants175 Participants90 Participants
Smoking
IL-1: Current
18 Participants7 Participants11 Participants
Smoking
IL-1: Former
101 Participants34 Participants67 Participants
Smoking
IL-1:No
162 Participants54 Participants108 Participants
Smoking
IL-6: Current
18 Participants15 Participants3 Participants
Smoking
IL-6: Former
101 Participants65 Participants36 Participants
Smoking
IL-6: No
162 Participants101 Participants61 Participants
SOFA score at day of randomization
IL-1
3 units on a scale3 units on a scale3 units on a scale
SOFA score at day of randomization
IL-6
3 units on a scale3 units on a scale3 units on a scale
Vasopressor use at day of randomization
IL-1
21 Participants10 Participants11 Participants
Vasopressor use at day of randomization
IL-6
21 Participants12 Participants9 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
9 / 7410 / 4415 / 756 / 3610 / 815 / 32
other
Total, other adverse events
37 / 7425 / 4415 / 7517 / 3635 / 8117 / 32
serious
Total, serious adverse events
14 / 7412 / 4421 / 758 / 3615 / 819 / 32

Outcome results

Primary

Time to Clinical Improvement

Time to Clinical Improvement is defined as the time from randomization to either an increase of at least two points on a six category ordinal scale from the status at randomization or live discharge from the hospital.The 6-point ordinal scale for clinical improvement is defined as 1 = Death; 2 = Hospitalized, on invasive mechanical ventilation or ECMO; 3 = Hospitalized, on non-invasive ventilation or high flow oxygen devices; 4 = Hospitalized, requiring supplemental oxygen; 5 = Hospitalized, not requiring supplemental oxygen; 6 = Not hospitalized. A higher score represent a better outcome

Time frame: at day 15

Population: Participants were re-grouped and analyzed based on the following pre-specified factorial combinations: IL-1 Blockade, No IL-1 Blockade, IL-6 Blockade, No IL-6 Blockade

ArmMeasureValue (MEDIAN)
IL 1 BlockadeTime to Clinical Improvement12 days
No IL-1 BlockadeTime to Clinical Improvement12 days
IL-6 BlockadeTime to Clinical Improvement11 days
No IL-6 BlockadeTime to Clinical Improvement12 days
Secondary

Number of Days in ICU

Time frame: during hospital admission (up to 28 days)

Population: Participants were re-grouped and analyzed based on the following pre-specified factorial combinations: IL-1 Blockade, No IL-1 Blockade, IL-6 Blockade, No IL-6 Blockade

ArmMeasureValue (MEDIAN)
IL 1 BlockadeNumber of Days in ICU11 days
No IL-1 BlockadeNumber of Days in ICU10 days
IL-6 BlockadeNumber of Days in ICU11 days
No IL-6 BlockadeNumber of Days in ICU10 days
Secondary

Number of Days in ICU in Patients Ventilated at Day of Randomization

Time frame: during hospital admission (up to 28 days)

Population: Participants were re-grouped and analyzed based on the following pre-specified factorial combinations: IL-1 Blockade, No IL-1 Blockade, IL-6 Blockade, No IL-6 Blockade

ArmMeasureValue (MEDIAN)
IL 1 BlockadeNumber of Days in ICU in Patients Ventilated at Day of Randomization20 days
No IL-1 BlockadeNumber of Days in ICU in Patients Ventilated at Day of Randomization22 days
IL-6 BlockadeNumber of Days in ICU in Patients Ventilated at Day of Randomization20 days
No IL-6 BlockadeNumber of Days in ICU in Patients Ventilated at Day of Randomization22 days
Secondary

Number of Days Without Supplemental Oxygen Use

Time frame: during hospital admission (up to 28 days)

Population: Participants were re-grouped and analyzed based on the following pre-specified factorial combinations: IL-1 Blockade, No IL-1 Blockade, IL-6 Blockade, No IL-6 Blockade

ArmMeasureValue (MEDIAN)
IL 1 BlockadeNumber of Days Without Supplemental Oxygen Use9 days
No IL-1 BlockadeNumber of Days Without Supplemental Oxygen Use9 days
IL-6 BlockadeNumber of Days Without Supplemental Oxygen Use10 days
No IL-6 BlockadeNumber of Days Without Supplemental Oxygen Use8 days
Secondary

Number of Invasive Ventilator Days

Time frame: during hospital admission (up to 28 days)

Population: Participants were re-grouped and analyzed based on the following pre-specified factorial combinations: IL-1 Blockade, No IL-1 Blockade, IL-6 Blockade, No IL-6 Blockade

ArmMeasureValue (MEDIAN)
IL 1 BlockadeNumber of Invasive Ventilator Days5 days
No IL-1 BlockadeNumber of Invasive Ventilator Days5 days
IL-6 BlockadeNumber of Invasive Ventilator Days5 days
No IL-6 BlockadeNumber of Invasive Ventilator Days5 days
Secondary

Number of Invasive Ventilator Days in Patients Ventilated at Day of Randomization

Time frame: during hospital admission (up to 28 days)

Population: Participants were re-grouped and analyzed based on the following pre-specified factorial combinations: IL-1 Blockade, No IL-1 Blockade, IL-6 Blockade, No IL-6 Blockade

ArmMeasureValue (MEDIAN)
IL 1 BlockadeNumber of Invasive Ventilator Days in Patients Ventilated at Day of Randomization15 days
No IL-1 BlockadeNumber of Invasive Ventilator Days in Patients Ventilated at Day of Randomization16 days
IL-6 BlockadeNumber of Invasive Ventilator Days in Patients Ventilated at Day of Randomization15 days
No IL-6 BlockadeNumber of Invasive Ventilator Days in Patients Ventilated at Day of Randomization16 days
Secondary

Number of Invasive Ventilator-free Days

Time frame: during hospital admission (up to 28 days)

Population: Participants were re-grouped and analyzed based on the following pre-specified factorial combinations: IL-1 Blockade, No IL-1 Blockade, IL-6 Blockade, No IL-6 Blockade

ArmMeasureValue (MEDIAN)
IL 1 BlockadeNumber of Invasive Ventilator-free Days18 days
No IL-1 BlockadeNumber of Invasive Ventilator-free Days18 days
IL-6 BlockadeNumber of Invasive Ventilator-free Days18 days
No IL-6 BlockadeNumber of Invasive Ventilator-free Days17 days
Secondary

Number of Invasive Ventilator-free Days in Patients Ventilated at Day of Randomization

Time frame: during hospital admission (up to 28 days)

Population: Participants were re-grouped and analyzed based on the following pre-specified factorial combinations: IL-1 Blockade, No IL-1 Blockade, IL-6 Blockade, No IL-6 Blockade

ArmMeasureValue (MEDIAN)
IL 1 BlockadeNumber of Invasive Ventilator-free Days in Patients Ventilated at Day of Randomization6 days
No IL-1 BlockadeNumber of Invasive Ventilator-free Days in Patients Ventilated at Day of Randomization6 days
IL-6 BlockadeNumber of Invasive Ventilator-free Days in Patients Ventilated at Day of Randomization7 days
No IL-6 BlockadeNumber of Invasive Ventilator-free Days in Patients Ventilated at Day of Randomization5 days
Secondary

Percentage of Days in ICU

Number of days the participants were ventilated, relative to the number of days participants were alive during the first 28 days after randomization. This was calculated as the number of days with need for invasive ventilation / number of days alive during first 28 days, multiplied by 100 (to obtain a percentage).

Time frame: first 28 days after randomization

Population: Participants were re-grouped and analyzed based on the following pre-specified factorial combinations: IL-1 Blockade, No IL-1 Blockade, IL-6 Blockade, No IL-6 Blockade

ArmMeasureValue (MEDIAN)
IL 1 BlockadePercentage of Days in ICU42 percentage of days
No IL-1 BlockadePercentage of Days in ICU36 percentage of days
IL-6 BlockadePercentage of Days in ICU38 percentage of days
No IL-6 BlockadePercentage of Days in ICU40 percentage of days
Secondary

Percentage of Invasive Ventilator Days

Number of days the participant spent in the ICU, relative to the number of days the patient was alive during the first 28 days after randomization. This was calculated as the number of days in ICU during first 28 days / number of days alive during first 28 days, multiplied by 100 (to obtain a percentage).

Time frame: the first 28 days after randomization

Population: Participants were re-grouped and analyzed based on the following pre-specified factorial combinations: IL-1 Blockade, No IL-1 Blockade, IL-6 Blockade, No IL-6 Blockade

ArmMeasureValue (MEDIAN)
IL 1 BlockadePercentage of Invasive Ventilator Days23 percentage of days
No IL-1 BlockadePercentage of Invasive Ventilator Days21 percentage of days
IL-6 BlockadePercentage of Invasive Ventilator Days21 percentage of days
No IL-6 BlockadePercentage of Invasive Ventilator Days23 percentage of days
Secondary

Time Until First Use of High-flow Oxygen Device, Ventilation, or Death

Time frame: during hospital admission (up to 28 days)

Population: Participants were re-grouped and analyzed based on the following pre-specified factorial combinations: IL-1 Blockade, No IL-1 Blockade, IL-6 Blockade, No IL-6 Blockade

ArmMeasureValue (MEDIAN)
IL 1 BlockadeTime Until First Use of High-flow Oxygen Device, Ventilation, or DeathNA days
No IL-1 BlockadeTime Until First Use of High-flow Oxygen Device, Ventilation, or DeathNA days
IL-6 BlockadeTime Until First Use of High-flow Oxygen Device, Ventilation, or DeathNA days
No IL-6 BlockadeTime Until First Use of High-flow Oxygen Device, Ventilation, or DeathNA days
Secondary

Time Until Independence From Invasive Ventilation

Time frame: during hospital admission (up to 54 days)

Population: Participants were re-grouped and analyzed based on the following pre-specified factorial combinations: IL-1 Blockade, No IL-1 Blockade, IL-6 Blockade, No IL-6 Blockade

ArmMeasureValue (MEDIAN)
IL 1 BlockadeTime Until Independence From Invasive Ventilation21 days
No IL-1 BlockadeTime Until Independence From Invasive Ventilation27 days
IL-6 BlockadeTime Until Independence From Invasive Ventilation23 days
No IL-6 BlockadeTime Until Independence From Invasive Ventilation54 days
Secondary

Time Until Independence From Supplemental Oxygen or Discharge

Time frame: during hospital admission (up to 28 days)

Population: Participants were re-grouped and analyzed based on the following pre-specified factorial combinations: IL-1 Blockade, No IL-1 Blockade, IL-6 Blockade, No IL-6 Blockade

ArmMeasureValue (MEDIAN)
IL 1 BlockadeTime Until Independence From Supplemental Oxygen or Discharge12 days
No IL-1 BlockadeTime Until Independence From Supplemental Oxygen or Discharge12 days
IL-6 BlockadeTime Until Independence From Supplemental Oxygen or Discharge11 days
No IL-6 BlockadeTime Until Independence From Supplemental Oxygen or Discharge12 days
Secondary

Time Untill Discharge

Time frame: during hospital admission (up to 28 days)

Population: Participants were re-grouped and analyzed based on the following pre-specified factorial combinations: IL-1 Blockade, No IL-1 Blockade, IL-6 Blockade, No IL-6 Blockade

ArmMeasureValue (MEDIAN)
IL 1 BlockadeTime Untill Discharge14 days
No IL-1 BlockadeTime Untill Discharge12 days
IL-6 BlockadeTime Untill Discharge12 days
No IL-6 BlockadeTime Untill Discharge13 days

Source: ClinicalTrials.gov · Data processed: Feb 27, 2026