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Double Blind, Placebo Controlled Study of Safety and Efficacy of Leronlimab in Patients With Long COVID-19

A Phase 2, Randomized, Double Blind, Placebo Controlled Study to Evaluate the Efficacy and Safety of Leronlimab in Patients Experiencing Prolonged Coronavirus Disease 2019 (COVID-19) Symptoms [Long-Haulers]

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04678830
Enrollment
56
Registered
2020-12-22
Start date
2021-03-01
Completion date
2021-07-08
Last updated
2024-04-11

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

Conditions

Coronavirus Disease 2019

Keywords

COVID-19

Brief summary

The purpose of this study is to assess the safety and efficacy of leronlimab (PRO 140) administered as weekly subcutaneous injections in subjects experiencing prolonged symptoms (\> 12 weeks) of COVID-19.

Detailed description

This is a Phase 2, two-arm, randomized, double blind, placebo controlled multicenter study to evaluate the safety and efficacy of leronlimab (PRO 140) in patients with prolonged symptoms caused by Coronavirus Disease 2019 (COVID-19). Patients will be randomized to receive weekly doses of 700 mg leronlimab (PRO 140), or placebo. Leronlimab (PRO 140) and placebo will be administered via subcutaneous injection. The study will have three phases: Screening Period, Treatment Period, and Follow-Up Period. Total study duration is 91 days. The study will be conducted at up to 5 centers in the United States and planned number of subjects are 50 subjects. Visit schedule: Visit 1 - Screening assessment Visit 2 - baseline, first dose Visit 3 - no dose, baseline+3 days Visit 4 - second dose, baseline + 7 days Visit 5 - no dose, safety assessment/con med, baseline +10 days Visit 6 - third dose, baselines + 14 days Visit 7 - no dose, safety assessments, baseline + 17 days Visit 8 - fourth dose, baseline +21 days Visit 9 - no dose, safety assessment, baseline + 24 days Visit 10 - fifth dose, baseline + 28 days Visit 11 - no dose, safety assessment, baseline + 31 days Visit 12 - sixth dose, baseline + 35 days Visit 13 - no dose, safety assessment, baseline + 38 days Visit 14 - seventh dose, baseline + 42 days Visit 15 - no dose, safety assessment, baseline + 45 days Visit 16 - eighth and final dose, baseline + 49 days Visit 17 - End of treatment, baseline + 56 days

Interventions

DRUGPlacebos

Placebos

Leronlimab (PRO) 140 is a humanized IgG4, monoclonal antibody (mAb) to the C-C chemokine receptor type 5 (CCR5)

Sponsors

Amarex Clinical Research
CollaboratorOTHER
CytoDyn, Inc.
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

1. Male or female adult ≥ 18 years of age at time of enrollment. 2. Prior confirmed COVID-19 diagnosis by standard reverse transcriptase-polymerase chain reaction (RT-PCR) assay or equivalent testing 3. Clinical Symptom Score of ≥6 AND at least two symptoms of moderate or higher severity as listed below at the time of Screening and currently experiencing two or more of the following symptoms consistent with COVID-19 infection for a prolonged period of time (\>12 weeks). Clinical symptoms include the following: * Respiratory symptoms such as cough, sore throat, stuffy or runny nose, shortness of breath (difficulty breathing), tightness of chest. * Neurological symptoms such as difficulty in concentration (brain fog), sleep disturbance/insomnia, headache, dizziness, anxiety, tingling or numbness, loss of sense of smell or taste. * Cardiovascular and Gastrointestinal symptoms such as feeling of fast heartbeat, nausea, vomiting, diarrhea. * Musculoskeletal symptoms such as muscle aches/cramps, muscle weakness, joint pain/swelling. * General immune response symptoms such as fatigue (low energy or tiredness), chills or shivering, feeling hot or feverish, or exertional malaise (feeling of discomfort, illness, or lack of well-being after physical activity or mental stress). Note: Clinical Symptom Score is obtained from the patient diary (refer to Appendix 1 for scoring instructions). 4. Electrocardiogram (ECG) with no clinically significant findings as assessed by the Investigator. Note: Below are the examples of clinically significant and non-clinically significant ECG abnormalities: * ECG findings indicative of acute myocardial infarction or acute ischemic changes would be considered clinically significant abnormalities. * ECG finding such as atrial fibrillation, atrial flutter, paced rhythms in individuals who have undergone permanent pacemaker placement, evidence of prior infarction, unchanged stable conduction abnormalities e.g. right bundle branch block, or any other finding which does not significantly impact mortality would be considered non-clinically significant findings and subjects with these abnormal findings would be allowed to enroll in the study. 5. Subject (or legally authorized representative) provides written informed consent prior to initiation of any study procedures. 6. Men and women of childbearing potential and their partner must agree to use two medically accepted methods of contraception (e.g., barrier contraceptives \[male condom, female condom, or diaphragm with a spermicidal gel\], hormonal contraceptives \[implants, injectables, combination oral contraceptives, transdermal patches, or contraceptive rings\], or one of the following methods of birth control (intrauterine devices, bilateral tubal occlusion, or vasectomy) or must practice complete sexual abstinence for the duration of the study (excluding women who are not of childbearing potential and men who have been sterilized). 7. Females of child-bearing potential must have a negative urine pregnancy test at Screening Visit and prior to receiving the first dose of study drug; and Male participants must agree to use contraception and refrain from donating sperm for at least 90 days after the last dose of study intervention. 8. Subject is willing and able to comply with scheduled visits, drug administration plan, laboratory tests, other study procedures and study restrictions

Exclusion criteria

1. Exhibiting signs of moderate or severe pulmonary disease (such as Chronic Obstructive Pulmonary Disease (COPD), asthma, or pulmonary fibrosis) 2. Ongoing requirement of oxygen therapy 3. Pulse oxygen saturation (SpO2) of \<94% on room air at the time of screening 4. History of splenectomy 5. Liver cirrhosis or patient showing signs of clinical jaundice at the time of screening 6. Chronic kidney disease stage 4 or requiring dialysis at the time of screening 7. New York Heart Association (NYHA) Class III or IV congestive heart failure (CHF) 8. Exhibiting signs of uncontrolled hypo-or hyper- thyroidism at the time of Screening 9. Uncontrolled rheumatologic disorders at the time of screening 10. History of organ transplantation or are candidates for organ transplantation at the time of screening 11. History of Chronic Fatigue Syndrome prior to COVID-19 infection 12. History of fibromyalgia prior to COVID-19 infection 13. History of major psychiatric disorder including bipolar disorders, schizophrenia, schizoaffective disorder, major depression. Patients with major depression can be enrolled if patient has had no episode within the past year or is considered in remission or controlled by treatment. 14. Any malignancy within the past 5 years, excluding successfully treated basal cell carcinoma or squamous cell carcinoma without evidence of metastases. 15. Any other clinically significant serious systemic diseases which would interfere with study conduct or study results interpretation per the Investigator. 16. Treatment with immunosuppressive or immunomodulatory medications within 5 half-lives prior to screening. Patients on replacement therapy for adrenal insufficiency will be allowed. Patients on stable (\> 3 months) low dose corticosteroid ≤ 5 mg Prednisone will be allowed. 17. History of allergic reactions attributed to compounds of similar chemical or biologic composition to leronlimab (PRO 140) are not eligible 18. Ongoing use of CCR5 antagonist 19. Inability to provide informed consent or to comply with test requirements 20. Consideration by the investigator, for safety reasons, that the subject is an unsuitable candidate to receive study treatment 21. Pregnancy or breast feeding 22. Participating in another study for an investigational treatment

Design outcomes

Primary

MeasureTime frameDescription
Changes From Baseline in Daily COVID-19-related Symptom Severity Score Through Day 56.Changes in COVID-19 related symptoms from baseline (start of treatment) and day 56 (end of treatment)Changes in common COVID-19-related symptoms were evaluated daily by the patient using a patient diary between start and end of treatment. The diary is shown in Appendix 17.1 in the protocol and covers patient-reported changes for symptoms (ranked as none = 0, mild = 1, moderate = 2 or severe = 3) of cough, sore throat, stuffy or runny nose, difficulty breathing, feeling tightness in chest, feeling fast heartbeat, fatigue, exertional malaise, muscle aches and cramps, muscle weakness, joint pain and swelling, shivering and chills, feeling hot or feverish, difficulty concentrating, insomnia, headache, dizziness, anxiety, tingling or numbness, nausea, vomiting, diarrhea, sense of smell, sense of taste. Maximum score could be 70 (22 parameters with scores up to 3, two parameters with scores up to 2), lowest score could be 0. A negative value shows improvement in symptoms. The lower the value, the greater the improvement (i.e., a score of -16 is greater improvement than a score of -8).

Secondary

MeasureTime frameDescription
Number of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Between start of treatment (day0) and day 56 (end of treatment)Symptom-free days are defined as number of days when any symptoms scored as mild, moderate or severe at baseline are scored as absent (or none) through Day 56 (end of treatment) using a self-assessment diary.
Progression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Between start of treatment (day0) and day 56 (end of treatment)Progression or worsening of symptoms is defined as number of days when any symptoms scored as 2 at baseline scored as 3 through day 56 or 1 at baseline are scored as 2 or 3 through day 56 or scored 0 at study entry scored as 1, 2 or 3 through day 56. No change in symptoms would give a score of 0, symptom progression would give a positive number, symptom improvement would a negative number. Minimum baseline symptom score for eligibility for the study was 6. Maximum symptom score is 70, therefore if all symptoms progressed to the severest level the change in score would be +64. If all patients had a severe score for all symptoms at baseline and all improved to no symptoms at day 56, the maximum improvement in score would be -70.
Change From Baseline in PROMIS® Fatigue Score at Days 7,14, 21, 28, 35, 42 and End of Treatment (Day 56).Between Baseline (day 0), Visit 4 (day 7), Visit 6 (day 14), Visit 8 (day 21) Visit 10 (day 28), Visit 12 (day 35), Visit 14 (day 42), Visit 16 (Day 56) and Visit 17 (day 56, end of treatment).Change from baseline in physical and psychological fatigue measured using the PROMIS® scale. A decrease in the score compared to baseline shows an improvement in the symptom. PROMIS definition - Patient-Reported Outcomes Measurement Information System. The Fatigue Short Form (4a) was used (Section 17.3 Appendix 3 of protocol). Raw fatigue scores range from 4 to 20 and are converted to a T-score metric where the response from the general population is set at 50 with standard deviations at 10; a score of greater than 60 would be one std dev greater than the general population, meaning more fatigue. A link to the fatigue score maps is provided in the hyperlinks section. The minimum fatigue T-score is 33.7 (with a std error of 4.9) and a maximum score of 75.8 (with a std error of 3.9). The higher the score, the more fatigue. A decrease in the fatigue score from baseline to day 28 and day 56 would indicate decrease in fatigue.
Duration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration of symptoms from baseline (day 0, start of treatment) and day 56 (end of treatment)Number of days when any symptoms scored as moderate or severe at baseline (Day 0) are still scored as moderate or severe through day 56 (end of treatment) or symptoms scored as mild or absent at baseline are scored as mild or worse at day 56 (end of treatment).
Change From Baseline in PROMIS® Sleep Disturbance Score at Days 7,14, 21, 28, 35, 42, 49 and End of Treatment (Day 56).Between Baseline (day 0), Visit 4 (day 7), Visit 6 (day 14), Visit 8 (day 21) Visit 10 (day 28), Visit 12 (day 35), Visit 14 (day 42), Visit 16 (Day 56) and Visit 17 (day 56, end of treatment).Assessment of change in sleep disturbance between baseline, day 28 and day 56 used the PROMIS® Sleep Disturbance Short Form (see Appendix 5 in Section 17 of the protocol). Four questions are scored between 1 (best score for good quality sleep) and 5 (worst score) such that the lower the score, the better the sleep. Raw scores are converted to a T-score with a mean of 50 and a standard deviation (SD) of 10 for the general population. T-scores of 60 are one SD worse than average (worse quality sleep). By comparison, Sleep Disturbance T-scores of 40 are one SD better than average. The PROMIS Sleep Disturbance scoring manual shows the lowest sleep disturbance score of 4 converting to a T score of 32 with a std error of 5.2, while the highest score of 20 converts to a T score of 73.3 with a std error of 4.6. The change from baseline is based on patients with paired values.
Number of Participants Requiring Hospitalization During the Treatment PhaseBetween baseline (start of treatment) and day 56 (end of treatment)Number of participants who required hospitalization during the treatment phase.
Duration (Days) of Hospitalization During the Treatment PhaseBetween baseline (start of treatment) and day 56 (end of treatment)Duration (in days) of hospitalization required during treatment phase
Change From Baseline in PROMIS® Cognitive Function Score at Days 7, 14, 21, 28, 35, 42, 49 and End of Treatment (d56)Baseline (start of treatment), day 28 and day 56 (end of treatment)Change in cognitive function score between baseline, day 28 and day 56 were measured using the PROMIS Cognitive Function Assessment Short Form 4a. Higher scores on the PROMIS Cognitive Function Assessment indicate better perceived cognitive functioning. Answers to 4 questions with scores ranging from 1 (very often - several times a day) to 5 (never) provide raw scores that are then normalized T scores. A T score of 50 is the mean of the general population, with std devs of 10, therefore a score of 40 is one std dev lower than that of the general population. The lowest raw score (4) converts to a T score of 24.99 while the highest raw score (20) converts to a T score of 61.13. A link to the PROMIS scoring maps is provided in the hyperlinks section. An increase in score for cognitive function assessment represents an increase in cognitive function

Other

MeasureTime frameDescription
Incidence of Treatment-related Adverse Events (TEAEs)Between baseline and day 91Safety Measurement - incidence of treatment emergent adverse events
Incidence and Severity of Treatment-emergent Adverse Events (TEAEs)Between baseline and day 91Safety Measures - Incidence and severity of treatment-emergent adverse events
Incidence of Serious Adverse Events (SAEs)Between baseline and day 91Safety Measures - incidence of severe adverse events
Changes in Electrocardiogram (ECG) ResultsChange between baseline and day 91Safety Measures - changes in electrocardiogram results
Changes in Blood Chemistry, Hematology and Coagulation Parameter ResultsBetween baseline and day 91Safety Measures - Changes in blood chemistry, hematology and coagulation parameter results
Changes in Physical Examination ResultsBetween baseline and day 91Safety Measures - Changes in physical examination results
Incidence of TEAEs and SAEs Leading to Discontinuation of Study Medication.Between baseline and day 56Safety Measures - incidence of TEAEs and SAEs leading to discontinuation of study medication
Changes in Vital Signs Including Temperature, Pulse, Respiratory Rate, Systolic and Diastolic Blood PressureBetween baseline and day 91Safety Measures - Changes in vital signs including temperature, pulse, respiratory rate, systolic and diastolic blood pressure
Change From Baseline in Pulse Oxygen Saturation (SpO2) at Day 7, 14, 21, 28, 35, 42, 49, and 56Change between baseline (start of treatment) and Day 7, 14, 21, 28, 35, 42, 49, and 56 (end of treatment).Exploratory Outcome - Change from baseline in pulse oxygen saturation (SpO2) at Day 7, 14, 21, 28, 35, 42, 49, and 56
Change From Baseline in Serum Cytokine and Chemokine Levels on Days 28 and 56.Change between baseline (start of treatment) and days 28 and 56 (end of treatment)Exploratory Outcome - Change from baseline in serum cytokine and chemokine levels
Change From Baseline in CD4+ and CD8+ T Cell Count on Days 28 and 56.Change between baseline (start of treatment) and days 28 and 56 (end of treatment)Exploratory Outcome - Change from baseline in CD4+ and CD8+ T cell count
Change From Baseline in Transforming Growth Factor Beta 1 (TGF beta1) on Days 28 and 56Change between baseline (start of treatment) and days 28 and 56 (end of treatment)Exploratory Outcome - change in TGF-b1 from baseline to days 28 and 56 (end of treatment)
Change From Baseline in C-reactive Protein (CRP) on Days 28 and 56Change between baseline (start of treatment) and days 28 and 56 (end of treatment)Exploratory Outcome - Change in C-reactive Protein (CRP) from baseline to Days 28 and 56 (end of treatment)
Change From Baseline in CCR5 Receptor Occupancy on Days 28 and 56.Change between baseline (start of treatment) and days 28 and 56 (end of treatment)Exploratory Outcome - Change in CCR5 receptor occupancy from baseline and days 28 and 56 (end of treatment)
Exploration of Biomarkers That May Predict and/or Act as Pharmacodynamic Indicators of Pharmacologic Activity of Leronlimab.91 DaysExploratory Outcome - Exploration of biomarkers that may predict and/or act as pharmacodynamic indicators of pharmacologic activity of leronlimab.

Countries

United States

Participant flow

Recruitment details

Fifty six (56) subjects were enrolled in the study with 28 subjects in each treatment arm. All patients were enrolled under protocol version 3.0 (effective date 25-Feb-2021). The study was performed between 01 March 2021 and 01 July 2021.

Participants by arm

ArmCount
700mg Leronlimab
Each vial of active contains 350mg of leronlimab at a concentration of 175mg/ml (nominal 2mL fill volume) in formulation buffer containing histidine, glycine, sodium chloride, sorbitol, polysorbate 20 and sterile water for injections Leronlimab (700mg): Leronlimab (PRO) 140 is a humanized IgG4, monoclonal antibody (mAb) to the C-C chemokine receptor type 5 (CCR5)
28
Placebo
Syringes containing normal saline for injection were prepared by an unblinded pharmacist at the clinical sites for use as the placebo. Placebos: Placebos
28
Total56

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyLack of Efficacy20
Overall StudyWithdrawal by Subject01

Baseline characteristics

Characteristic700mg LeronlimabPlaceboTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
2 Participants5 Participants7 Participants
Age, Categorical
Between 18 and 65 years
26 Participants23 Participants49 Participants
Age, Continuous45.5 years
STANDARD_DEVIATION 12.8
51.6 years
STANDARD_DEVIATION 13.2
48.6 years
STANDARD_DEVIATION 13.24
Baseline COVID-19 Related Symptom Score32.5 units on a scale
STANDARD_DEVIATION 9.96
26.9 units on a scale
STANDARD_DEVIATION 10.19
29.4 units on a scale
STANDARD_DEVIATION 10.64
Ethnicity (NIH/OMB)
Hispanic or Latino
3 Participants1 Participants4 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
25 Participants27 Participants52 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants1 Participants1 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
0 Participants0 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
28 Participants27 Participants55 Participants
Region of Enrollment
United States
28 participants28 participants56 participants
Sex: Female, Male
Female
18 Participants18 Participants36 Participants
Sex: Female, Male
Male
10 Participants10 Participants20 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 280 / 28
other
Total, other adverse events
22 / 2820 / 28
serious
Total, serious adverse events
0 / 281 / 28

Outcome results

Primary

Changes From Baseline in Daily COVID-19-related Symptom Severity Score Through Day 56.

Changes in common COVID-19-related symptoms were evaluated daily by the patient using a patient diary between start and end of treatment. The diary is shown in Appendix 17.1 in the protocol and covers patient-reported changes for symptoms (ranked as none = 0, mild = 1, moderate = 2 or severe = 3) of cough, sore throat, stuffy or runny nose, difficulty breathing, feeling tightness in chest, feeling fast heartbeat, fatigue, exertional malaise, muscle aches and cramps, muscle weakness, joint pain and swelling, shivering and chills, feeling hot or feverish, difficulty concentrating, insomnia, headache, dizziness, anxiety, tingling or numbness, nausea, vomiting, diarrhea, sense of smell, sense of taste. Maximum score could be 70 (22 parameters with scores up to 3, two parameters with scores up to 2), lowest score could be 0. A negative value shows improvement in symptoms. The lower the value, the greater the improvement (i.e., a score of -16 is greater improvement than a score of -8).

Time frame: Changes in COVID-19 related symptoms from baseline (start of treatment) and day 56 (end of treatment)

Population: The Modified Intent-to-Treat (mITT) population was defined as the set of subjects who received at least one dose of leronlimab (PRO 140) or placebo. This population was to be used for the analysis of efficacy parameters or measurements. Fifty six (56) patients received at least one dose of leronlimab or placebo.

ArmMeasureValue (MEAN)Dispersion
700mg LeronlimabChanges From Baseline in Daily COVID-19-related Symptom Severity Score Through Day 56.-16.3 units on a scaleStandard Deviation 13.14
PlaceboChanges From Baseline in Daily COVID-19-related Symptom Severity Score Through Day 56.-8.1 units on a scaleStandard Deviation 12.27
Secondary

Change From Baseline in PROMIS® Cognitive Function Score at Days 7, 14, 21, 28, 35, 42, 49 and End of Treatment (d56)

Change in cognitive function score between baseline, day 28 and day 56 were measured using the PROMIS Cognitive Function Assessment Short Form 4a. Higher scores on the PROMIS Cognitive Function Assessment indicate better perceived cognitive functioning. Answers to 4 questions with scores ranging from 1 (very often - several times a day) to 5 (never) provide raw scores that are then normalized T scores. A T score of 50 is the mean of the general population, with std devs of 10, therefore a score of 40 is one std dev lower than that of the general population. The lowest raw score (4) converts to a T score of 24.99 while the highest raw score (20) converts to a T score of 61.13. A link to the PROMIS scoring maps is provided in the hyperlinks section. An increase in score for cognitive function assessment represents an increase in cognitive function

Time frame: Baseline (start of treatment), day 28 and day 56 (end of treatment)

Population: mITT

ArmMeasureGroupValue (MEAN)Dispersion
700mg LeronlimabChange From Baseline in PROMIS® Cognitive Function Score at Days 7, 14, 21, 28, 35, 42, 49 and End of Treatment (d56)Change from baseline to visit 4 (day 7)5.1 units on a scaleStandard Deviation 8.9
700mg LeronlimabChange From Baseline in PROMIS® Cognitive Function Score at Days 7, 14, 21, 28, 35, 42, 49 and End of Treatment (d56)Change from baseline to visit 12 (day 35)10.1 units on a scaleStandard Deviation 9.4
700mg LeronlimabChange From Baseline in PROMIS® Cognitive Function Score at Days 7, 14, 21, 28, 35, 42, 49 and End of Treatment (d56)Change from baseline to visit 8 (day 21)7.4 units on a scaleStandard Deviation 10
700mg LeronlimabChange From Baseline in PROMIS® Cognitive Function Score at Days 7, 14, 21, 28, 35, 42, 49 and End of Treatment (d56)Change from baseline to visit 14 (day 42)10.8 units on a scaleStandard Deviation 11.2
700mg LeronlimabChange From Baseline in PROMIS® Cognitive Function Score at Days 7, 14, 21, 28, 35, 42, 49 and End of Treatment (d56)Change from baseline to visit 6 (day 14)7.4 units on a scaleStandard Deviation 9.6
700mg LeronlimabChange From Baseline in PROMIS® Cognitive Function Score at Days 7, 14, 21, 28, 35, 42, 49 and End of Treatment (d56)Change from baseline to visit 16 (day 49)10.3 units on a scaleStandard Deviation 10.8
700mg LeronlimabChange From Baseline in PROMIS® Cognitive Function Score at Days 7, 14, 21, 28, 35, 42, 49 and End of Treatment (d56)Change from baseline to visit 10 (day 28)9.0 units on a scaleStandard Deviation 8.9
700mg LeronlimabChange From Baseline in PROMIS® Cognitive Function Score at Days 7, 14, 21, 28, 35, 42, 49 and End of Treatment (d56)Change from baseline to end of treatment (day 56)10.9 units on a scaleStandard Deviation 10.8
700mg LeronlimabChange From Baseline in PROMIS® Cognitive Function Score at Days 7, 14, 21, 28, 35, 42, 49 and End of Treatment (d56)Baseline (day 0)29.6 units on a scaleStandard Deviation 5.5
PlaceboChange From Baseline in PROMIS® Cognitive Function Score at Days 7, 14, 21, 28, 35, 42, 49 and End of Treatment (d56)Change from baseline to end of treatment (day 56)6.3 units on a scaleStandard Deviation 8.8
PlaceboChange From Baseline in PROMIS® Cognitive Function Score at Days 7, 14, 21, 28, 35, 42, 49 and End of Treatment (d56)Baseline (day 0)34.6 units on a scaleStandard Deviation 9.5
PlaceboChange From Baseline in PROMIS® Cognitive Function Score at Days 7, 14, 21, 28, 35, 42, 49 and End of Treatment (d56)Change from baseline to visit 4 (day 7)2.7 units on a scaleStandard Deviation 8.2
PlaceboChange From Baseline in PROMIS® Cognitive Function Score at Days 7, 14, 21, 28, 35, 42, 49 and End of Treatment (d56)Change from baseline to visit 6 (day 14)4.9 units on a scaleStandard Deviation 9.5
PlaceboChange From Baseline in PROMIS® Cognitive Function Score at Days 7, 14, 21, 28, 35, 42, 49 and End of Treatment (d56)Change from baseline to visit 8 (day 21)4.6 units on a scaleStandard Deviation 7.9
PlaceboChange From Baseline in PROMIS® Cognitive Function Score at Days 7, 14, 21, 28, 35, 42, 49 and End of Treatment (d56)Change from baseline to visit 10 (day 28)4.1 units on a scaleStandard Deviation 8
PlaceboChange From Baseline in PROMIS® Cognitive Function Score at Days 7, 14, 21, 28, 35, 42, 49 and End of Treatment (d56)Change from baseline to visit 12 (day 35)6.2 units on a scaleStandard Deviation 9.1
PlaceboChange From Baseline in PROMIS® Cognitive Function Score at Days 7, 14, 21, 28, 35, 42, 49 and End of Treatment (d56)Change from baseline to visit 14 (day 42)6.2 units on a scaleStandard Deviation 8.6
PlaceboChange From Baseline in PROMIS® Cognitive Function Score at Days 7, 14, 21, 28, 35, 42, 49 and End of Treatment (d56)Change from baseline to visit 16 (day 49)7.4 units on a scaleStandard Deviation 9.7
Secondary

Change From Baseline in PROMIS® Fatigue Score at Days 7,14, 21, 28, 35, 42 and End of Treatment (Day 56).

Change from baseline in physical and psychological fatigue measured using the PROMIS® scale. A decrease in the score compared to baseline shows an improvement in the symptom. PROMIS definition - Patient-Reported Outcomes Measurement Information System. The Fatigue Short Form (4a) was used (Section 17.3 Appendix 3 of protocol). Raw fatigue scores range from 4 to 20 and are converted to a T-score metric where the response from the general population is set at 50 with standard deviations at 10; a score of greater than 60 would be one std dev greater than the general population, meaning more fatigue. A link to the fatigue score maps is provided in the hyperlinks section. The minimum fatigue T-score is 33.7 (with a std error of 4.9) and a maximum score of 75.8 (with a std error of 3.9). The higher the score, the more fatigue. A decrease in the fatigue score from baseline to day 28 and day 56 would indicate decrease in fatigue.

Time frame: Between Baseline (day 0), Visit 4 (day 7), Visit 6 (day 14), Visit 8 (day 21) Visit 10 (day 28), Visit 12 (day 35), Visit 14 (day 42), Visit 16 (Day 56) and Visit 17 (day 56, end of treatment).

Population: mITT

ArmMeasureGroupValue (MEAN)Dispersion
700mg LeronlimabChange From Baseline in PROMIS® Fatigue Score at Days 7,14, 21, 28, 35, 42 and End of Treatment (Day 56).Change from baseline to visit 4 (day 7)-5.3 Units on a scaleStandard Deviation 9.9
700mg LeronlimabChange From Baseline in PROMIS® Fatigue Score at Days 7,14, 21, 28, 35, 42 and End of Treatment (Day 56).Change from baseline to Visit 12 (day 25)-11.1 Units on a scaleStandard Deviation 13.4
700mg LeronlimabChange From Baseline in PROMIS® Fatigue Score at Days 7,14, 21, 28, 35, 42 and End of Treatment (Day 56).Change from baseline to visit 8 (day 21)-8.4 Units on a scaleStandard Deviation 14.6
700mg LeronlimabChange From Baseline in PROMIS® Fatigue Score at Days 7,14, 21, 28, 35, 42 and End of Treatment (Day 56).Change from baseline to visit 14 (day 42)-11.0 Units on a scaleStandard Deviation 14
700mg LeronlimabChange From Baseline in PROMIS® Fatigue Score at Days 7,14, 21, 28, 35, 42 and End of Treatment (Day 56).Change from baseline to visit 6 (day 14)-7.6 Units on a scaleStandard Deviation 10.7
700mg LeronlimabChange From Baseline in PROMIS® Fatigue Score at Days 7,14, 21, 28, 35, 42 and End of Treatment (Day 56).change from baseline to visit 16 (day 49)-11.8 Units on a scaleStandard Deviation 12.9
700mg LeronlimabChange From Baseline in PROMIS® Fatigue Score at Days 7,14, 21, 28, 35, 42 and End of Treatment (Day 56).Change from baseline to visit 10 (day 28)-8.8 Units on a scaleStandard Deviation 12.1
700mg LeronlimabChange From Baseline in PROMIS® Fatigue Score at Days 7,14, 21, 28, 35, 42 and End of Treatment (Day 56).Change from baseline to end of treatment (day 56)-11.1 Units on a scaleStandard Deviation 11.9
700mg LeronlimabChange From Baseline in PROMIS® Fatigue Score at Days 7,14, 21, 28, 35, 42 and End of Treatment (Day 56).Baseline score (day 0)68.4 Units on a scaleStandard Deviation 6.5
PlaceboChange From Baseline in PROMIS® Fatigue Score at Days 7,14, 21, 28, 35, 42 and End of Treatment (Day 56).Change from baseline to end of treatment (day 56)-10.2 Units on a scaleStandard Deviation 10.8
PlaceboChange From Baseline in PROMIS® Fatigue Score at Days 7,14, 21, 28, 35, 42 and End of Treatment (Day 56).Baseline score (day 0)66.6 Units on a scaleStandard Deviation 7.1
PlaceboChange From Baseline in PROMIS® Fatigue Score at Days 7,14, 21, 28, 35, 42 and End of Treatment (Day 56).Change from baseline to visit 4 (day 7)-6.1 Units on a scaleStandard Deviation 8.5
PlaceboChange From Baseline in PROMIS® Fatigue Score at Days 7,14, 21, 28, 35, 42 and End of Treatment (Day 56).Change from baseline to visit 6 (day 14)-7.6 Units on a scaleStandard Deviation 8.5
PlaceboChange From Baseline in PROMIS® Fatigue Score at Days 7,14, 21, 28, 35, 42 and End of Treatment (Day 56).Change from baseline to visit 8 (day 21)-10.2 Units on a scaleStandard Deviation 10.1
PlaceboChange From Baseline in PROMIS® Fatigue Score at Days 7,14, 21, 28, 35, 42 and End of Treatment (Day 56).Change from baseline to visit 10 (day 28)-7.5 Units on a scaleStandard Deviation 10.5
PlaceboChange From Baseline in PROMIS® Fatigue Score at Days 7,14, 21, 28, 35, 42 and End of Treatment (Day 56).Change from baseline to Visit 12 (day 25)-8.6 Units on a scaleStandard Deviation 10.8
PlaceboChange From Baseline in PROMIS® Fatigue Score at Days 7,14, 21, 28, 35, 42 and End of Treatment (Day 56).Change from baseline to visit 14 (day 42)-8.1 Units on a scaleStandard Deviation 11.2
PlaceboChange From Baseline in PROMIS® Fatigue Score at Days 7,14, 21, 28, 35, 42 and End of Treatment (Day 56).change from baseline to visit 16 (day 49)-11.0 Units on a scaleStandard Deviation 11.5
Secondary

Change From Baseline in PROMIS® Sleep Disturbance Score at Days 7,14, 21, 28, 35, 42, 49 and End of Treatment (Day 56).

Assessment of change in sleep disturbance between baseline, day 28 and day 56 used the PROMIS® Sleep Disturbance Short Form (see Appendix 5 in Section 17 of the protocol). Four questions are scored between 1 (best score for good quality sleep) and 5 (worst score) such that the lower the score, the better the sleep. Raw scores are converted to a T-score with a mean of 50 and a standard deviation (SD) of 10 for the general population. T-scores of 60 are one SD worse than average (worse quality sleep). By comparison, Sleep Disturbance T-scores of 40 are one SD better than average. The PROMIS Sleep Disturbance scoring manual shows the lowest sleep disturbance score of 4 converting to a T score of 32 with a std error of 5.2, while the highest score of 20 converts to a T score of 73.3 with a std error of 4.6. The change from baseline is based on patients with paired values.

Time frame: Between Baseline (day 0), Visit 4 (day 7), Visit 6 (day 14), Visit 8 (day 21) Visit 10 (day 28), Visit 12 (day 35), Visit 14 (day 42), Visit 16 (Day 56) and Visit 17 (day 56, end of treatment).

Population: mITT

ArmMeasureGroupValue (MEAN)Dispersion
700mg LeronlimabChange From Baseline in PROMIS® Sleep Disturbance Score at Days 7,14, 21, 28, 35, 42, 49 and End of Treatment (Day 56).Change from baseline to visit 4 (day 7)-4.1 score on a scaleStandard Deviation 8.6
700mg LeronlimabChange From Baseline in PROMIS® Sleep Disturbance Score at Days 7,14, 21, 28, 35, 42, 49 and End of Treatment (Day 56).Change from baseline to visit 12 (day 35)-8.3 score on a scaleStandard Deviation 10.8
700mg LeronlimabChange From Baseline in PROMIS® Sleep Disturbance Score at Days 7,14, 21, 28, 35, 42, 49 and End of Treatment (Day 56).Change from baseline visit 8 (day 21)-7.7 score on a scaleStandard Deviation 10.2
700mg LeronlimabChange From Baseline in PROMIS® Sleep Disturbance Score at Days 7,14, 21, 28, 35, 42, 49 and End of Treatment (Day 56).Change from baseline to visit 14 (day 42)-7.7 score on a scaleStandard Deviation 10.7
700mg LeronlimabChange From Baseline in PROMIS® Sleep Disturbance Score at Days 7,14, 21, 28, 35, 42, 49 and End of Treatment (Day 56).Change from baseline to visit 6 (day 14)-5.3 score on a scaleStandard Deviation 9.6
700mg LeronlimabChange From Baseline in PROMIS® Sleep Disturbance Score at Days 7,14, 21, 28, 35, 42, 49 and End of Treatment (Day 56).Change from baseline to visit 16 (day 49)-7.6 score on a scaleStandard Deviation 9.5
700mg LeronlimabChange From Baseline in PROMIS® Sleep Disturbance Score at Days 7,14, 21, 28, 35, 42, 49 and End of Treatment (Day 56).Change from baseline to visit 10 (day 28)-7.2 score on a scaleStandard Deviation 8.9
700mg LeronlimabChange From Baseline in PROMIS® Sleep Disturbance Score at Days 7,14, 21, 28, 35, 42, 49 and End of Treatment (Day 56).Change from baseline to end of treatment (day 56)-8.3 score on a scaleStandard Deviation 9.4
700mg LeronlimabChange From Baseline in PROMIS® Sleep Disturbance Score at Days 7,14, 21, 28, 35, 42, 49 and End of Treatment (Day 56).Baseline score (day 0)60.2 score on a scaleStandard Deviation 8
PlaceboChange From Baseline in PROMIS® Sleep Disturbance Score at Days 7,14, 21, 28, 35, 42, 49 and End of Treatment (Day 56).Change from baseline to end of treatment (day 56)-5.5 score on a scaleStandard Deviation 9.4
PlaceboChange From Baseline in PROMIS® Sleep Disturbance Score at Days 7,14, 21, 28, 35, 42, 49 and End of Treatment (Day 56).Baseline score (day 0)58.3 score on a scaleStandard Deviation 8.5
PlaceboChange From Baseline in PROMIS® Sleep Disturbance Score at Days 7,14, 21, 28, 35, 42, 49 and End of Treatment (Day 56).Change from baseline to visit 4 (day 7)-1.9 score on a scaleStandard Deviation 6.2
PlaceboChange From Baseline in PROMIS® Sleep Disturbance Score at Days 7,14, 21, 28, 35, 42, 49 and End of Treatment (Day 56).Change from baseline to visit 6 (day 14)-3.4 score on a scaleStandard Deviation 8
PlaceboChange From Baseline in PROMIS® Sleep Disturbance Score at Days 7,14, 21, 28, 35, 42, 49 and End of Treatment (Day 56).Change from baseline visit 8 (day 21)-5.1 score on a scaleStandard Deviation 7.1
PlaceboChange From Baseline in PROMIS® Sleep Disturbance Score at Days 7,14, 21, 28, 35, 42, 49 and End of Treatment (Day 56).Change from baseline to visit 10 (day 28)-5.7 score on a scaleStandard Deviation 9.2
PlaceboChange From Baseline in PROMIS® Sleep Disturbance Score at Days 7,14, 21, 28, 35, 42, 49 and End of Treatment (Day 56).Change from baseline to visit 12 (day 35)-4.2 score on a scaleStandard Deviation 6.5
PlaceboChange From Baseline in PROMIS® Sleep Disturbance Score at Days 7,14, 21, 28, 35, 42, 49 and End of Treatment (Day 56).Change from baseline to visit 14 (day 42)-5.3 score on a scaleStandard Deviation 7.9
PlaceboChange From Baseline in PROMIS® Sleep Disturbance Score at Days 7,14, 21, 28, 35, 42, 49 and End of Treatment (Day 56).Change from baseline to visit 16 (day 49)-6.0 score on a scaleStandard Deviation 10.4
Secondary

Duration (Days) of Hospitalization During the Treatment Phase

Duration (in days) of hospitalization required during treatment phase

Time frame: Between baseline (start of treatment) and day 56 (end of treatment)

Population: mITT

ArmMeasureValue (NUMBER)
700mg LeronlimabDuration (Days) of Hospitalization During the Treatment Phase0 days
PlaceboDuration (Days) of Hospitalization During the Treatment Phase0 days
Secondary

Duration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.

Number of days when any symptoms scored as moderate or severe at baseline (Day 0) are still scored as moderate or severe through day 56 (end of treatment) or symptoms scored as mild or absent at baseline are scored as mild or worse at day 56 (end of treatment).

Time frame: Duration of symptoms from baseline (day 0, start of treatment) and day 56 (end of treatment)

Population: mITT

ArmMeasureGroupValue (MEAN)Dispersion
700mg LeronlimabDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of dizziness11.8 daysStandard Deviation 17.6
700mg LeronlimabDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of fast heartbeat14.8 daysStandard Deviation 18.7
700mg LeronlimabDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) joint pain/swelling15.9 daysStandard Deviation 16.7
700mg LeronlimabDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of vomiting0.3 daysStandard Deviation 0.7
700mg LeronlimabDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of cough14.9 daysStandard Deviation 18.8
700mg LeronlimabDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of Stuff/Runny Nose19.3 daysStandard Deviation 23
700mg LeronlimabDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of shortness of breath11.5 daysStandard Deviation 17.4
700mg LeronlimabDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of tightness of chest10.3 daysStandard Deviation 14.8
700mg LeronlimabDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of fatigue6.5 daysStandard Deviation 14
700mg LeronlimabDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of exertional malaise12.7 daysStandard Deviation 18.8
700mg LeronlimabDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) muscle aches / cramps16.5 daysStandard Deviation 19.6
700mg LeronlimabDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of Muscle Weakness17.1 daysStandard Deviation 19.4
700mg LeronlimabDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of chills or shivering6.6 daysStandard Deviation 11.1
700mg LeronlimabDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of feeling hot or feverish10.5 daysStandard Deviation 13.6
700mg LeronlimabDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of difficulty in concentration15.6 daysStandard Deviation 20.3
700mg LeronlimabDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of sleep disturbance13.3 daysStandard Deviation 17.2
700mg LeronlimabDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of headache16.0 daysStandard Deviation 16.6
700mg LeronlimabDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of sore throat10.6 daysStandard Deviation 15.7
700mg LeronlimabDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of anxiety16.8 daysStandard Deviation 22.3
700mg LeronlimabDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of tingling or numbness14.0 daysStandard Deviation 19.3
700mg LeronlimabDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of nausea6.8 daysStandard Deviation 9.8
700mg LeronlimabDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of diarrhea8.5 daysStandard Deviation 13.7
700mg LeronlimabDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of change to sense of smell16.8 daysStandard Deviation 21.2
700mg LeronlimabDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) in change of sense of taste13.5 daysStandard Deviation 18.3
PlaceboDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) muscle aches / cramps17.7 daysStandard Deviation 16.6
PlaceboDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of sore throat9.4 daysStandard Deviation 13.4
PlaceboDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of tightness of chest12.3 daysStandard Deviation 17.1
PlaceboDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) in change of sense of taste8.6 daysStandard Deviation 17
PlaceboDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of fast heartbeat16.0 daysStandard Deviation 15.6
PlaceboDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of Muscle Weakness20.8 daysStandard Deviation 17.9
PlaceboDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of dizziness16.9 daysStandard Deviation 18.6
PlaceboDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) joint pain/swelling18.3 daysStandard Deviation 18.6
PlaceboDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of difficulty in concentration11.8 daysStandard Deviation 17.7
PlaceboDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of nausea8.5 daysStandard Deviation 12.5
PlaceboDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of chills or shivering3.9 daysStandard Deviation 7.7
PlaceboDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of vomiting0.6 daysStandard Deviation 1.6
PlaceboDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of change to sense of smell8.5 daysStandard Deviation 15.5
PlaceboDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of cough7.8 daysStandard Deviation 12.8
PlaceboDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of feeling hot or feverish9.9 daysStandard Deviation 16.2
PlaceboDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of Stuff/Runny Nose20.7 daysStandard Deviation 20.9
PlaceboDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of anxiety15.1 daysStandard Deviation 17.4
PlaceboDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of shortness of breath13.9 daysStandard Deviation 17.4
PlaceboDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of diarrhea7.1 daysStandard Deviation 9.5
PlaceboDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of sleep disturbance14.4 daysStandard Deviation 17.5
PlaceboDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of fatigue10.6 daysStandard Deviation 18.4
PlaceboDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of tingling or numbness18.3 daysStandard Deviation 19.4
PlaceboDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of exertional malaise10.6 daysStandard Deviation 15.3
PlaceboDuration of COVID-19 Associated Symptoms From Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Duration (days) of headache17.8 daysStandard Deviation 18
Secondary

Number of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.

Symptom-free days are defined as number of days when any symptoms scored as mild, moderate or severe at baseline are scored as absent (or none) through Day 56 (end of treatment) using a self-assessment diary.

Time frame: Between start of treatment (day0) and day 56 (end of treatment)

Population: mITT

ArmMeasureGroupValue (MEAN)Dispersion
700mg LeronlimabNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free of cough16.8 DaysStandard Deviation 19.4
700mg LeronlimabNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free of sore throat4.9 DaysStandard Deviation 9.8
700mg LeronlimabNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free of stuffy or runny nose8.7 DaysStandard Deviation 13.2
700mg LeronlimabNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free of shortness of breath8.2 DaysStandard Deviation 12
700mg LeronlimabNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free of tightness of chest10.3 DaysStandard Deviation 16.1
700mg LeronlimabNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free of fast heartbeat12.8 DaysStandard Deviation 16.5
700mg LeronlimabNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free of fatigue3.9 DaysStandard Deviation 7.5
700mg LeronlimabNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free of exertional malaise7.2 DaysStandard Deviation 10.5
700mg LeronlimabNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free of muscle aches and cramps9.1 DaysStandard Deviation 13.7
700mg LeronlimabNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free of muscle weakness9.5 DaysStandard Deviation 14.7
700mg LeronlimabNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free of joint pain/swelling10.5 DaysStandard Deviation 17.8
700mg LeronlimabNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free of chills or shivering12.6 DaysStandard Deviation 19.4
700mg LeronlimabNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free of being hot or feverish14.8 DaysStandard Deviation 20.4
700mg LeronlimabNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free from difficulty concentrating4.6 DaysStandard Deviation 9.1
700mg LeronlimabNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free from sleep disturbance10.3 DaysStandard Deviation 12.1
700mg LeronlimabNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free from headache15.4 DaysStandard Deviation 16.2
700mg LeronlimabNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free from dizziness11.0 DaysStandard Deviation 18.5
700mg LeronlimabNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free from anxiety5.1 DaysStandard Deviation 11
700mg LeronlimabNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free from tingling or numbness16.5 DaysStandard Deviation 20.1
700mg LeronlimabNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free from nausea14.0 DaysStandard Deviation 19.8
700mg LeronlimabNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free from diarrhea8.3 DaysStandard Deviation 15
700mg LeronlimabNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free from change in sense of smell7.8 DaysStandard Deviation 14.2
700mg LeronlimabNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free from change in sense of taste8.8 DaysStandard Deviation 16.3
PlaceboNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free of chills or shivering16.6 DaysStandard Deviation 21.6
PlaceboNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free of cough11.3 DaysStandard Deviation 17.1
PlaceboNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free from anxiety12.4 DaysStandard Deviation 16.4
PlaceboNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free of sore throat11.5 DaysStandard Deviation 18.5
PlaceboNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free of being hot or feverish14.5 DaysStandard Deviation 18.2
PlaceboNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free of stuffy or runny nose12.8 DaysStandard Deviation 17.7
PlaceboNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free from diarrhea13.6 DaysStandard Deviation 18.3
PlaceboNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free of shortness of breath15.0 DaysStandard Deviation 17
PlaceboNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free from difficulty concentrating7.4 DaysStandard Deviation 13.3
PlaceboNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free of tightness of chest13.4 DaysStandard Deviation 19
PlaceboNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free from tingling or numbness9.0 DaysStandard Deviation 15.8
PlaceboNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free of fast heartbeat16.4 DaysStandard Deviation 18.8
PlaceboNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free from sleep disturbance13.6 DaysStandard Deviation 15.7
PlaceboNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free of fatigue5.4 DaysStandard Deviation 10.9
PlaceboNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free from change in sense of taste8.0 DaysStandard Deviation 16.9
PlaceboNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free of exertional malaise11.1 DaysStandard Deviation 15
PlaceboNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free from headache12.5 DaysStandard Deviation 16.4
PlaceboNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free of muscle aches and cramps14.2 DaysStandard Deviation 15.5
PlaceboNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free from nausea13.9 DaysStandard Deviation 18.1
PlaceboNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free of muscle weakness12.0 DaysStandard Deviation 16.1
PlaceboNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free from dizziness9.9 DaysStandard Deviation 15.3
PlaceboNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free of joint pain/swelling5.1 DaysStandard Deviation 12.7
PlaceboNumber of Days Free of Symptoms Associated With COVID-19 That Were Present at the Start of Study Treatment (Day 0) Based on Self-assessment Using Daily Symptom Diary.Days free from change in sense of smell6.9 DaysStandard Deviation 15.3
Secondary

Number of Participants Requiring Hospitalization During the Treatment Phase

Number of participants who required hospitalization during the treatment phase.

Time frame: Between baseline (start of treatment) and day 56 (end of treatment)

Population: mITT

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
700mg LeronlimabNumber of Participants Requiring Hospitalization During the Treatment Phase0 Participants
PlaceboNumber of Participants Requiring Hospitalization During the Treatment Phase0 Participants
Secondary

Progression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.

Progression or worsening of symptoms is defined as number of days when any symptoms scored as 2 at baseline scored as 3 through day 56 or 1 at baseline are scored as 2 or 3 through day 56 or scored 0 at study entry scored as 1, 2 or 3 through day 56. No change in symptoms would give a score of 0, symptom progression would give a positive number, symptom improvement would a negative number. Minimum baseline symptom score for eligibility for the study was 6. Maximum symptom score is 70, therefore if all symptoms progressed to the severest level the change in score would be +64. If all patients had a severe score for all symptoms at baseline and all improved to no symptoms at day 56, the maximum improvement in score would be -70.

Time frame: Between start of treatment (day0) and day 56 (end of treatment)

Population: mITT

ArmMeasureGroupValue (MEAN)Dispersion
700mg LeronlimabProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Joint Pain/swelling-0.8 score on a scaleStandard Deviation 0.7
700mg LeronlimabProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Chills and shivering-0.6 score on a scaleStandard Deviation 0.6
700mg LeronlimabProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Tingling or numbness-0.8 score on a scaleStandard Deviation 1
700mg LeronlimabProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Vomiting0.0 score on a scaleStandard Deviation 0.1
700mg LeronlimabProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Sense of taste-0.3 score on a scaleStandard Deviation 0.5
700mg LeronlimabProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Hot or feverish-0.5 score on a scaleStandard Deviation 0.8
700mg LeronlimabProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Difficulty in concentrating-1.0 score on a scaleStandard Deviation 1
700mg LeronlimabProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Sleep disturbance-1.2 score on a scaleStandard Deviation 0.9
700mg LeronlimabProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Headache-1.0 score on a scaleStandard Deviation 1
700mg LeronlimabProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Dizziness-0.7 score on a scaleStandard Deviation 1
700mg LeronlimabProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Anxiety-0.7 score on a scaleStandard Deviation 0.9
700mg LeronlimabProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Nausea-0.6 score on a scaleStandard Deviation 0.9
700mg LeronlimabProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Diarrhea-0.0 score on a scaleStandard Deviation 0.6
700mg LeronlimabProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Sense of Smell-0.3 score on a scaleStandard Deviation 0.5
700mg LeronlimabProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Cough-0.6 score on a scaleStandard Deviation 0.8
700mg LeronlimabProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Sore throat-0.1 score on a scaleStandard Deviation 0.7
700mg LeronlimabProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Stuffy or runny nose-0.7 score on a scaleStandard Deviation 0.8
700mg LeronlimabProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Shortness of breath-0.8 score on a scaleStandard Deviation 1
700mg LeronlimabProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Tightness of chest-0.6 score on a scaleStandard Deviation 0.9
700mg LeronlimabProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Fast heartbeat-0.8 score on a scaleStandard Deviation 0.8
700mg LeronlimabProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Fatigue-1.1 score on a scaleStandard Deviation 0.9
700mg LeronlimabProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Exertional Malaise-1.1 score on a scaleStandard Deviation 1.1
700mg LeronlimabProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Muscle aches and cramps-0.9 score on a scaleStandard Deviation 0.9
700mg LeronlimabProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Muscle weakness-0.9 score on a scaleStandard Deviation 1.1
PlaceboProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Exertional Malaise-0.9 score on a scaleStandard Deviation 1
PlaceboProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Joint Pain/swelling-0.3 score on a scaleStandard Deviation 0.9
PlaceboProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Tightness of chest-0.3 score on a scaleStandard Deviation 0.9
PlaceboProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Sense of Smell-0.2 score on a scaleStandard Deviation 0.4
PlaceboProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Sense of taste-0.2 score on a scaleStandard Deviation 0.4
PlaceboProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Diarrhea-0.6 score on a scaleStandard Deviation 1
PlaceboProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Stuffy or runny nose-0.1 score on a scaleStandard Deviation 0.8
PlaceboProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Chills and shivering-0.5 score on a scaleStandard Deviation 0.8
PlaceboProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Muscle weakness-0.5 score on a scaleStandard Deviation 0.8
PlaceboProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Hot or feverish-0.6 score on a scaleStandard Deviation 1.1
PlaceboProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Cough-0.4 score on a scaleStandard Deviation 0.9
PlaceboProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Difficulty in concentrating-1.1 score on a scaleStandard Deviation 1
PlaceboProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Fast heartbeat-0.5 score on a scaleStandard Deviation 1
PlaceboProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Sleep disturbance-1.1 score on a scaleStandard Deviation 1
PlaceboProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Sore throat-0.2 score on a scaleStandard Deviation 0.8
PlaceboProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Headache-0.7 score on a scaleStandard Deviation 1
PlaceboProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Muscle aches and cramps-0.7 score on a scaleStandard Deviation 0.9
PlaceboProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Dizziness-0.4 score on a scaleStandard Deviation 0.9
PlaceboProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Fatigue-1.1 score on a scaleStandard Deviation 1
PlaceboProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Anxiety-0.8 score on a scaleStandard Deviation 0.8
PlaceboProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Tingling or numbness-0.3 score on a scaleStandard Deviation 0.9
PlaceboProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Shortness of breath-0.6 score on a scaleStandard Deviation 0.9
PlaceboProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Nausea-0.5 score on a scaleStandard Deviation 0.9
PlaceboProgression (or Worsening) of COVID-19-associated Symptoms Through Day 56 Compared to Baseline.Vomiting0.0 score on a scaleStandard Deviation 0.1
Other Pre-specified

Change From Baseline in CCR5 Receptor Occupancy on Days 28 and 56.

Exploratory Outcome - Change in CCR5 receptor occupancy from baseline and days 28 and 56 (end of treatment)

Time frame: Change between baseline (start of treatment) and days 28 and 56 (end of treatment)

Other Pre-specified

Change From Baseline in CD4+ and CD8+ T Cell Count on Days 28 and 56.

Exploratory Outcome - Change from baseline in CD4+ and CD8+ T cell count

Time frame: Change between baseline (start of treatment) and days 28 and 56 (end of treatment)

Other Pre-specified

Change From Baseline in C-reactive Protein (CRP) on Days 28 and 56

Exploratory Outcome - Change in C-reactive Protein (CRP) from baseline to Days 28 and 56 (end of treatment)

Time frame: Change between baseline (start of treatment) and days 28 and 56 (end of treatment)

Other Pre-specified

Change From Baseline in Pulse Oxygen Saturation (SpO2) at Day 7, 14, 21, 28, 35, 42, 49, and 56

Exploratory Outcome - Change from baseline in pulse oxygen saturation (SpO2) at Day 7, 14, 21, 28, 35, 42, 49, and 56

Time frame: Change between baseline (start of treatment) and Day 7, 14, 21, 28, 35, 42, 49, and 56 (end of treatment).

Other Pre-specified

Change From Baseline in Serum Cytokine and Chemokine Levels on Days 28 and 56.

Exploratory Outcome - Change from baseline in serum cytokine and chemokine levels

Time frame: Change between baseline (start of treatment) and days 28 and 56 (end of treatment)

Other Pre-specified

Change From Baseline in Transforming Growth Factor Beta 1 (TGF beta1) on Days 28 and 56

Exploratory Outcome - change in TGF-b1 from baseline to days 28 and 56 (end of treatment)

Time frame: Change between baseline (start of treatment) and days 28 and 56 (end of treatment)

Other Pre-specified

Changes in Blood Chemistry, Hematology and Coagulation Parameter Results

Safety Measures - Changes in blood chemistry, hematology and coagulation parameter results

Time frame: Between baseline and day 91

Other Pre-specified

Changes in Electrocardiogram (ECG) Results

Safety Measures - changes in electrocardiogram results

Time frame: Change between baseline and day 91

Other Pre-specified

Changes in Physical Examination Results

Safety Measures - Changes in physical examination results

Time frame: Between baseline and day 91

Other Pre-specified

Changes in Vital Signs Including Temperature, Pulse, Respiratory Rate, Systolic and Diastolic Blood Pressure

Safety Measures - Changes in vital signs including temperature, pulse, respiratory rate, systolic and diastolic blood pressure

Time frame: Between baseline and day 91

Other Pre-specified

Exploration of Biomarkers That May Predict and/or Act as Pharmacodynamic Indicators of Pharmacologic Activity of Leronlimab.

Exploratory Outcome - Exploration of biomarkers that may predict and/or act as pharmacodynamic indicators of pharmacologic activity of leronlimab.

Time frame: 91 Days

Other Pre-specified

Incidence and Severity of Treatment-emergent Adverse Events (TEAEs)

Safety Measures - Incidence and severity of treatment-emergent adverse events

Time frame: Between baseline and day 91

Other Pre-specified

Incidence of Serious Adverse Events (SAEs)

Safety Measures - incidence of severe adverse events

Time frame: Between baseline and day 91

Other Pre-specified

Incidence of TEAEs and SAEs Leading to Discontinuation of Study Medication.

Safety Measures - incidence of TEAEs and SAEs leading to discontinuation of study medication

Time frame: Between baseline and day 56

Other Pre-specified

Incidence of Treatment-related Adverse Events (TEAEs)

Safety Measurement - incidence of treatment emergent adverse events

Time frame: Between baseline and day 91

Source: ClinicalTrials.gov · Data processed: Feb 12, 2026