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    Clinical Trial Results:
    An Adaptive Phase 3, Randomized, Double-blind, Placebo-controlled, Study Assessing Efficacy and Safety of Sarilumab for Hospitalized Patients With COVID-19

    Summary
    EudraCT number
    2020-001162-12
    Trial protocol
    DE   FR   IT   ES  
    Global end of trial date
    02 Sep 2020

    Results information
    Results version number
    v2(current)
    This version publication date
    05 Jan 2023
    First version publication date
    02 Jun 2021
    Other versions
    v1
    Version creation reason
    • Correction of full data set
    Updated safety optional field

    Trial information

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    Trial identification
    Sponsor protocol code
    EFC16844
    Additional study identifiers
    ISRCTN number
    -
    US NCT number
    NCT04327388
    WHO universal trial number (UTN)
    U1111-1249-6021
    Sponsors
    Sponsor organisation name
    Sanofi-aventis Recherche & Développement
    Sponsor organisation address
    1 avenue Pierre Brossolette, Chilly Mazarin Cedex, France, 91385
    Public contact
    Trial Transparency Team, Sanofi aventis recherche & développement, Contact-US@sanofi.com
    Scientific contact
    Trial Transparency Team, Sanofi aventis recherche & développement, Contact-US@sanofi.com
    Paediatric regulatory details
    Is trial part of an agreed paediatric investigation plan (PIP)
    No
    Does article 45 of REGULATION (EC) No 1901/2006 apply to this trial?
    No
    Does article 46 of REGULATION (EC) No 1901/2006 apply to this trial?
    No
    Results analysis stage
    Analysis stage
    Final
    Date of interim/final analysis
    28 Sep 2020
    Is this the analysis of the primary completion data?
    No
    Global end of trial reached?
    Yes
    Global end of trial date
    02 Sep 2020
    Was the trial ended prematurely?
    No
    General information about the trial
    Main objective of the trial
    To evaluate the clinical efficacy of sarilumab relative to the control arm in adult subjects hospitalised with severe or critical Coronavirus Disease 2019 (COVID-19).
    Protection of trial subjects
    Subjects were fully informed of all pertinent aspects of the clinical trial as well as the possibility to discontinue at any time in language and terms appropriate for the subject and considering the local culture. During the course of the trial, subjects were provided with individual subject cards indicating the nature of the trial the subject is participating, contact details and any information needed in the event of a medical emergency. Collected personal data and human biological samples were processed in compliance with the Sanofi-Aventis Group Personal Data Protection Charter ensuring that the Group abides by the laws governing personal data protection in force in all countries in which it operates.
    Background therapy
    -
    Evidence for comparator
    -
    Actual start date of recruitment
    28 Mar 2020
    Long term follow-up planned
    No
    Independent data monitoring committee (IDMC) involvement?
    Yes
    Population of trial subjects
    Number of subjects enrolled per country
    Country: Number of subjects enrolled
    Spain: 43
    Country: Number of subjects enrolled
    France: 47
    Country: Number of subjects enrolled
    Germany: 6
    Country: Number of subjects enrolled
    Italy: 27
    Country: Number of subjects enrolled
    Argentina: 14
    Country: Number of subjects enrolled
    Brazil: 77
    Country: Number of subjects enrolled
    Canada: 21
    Country: Number of subjects enrolled
    Chile: 59
    Country: Number of subjects enrolled
    Israel: 7
    Country: Number of subjects enrolled
    Japan: 6
    Country: Number of subjects enrolled
    Russian Federation: 113
    Worldwide total number of subjects
    420
    EEA total number of subjects
    123
    Number of subjects enrolled per age group
    In utero
    0
    Preterm newborn - gestational age < 37 wk
    0
    Newborns (0-27 days)
    0
    Infants and toddlers (28 days-23 months)
    0
    Children (2-11 years)
    0
    Adolescents (12-17 years)
    0
    Adults (18-64 years)
    290
    From 65 to 84 years
    114
    85 years and over
    16

    Subject disposition

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    Recruitment
    Recruitment details
    Study was conducted at 46 active centres in 11 countries. 431 subjects were screened between 28 March 2020 and 02 July 2020, of which 10 had screen failures due to exclusion criteria met. 420 subjects were randomised in treatment by interactive response technology (IRT) (2:2:1 ratio) to receive sarilumab 200 milligrams (mg)/400mg and placebo.

    Pre-assignment
    Screening details
    Randomisation was stratified by severity of illness (severe disease, critical disease) and use of systemic corticosteroids (Yes/No). One subject was randomised twice and thus excluded from randomisation.

    Period 1
    Period 1 title
    Overall Study (overall period)
    Is this the baseline period?
    Yes
    Allocation method
    Randomised - controlled
    Blinding used
    Double blind
    Roles blinded
    Subject, Investigator, Carer, Assessor

    Arms
    Are arms mutually exclusive
    Yes

    Arm title
    Sarilumab 200 mg
    Arm description
    Sarilumab 200 mg, single dose of intravenous (IV) injection on Day 1. Subjects could receive a second dose of sarilumab 200 mg 24 to 48 hours after the first dose if first and any one of last three criteria was met as compared to Day 1 (as per following protocol amendment 2 [dated 08-Apr-2020]): • Benefit risk assessment by the investigator favored the administration of another dose of study drug without compromising safety and • Increase/recurrence of fever or • Increase/no change in fraction of inspired oxygen (FiO2) requirement or • Required vasopressors, extracorporeal membrane oxygenation (ECMO) or development of multi-organ dysfunction.
    Arm type
    Experimental

    Investigational medicinal product name
    Sarilumab
    Investigational medicinal product code
    SAR153191
    Other name
    Kevzara®
    Pharmaceutical forms
    Injection
    Routes of administration
    Intravenous use
    Dosage and administration details
    200 mg, single dose of IV injection on Day 1.

    Arm title
    Sarilumab 400 mg
    Arm description
    Sarilumab 400 mg, single dose of IV injection on Day 1. Subjects could receive a second dose of sarilumab 400 mg 24 to 48 hours after the first dose if first and any one of last three criteria was met as compared to Day 1 (as per following protocol amendment 2 [dated 08-Apr-2020]): •Benefit risk assessment by the investigator favored the administration of another dose of study drug without compromising safety and •Increase/recurrence of fever or •Increase/no change in FiO2 requirement or •Required vasopressors, ECMO or development of multi-organ dysfunction.
    Arm type
    Experimental

    Investigational medicinal product name
    Sarilumab
    Investigational medicinal product code
    SAR153191
    Other name
    Kevzara®
    Pharmaceutical forms
    Injection
    Routes of administration
    Intravenous use
    Dosage and administration details
    400 mg, single dose of IV injection on Day 1.

    Arm title
    Placebo
    Arm description
    Placebo (for sarilumab), single dose of IV injection on Day 1. Subjects could receive a second dose of placebo (for sarilumab) 24 to 48 hours after the first dose if first and any one of last three criteria was met as compared to Day 1 (as per following protocol amendment 2 [dated 08-Apr-2020]): •Benefit risk assessment by the investigator favored the administration of another dose of study drug without compromising safety and •Increase/recurrence of fever or •Increase/no change in FiO2 requirement or •Required vasopressors, ECMO or development of multi-organ dysfunction.
    Arm type
    Placebo

    Investigational medicinal product name
    Placebo
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Injection
    Routes of administration
    Intravenous use
    Dosage and administration details
    Placebo matching sarilumab, single dose of IV injection on Day 1.

    Number of subjects in period 1
    Sarilumab 200 mg Sarilumab 400 mg Placebo
    Started
    161
    173
    86
    Treated
    159
    173
    84
    Subjects Who Received Second Dose
    13 [1]
    11 [2]
    5 [3]
    Completed
    141
    153
    75
    Not completed
    20
    20
    11
         Randomised and not treated
    2
    -
    2
         Adverse Event
    17
    18
    9
         Unspecified
    1
    2
    -
    Notes
    [1] - The number of subjects at this milestone seems inconsistent with the number of subjects in the arm. It is expected that the number of subjects will be greater than, or equal to the number that completed, minus those who left.
    Justification: Subjects who met prespecified criteria as per protocol amendment 2, received a second dose of the study drug (based on the original treatment group assigned) 24 to 48 hours after the first dose.
    [2] - The number of subjects at this milestone seems inconsistent with the number of subjects in the arm. It is expected that the number of subjects will be greater than, or equal to the number that completed, minus those who left.
    Justification: Subjects who met prespecified criteria as per protocol amendment 2, received a second dose of the study drug (based on the original treatment group assigned) 24 to 48 hours after the first dose.
    [3] - The number of subjects at this milestone seems inconsistent with the number of subjects in the arm. It is expected that the number of subjects will be greater than, or equal to the number that completed, minus those who left.
    Justification: Subjects who met prespecified criteria as per protocol amendment 2, received a second dose of the study drug (based on the original treatment group assigned) 24 to 48 hours after the first dose.

    Baseline characteristics

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    Baseline characteristics reporting groups
    Reporting group title
    Sarilumab 200 mg
    Reporting group description
    Sarilumab 200 mg, single dose of intravenous (IV) injection on Day 1. Subjects could receive a second dose of sarilumab 200 mg 24 to 48 hours after the first dose if first and any one of last three criteria was met as compared to Day 1 (as per following protocol amendment 2 [dated 08-Apr-2020]): • Benefit risk assessment by the investigator favored the administration of another dose of study drug without compromising safety and • Increase/recurrence of fever or • Increase/no change in fraction of inspired oxygen (FiO2) requirement or • Required vasopressors, extracorporeal membrane oxygenation (ECMO) or development of multi-organ dysfunction.

    Reporting group title
    Sarilumab 400 mg
    Reporting group description
    Sarilumab 400 mg, single dose of IV injection on Day 1. Subjects could receive a second dose of sarilumab 400 mg 24 to 48 hours after the first dose if first and any one of last three criteria was met as compared to Day 1 (as per following protocol amendment 2 [dated 08-Apr-2020]): •Benefit risk assessment by the investigator favored the administration of another dose of study drug without compromising safety and •Increase/recurrence of fever or •Increase/no change in FiO2 requirement or •Required vasopressors, ECMO or development of multi-organ dysfunction.

    Reporting group title
    Placebo
    Reporting group description
    Placebo (for sarilumab), single dose of IV injection on Day 1. Subjects could receive a second dose of placebo (for sarilumab) 24 to 48 hours after the first dose if first and any one of last three criteria was met as compared to Day 1 (as per following protocol amendment 2 [dated 08-Apr-2020]): •Benefit risk assessment by the investigator favored the administration of another dose of study drug without compromising safety and •Increase/recurrence of fever or •Increase/no change in FiO2 requirement or •Required vasopressors, ECMO or development of multi-organ dysfunction.

    Reporting group values
    Sarilumab 200 mg Sarilumab 400 mg Placebo Total
    Number of subjects
    161 173 86 420
    Age categorical
    Units: Subjects
    Age continuous
    Units: years
        arithmetic mean (standard deviation)
    58.3 ± 13.7 58.0 ± 14.1 59.9 ± 14.8 -
    Gender categorical
    Units: Subjects
        Female
    52 74 30 156
        Male
    109 99 56 264
    Race
    Units: Subjects
        American Indian or Alaska Native
    2 2 1 5
        Asian
    5 9 6 20
        Native Hawaiian or Other Pacific Islander
    0 0 1 1
        Black or African American
    3 5 1 9
        White
    128 128 69 325
        More than one race
    0 3 0 3
        Not Reported
    23 26 8 57
    Clinical Status: 7-point ordinal scale
    7-point ordinal scale with scores range from: 1= death; 2= hospitalised, on invasive mechanical ventilation or ECMO; 3= hospitalised, on non-invasive ventilation/high flow oxygen devices; 4= hospitalised, requiring supplemental oxygen; 5= hospitalised, not requiring supplemental oxygen - requiring ongoing medical care (COVID-19 related/otherwise); 6= hospitalised, not requiring supplemental oxygen - no longer required ongoing medical care; 7= not hospitalised, higher score = less severity. Number of subjects in each scale category were reported.
    Units: Subjects
        Scale Score 1
    0 0 0 0
        Scale Score 2
    17 24 10 51
        Scale Score 3
    28 21 11 60
        Scale Score 4
    113 128 65 306
        Scale Score 5
    3 0 0 3
        Scale Score 6
    0 0 0 0
        Scale Score 7
    0 0 0 0

    End points

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    End points reporting groups
    Reporting group title
    Sarilumab 200 mg
    Reporting group description
    Sarilumab 200 mg, single dose of intravenous (IV) injection on Day 1. Subjects could receive a second dose of sarilumab 200 mg 24 to 48 hours after the first dose if first and any one of last three criteria was met as compared to Day 1 (as per following protocol amendment 2 [dated 08-Apr-2020]): • Benefit risk assessment by the investigator favored the administration of another dose of study drug without compromising safety and • Increase/recurrence of fever or • Increase/no change in fraction of inspired oxygen (FiO2) requirement or • Required vasopressors, extracorporeal membrane oxygenation (ECMO) or development of multi-organ dysfunction.

    Reporting group title
    Sarilumab 400 mg
    Reporting group description
    Sarilumab 400 mg, single dose of IV injection on Day 1. Subjects could receive a second dose of sarilumab 400 mg 24 to 48 hours after the first dose if first and any one of last three criteria was met as compared to Day 1 (as per following protocol amendment 2 [dated 08-Apr-2020]): •Benefit risk assessment by the investigator favored the administration of another dose of study drug without compromising safety and •Increase/recurrence of fever or •Increase/no change in FiO2 requirement or •Required vasopressors, ECMO or development of multi-organ dysfunction.

    Reporting group title
    Placebo
    Reporting group description
    Placebo (for sarilumab), single dose of IV injection on Day 1. Subjects could receive a second dose of placebo (for sarilumab) 24 to 48 hours after the first dose if first and any one of last three criteria was met as compared to Day 1 (as per following protocol amendment 2 [dated 08-Apr-2020]): •Benefit risk assessment by the investigator favored the administration of another dose of study drug without compromising safety and •Increase/recurrence of fever or •Increase/no change in FiO2 requirement or •Required vasopressors, ECMO or development of multi-organ dysfunction.

    Primary: Time to Improvement in Clinical Status of Subjects (Using 7-point Ordinal Scale Score) by at Least 2 Points

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    End point title
    Time to Improvement in Clinical Status of Subjects (Using 7-point Ordinal Scale Score) by at Least 2 Points
    End point description
    Time to improvement of greater than or equal to (>=) 2 points in clinical status (CS) assessment-defined as time (in days) from 1st dose of study drug to time of 1st occurrence of improvement of >=2 points in CS of subjects assessed using 7-point ordinal scale (calculated as:date of first occurrence/episode of event – date of first dose + 1). Seven-point ordinal scale for clinical assessment ranges from 1=death; 2=hospitalised (H), on invasive mechanical ventilation/ECMO; 3=H, on non-invasive ventilation/high flow oxygen devices; 4=H, requiring supplemental oxygen; 5=H, not requiring supplemental oxygen - requiring ongoing medical care (COVID-19 related/otherwise); 6=H, not requiring supplemental oxygen - no longer required ongoing medical care; 7=not H, higher score = less severity. Kaplan-Meier method was used for analysis. Modified intention-to-treat (mITT) population-treated with study medication and were analysed according to initial treatment assigned to subject (as randomised).
    End point type
    Primary
    End point timeframe
    Baseline to Day 29
    End point values
    Sarilumab 200 mg Sarilumab 400 mg Placebo
    Number of subjects analysed
    159
    173
    84
    Units: days
        median (confidence interval 95%)
    10.0 (9.00 to 12.00)
    10.0 (9.00 to 13.00)
    12.0 (9.00 to 15.00)
    Statistical analysis title
    Sarilumab 200 mg versus Placebo
    Statistical analysis description
    Hazard ratio for estimation of treatment effect of each sarilumab dose versus placebo was assessed by cox proportional hazard model stratified by severity of illness (severe, critical) and use of systemic corticosteroids (Yes, No) as entered in IRT.
    Comparison groups
    Sarilumab 200 mg v Placebo
    Number of subjects included in analysis
    243
    Analysis specification
    Pre-specified
    Analysis type
    superiority
    P-value
    = 0.9561 [1]
    Method
    Logrank
    Parameter type
    Hazard ratio (HR)
    Point estimate
    1.026
    Confidence interval
         level
    95%
         sides
    2-sided
         lower limit
    0.751
         upper limit
    1.402
    Notes
    [1] - Analysed based on log-rank test stratified by severity of illness (severe, critical) and use of systemic corticosteroids (Yes, No) as entered in IRT.
    Statistical analysis title
    Sarilumab 400 mg versus Placebo
    Statistical analysis description
    Hazard ratio for estimation of treatment effect of each sarilumab dose versus placebo was assessed by cox proportional hazard model stratified by severity of illness (severe, critical) and use of systemic corticosteroids (Yes, No) as entered in IRT.
    Comparison groups
    Sarilumab 400 mg v Placebo
    Number of subjects included in analysis
    257
    Analysis specification
    Pre-specified
    Analysis type
    superiority
    P-value
    = 0.3376 [2]
    Method
    Logrank
    Parameter type
    Hazard ratio (HR)
    Point estimate
    1.135
    Confidence interval
         level
    95%
         sides
    2-sided
         lower limit
    0.835
         upper limit
    1.543
    Notes
    [2] - Analysed based on logrank test stratified by severity of illness (severe, critical) and use of systemic corticosteroids (Yes, No) as entered in IRT.

    Secondary: Percentage of Subjects Who Were Alive at Day 29

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    End point title
    Percentage of Subjects Who Were Alive at Day 29
    End point description
    Percentage of subjects who were alive at Day 29 were reported in this endpoint. Analysis was performed on mITT population.
    End point type
    Secondary
    End point timeframe
    Day 29
    End point values
    Sarilumab 200 mg Sarilumab 400 mg Placebo
    Number of subjects analysed
    159
    173
    84
    Units: percentage of subjects
        number (not applicable)
    89.9
    91.9
    91.7
    Statistical analysis title
    Sarilumab 200 mg versus Placebo
    Comparison groups
    Placebo v Sarilumab 200 mg
    Number of subjects included in analysis
    243
    Analysis specification
    Pre-specified
    Analysis type
    superiority
    P-value
    = 0.628 [3]
    Method
    Cochran-Mantel-Haenszel
    Parameter type
    Difference in percentage
    Point estimate
    -1.7
    Confidence interval
         level
    95%
         sides
    2-sided
         lower limit
    -9.27
         upper limit
    5.81
    Notes
    [3] - By Cochran-Mantel-Haenszel test stratified by severity of illness (severe, critical) and use of systemic corticosteroids (Yes, No) as entered in IRT.
    Statistical analysis title
    Sarilumab 400 mg versus Placebo
    Comparison groups
    Sarilumab 400 mg v Placebo
    Number of subjects included in analysis
    257
    Analysis specification
    Pre-specified
    Analysis type
    superiority
    P-value
    = 0.8478 [4]
    Method
    Cochran-Mantel-Haenszel
    Parameter type
    Difference in percentage
    Point estimate
    0.2
    Confidence interval
         level
    95%
         sides
    2-sided
         lower limit
    -6.93
         upper limit
    7.41
    Notes
    [4] - By Cochran-Mantel-Haenszel test stratified by severity of illness (severe, critical) and use of systemic corticosteroids (Yes, No) as entered in IRT.

    Secondary: Percentage of Subjects With Improvement in Clinical Status (According to 7-point Ordinal Scale Score) by at Least 1 Point From Baseline at Days 4, 7, 15, 21, and 29

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    End point title
    Percentage of Subjects With Improvement in Clinical Status (According to 7-point Ordinal Scale Score) by at Least 1 Point From Baseline at Days 4, 7, 15, 21, and 29
    End point description
    Clinical status of subjects was assessed using 7-point ordinal scale ranges from: 1=death; 2=hospitalised, on invasive mechanical ventilation/ECMO; 3=hospitalised, on non-invasive ventilation/high flow oxygen devices; 4=hospitalised, requiring supplemental oxygen; 5=hospitalised, not requiring supplemental oxygen - requiring ongoing medical care (COVID-19 related/otherwise); 6=hospitalised, not requiring supplemental oxygen - no longer required ongoing medical care; 7=not hospitalised, higher score=less severity. Percentage of subjects with >=1 point improvement in clinical status from Baseline at Days 4, 7, 15, 21, and 29 (assessed using the 7-point ordinal scale) were reported. Analysis was performed on mITT population.
    End point type
    Secondary
    End point timeframe
    Baseline, Days 4, 7, 15, 21, and 29
    End point values
    Sarilumab 200 mg Sarilumab 400 mg Placebo
    Number of subjects analysed
    159
    173
    84
    Units: percentage of subjects
    number (not applicable)
        Day 4
    25.2
    25.4
    23.8
        Day 7
    51.6
    48.6
    42.9
        Day 15
    74.8
    76.9
    71.4
        Day 21
    80.5
    81.5
    85.7
        Day 29
    84.9
    84.4
    88.1
    No statistical analyses for this end point

    Secondary: Change From Baseline at Days 4, 7, 15, 21, 29 in 7-point Ordinal Scale Score

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    End point title
    Change From Baseline at Days 4, 7, 15, 21, 29 in 7-point Ordinal Scale Score
    End point description
    Clinical status of subjects was assessed using 7-point ordinal scale ranges from: 1=death; 2=hospitalised, on invasive mechanical ventilation/ECMO; 3=hospitalised, on non-invasive ventilation/high flow oxygen devices; 4=hospitalised, requiring supplemental oxygen; 5=hospitalised, not requiring supplemental oxygen - requiring ongoing medical care (COVID-19 related/otherwise); 6=hospitalised, not requiring supplemental oxygen - no longer required ongoing medical care; 7=not hospitalised, higher score=less severity. Analysis was performed on mITT population. Here, ‘n’ = subjects with available data for each specified category.
    End point type
    Secondary
    End point timeframe
    Baseline, Days 4, 7, 15, 21, and 29
    End point values
    Sarilumab 200 mg Sarilumab 400 mg Placebo
    Number of subjects analysed
    159
    173
    84
    Units: scores on a scale
    arithmetic mean (standard deviation)
        Day 4 (n = 159, 173, 84)
    0.1 ± 0.9
    0.1 ± 1.0
    0.2 ± 0.9
        Day 7 (n = 159, 173, 84)
    0.7 ± 1.5
    0.7 ± 1.6
    0.7 ± 1.4
        Day 15 (n = 158, 171, 83)
    1.9 ± 1.8
    2.0 ± 1.9
    1.7 ± 1.8
        Day 21 (n = 155, 169, 83)
    2.3 ± 1.9
    2.3 ± 1.9
    2.5 ± 1.7
        Day 29 (n = 156, 170, 83)
    2.5 ± 1.9
    2.5 ± 1.9
    2.7 ± 1.6
    No statistical analyses for this end point

    Secondary: Time to Resolution of Fever

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    End point title
    Time to Resolution of Fever
    End point description
    Resolution of fever was defined as body temperature less than or equal to (<=) 36.6 degree Celsius (°C) (axilla), or <=37.2°C (oral), or <=37.8°C (rectal or tympanic) for at least 48 hours without antipyretics/until discharge, whichever was sooner. Time to resolution of fever (in days) was calculated as: date of first ccurrence/episode of the event (resolution of fever) - date of first dose + 1. Kaplan-Meier method was used for estimation. Analysis was performed on mITT population.
    End point type
    Secondary
    End point timeframe
    Baseline to Day 29
    End point values
    Sarilumab 200 mg Sarilumab 400 mg Placebo
    Number of subjects analysed
    159
    173
    84
    Units: days
        median (confidence interval 95%)
    8.0 (7.00 to 9.00)
    9.0 (7.00 to 10.00)
    7.00 (6.00 to 12.00)
    No statistical analyses for this end point

    Secondary: Time to Resolution of Fever and Improvement in Oxygenation

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    End point title
    Time to Resolution of Fever and Improvement in Oxygenation
    End point description
    Time to resolution of fever was defined as body temperature <=36.6°C (axilla), or <=37.2 °C (oral), or <=37.8°C (rectal or tympanic) for at least 48 hours without antipyretics or until discharge, whichever was sooner. Improvement in oxygenation was defined as oxygen saturation (SpO2)/FiO2 of 50 or greater compared to the nadir SpO2/FiO2 for at least 48 hours, or until discharge, whichever was sooner. Nadir SpO2/FiO2 was the nadir (lowest value) at any point in the study. Time to resolution of fever and improvement in oxygenation (in days) was calculated as: date of first occurrence/episode of the event (resolution of fever and improvement in oxygenation) - date of first dose + 1. Kaplan-Meier method was used for estimation. Analysis was performed on mITT population.
    End point type
    Secondary
    End point timeframe
    Baseline to Day 29
    End point values
    Sarilumab 200 mg Sarilumab 400 mg Placebo
    Number of subjects analysed
    159
    173
    84
    Units: days
        median (confidence interval 95%)
    9.0 (8.00 to 10.00)
    10.0 (9.00 to 13.00)
    8.0 (7.00 to 12.00)
    No statistical analyses for this end point

    Secondary: Number of Days With Fever

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    End point title
    Number of Days With Fever
    End point description
    Fever was defined as body temperature greater than (>) 37.4°C (axilla), or >38.0 °C (oral), or >38.4°C (rectal or tympanic) based on maximum value observed during a 24-hour period. Number of days with fever were reported. Least square (LS) mean and standard error (SE) were estimated using the analysis of covariance (ANCOVA) model with treatment group and randomisation strata as fixed effects. Analysis was performed on mITT population. Here, 'number of subjects analysed' = subjects evaluable for this endpoint.
    End point type
    Secondary
    End point timeframe
    Baseline to Day 29
    End point values
    Sarilumab 200 mg Sarilumab 400 mg Placebo
    Number of subjects analysed
    143
    159
    77
    Units: days
        least squares mean (standard error)
    1.2 ± 0.23
    1.3 ± 0.21
    1.8 ± 0.30
    No statistical analyses for this end point

    Secondary: Percentage of Subjects in Each National Early Warning Score 2 (NEWS2) Clinical Risk Category at Baseline and at Days 4, 7, 15, 21, and 29

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    End point title
    Percentage of Subjects in Each National Early Warning Score 2 (NEWS2) Clinical Risk Category at Baseline and at Days 4, 7, 15, 21, and 29
    End point description
    NEWS2:standardises assessment of acute-illness severity,track clinical condition & alert clinical teams to subject deterioration. NEWS2 score:based on 7 clinical parameters:respiration rate, oxygen (O2) saturation,supplemental O2,systolic blood pressure, pulse rate,level of consciousness & temperature. Score of 0,1,2 & 3 was allocated to each parameter except supplemental O2(score of 0 or 1) & level of consciousness (score of 0 or 3), where 0=normal health condition to 3=worst health condition;higher score=more severity. All scores were summed to get an aggregate score which ranged from 0 to 19, higher scores=more severity/higher risk. Percentage of subjects in following clinical risk categories were reported:low risk(score 0 - 4);low to medium risk(score of 3 in any individual parameter);medium risk (score 5 - 6);high risk (score 7 - 19). mITT population. 'Number of subjects analysed'=subjects evaluable for this endpoint & ‘n’=subjects with available data for each specified category.
    End point type
    Secondary
    End point timeframe
    Baseline, Days 4, 7, 15, 21, and 29
    End point values
    Sarilumab 200 mg Sarilumab 400 mg Placebo
    Number of subjects analysed
    159
    169
    84
    Units: percentage of subjects
    number (not applicable)
        Baseline: Low (n = 146, 163, 79)
    28.8
    22.1
    34.2
        Baseline: Low to Medium (n = 146, 163, 79)
    0
    0
    0
        Baseline: Medium (n = 146, 163, 79)
    34.2
    37.4
    27.8
        Baseline: High (n = 146, 163, 79)
    37.0
    40.5
    38.0
        Day 4: Low (n = 159, 169, 84)
    52.8
    56.2
    40.5
        Day 4: Low to Meium (n = 159, 169, 84)
    0.6
    1.2
    0
        Day 4: Medium (n = 159, 169, 84)
    19.5
    16.6
    28.6
        Day 4: High (n = 159, 169, 84)
    27.0
    26.0
    31.0
        Day 7: Low (n = 135, 143, 74)
    57.0
    60.8
    51.4
        Day 7: Low to Medium (n = 135, 143, 74)
    0
    2.1
    0
        Day 7: Medium (n = 135, 143, 74)
    20.0
    10.5
    20.3
        Day 7: High (n = 135, 143, 74)
    23.0
    26.6
    28.4
        Day 15: Low (n = 61, 67, 36)
    52.5
    52.2
    61.1
        Day 15: Low to Medium (n = 61, 67, 36)
    0
    1.5
    2.8
        Day 15: Medium (n = 61, 67, 36)
    21.3
    19.4
    13.9
        Day 15: High (n = 61, 67, 36)
    26.2
    26.9
    22.2
        Day 21: Low (n = 29, 38, 12)
    44.8
    50.0
    66.7
        Day 21: Low to Medium (n = 29, 38, 12)
    13.8
    0
    0
        Day 21: Medium (n = 29, 38, 12)
    24.1
    21.1
    8.3
        Day 21: High (n = 29, 38, 12)
    17.2
    28.9
    25.0
        Day 29: Low (n = 14, 18, 5)
    57.1
    27.8
    60.0
        Day 29: Low to Medium (n = 14, 18, 5)
    0
    0
    0
        Day 29: Medium (n = 14, 18, 5)
    14.3
    27.8
    20.0
        Day 29: High (n = 14, 18, 5)
    28.6
    44.4
    20.0
    No statistical analyses for this end point

    Secondary: Time to National Early Warning Score of Less Than (<) 2 and Maintained for 24 Hours

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    End point title
    Time to National Early Warning Score of Less Than (<) 2 and Maintained for 24 Hours
    End point description
    Time to NEWS2 <2 and maintained for 24 hours :time (in days) from 1st dose of study drug until 1st occurrence of NEWS score of <2 (maintained for 24 hours); calculated as: date of 1st occurrence/episode of event (NEWS score of <2) – date of first dose + 1. NEWS2 score was based on 7 clinical parameters: respiration rate, oxygen saturation, supplemental oxygen, systolic blood pressure, pulse rate, level of consciousness, and temperature. A score of 0, 1, 2 and 3 was allocated to each parameter except supplemental oxygen (score of 0 or 1 was allocated) and level of consciousness (score of 0 or 3 was allocated), where 0=normal health condition to 3=worst health condition; higher score=more severity. All scores were summed to get an aggregate score which ranged from 0 to 19, with higher scores=more severity/higher risk. Kaplan-Meier method was used for analysis. Analysis was performed on mITT population.
    End point type
    Secondary
    End point timeframe
    Baseline to Day 29
    End point values
    Sarilumab 200 mg Sarilumab 400 mg Placebo
    Number of subjects analysed
    159
    173
    84
    Units: days
        median (confidence interval 95%)
    9.0 (7.00 to 10.00)
    9.0 (8.00 to 11.00)
    11.0 (8.00 to 14.00)
    No statistical analyses for this end point

    Secondary: Change From Baseline at Days 4, 7, 15, 21, and 29 in National Early Warning Score 2

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    End point title
    Change From Baseline at Days 4, 7, 15, 21, and 29 in National Early Warning Score 2
    End point description
    NEWS2:standardises assessment of acute-illness severity,track clinical condition & alert clinical teams to subject deterioration. NEWS2 score:based on 7 clinical parameters:respiration rate, oxygen (O2) saturation,supplemental O2,systolic blood pressure, pulse rate,level of consciousness & temperature. Score of 0,1,2 & 3 was allocated to each parameter except supplemental O2(score of 0 or 1) & level of consciousness(score of 0 or 3), where 0=normal health condition to 3=worst health condition;higher score=more severity. All scores were summed to get an aggregate score which ranged from 0 to 19, higher scores=more severity/higher risk. Percentage of subjects in following clinical risk categories were reported: low risk(score 0 - 4);low to medium risk(score of 3 in any individual parameter);medium risk (score 5 - 6);high risk (score 7 - 19). mITT population. 'Number of subjects analysed'=subjects evaluable for this endpoint & ‘n’=subjects with available data for each specified category.
    End point type
    Secondary
    End point timeframe
    Baseline, Days 4, 7, 15, 21, and 29
    End point values
    Sarilumab 200 mg Sarilumab 400 mg Placebo
    Number of subjects analysed
    146
    159
    79
    Units: scores on a scale
    least squares mean (standard error)
        Day 4 (n = 146, 159, 79)
    -1.07 ± 0.212
    -1.25 ± 0.198
    -0.36 ± 0.274
        Day 7 (n = 122, 133, 69)
    -1.63 ± 0.265
    -1.47 ± 0.245
    -0.83 ± 0.338
        Day 15 (n = 55, 62, 33)
    -2.10 ± 0.508
    -1.83 ± 0.467
    -2.36 ± 0.641
        Day 21 (n = 26, 34, 12)
    -3.02 ± 0.769
    -2.24 ± 0.676
    -2.96 ± 1.090
        Day 29 (n = 13, 17, 5)
    -2.57 ± 0.936
    -1.27 ± 0.884
    -3.64 ± 1.508
    No statistical analyses for this end point

    Secondary: Time-to-improvement in Oxygenation

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    End point title
    Time-to-improvement in Oxygenation
    End point description
    Time-to-improvement in oxygenation was defined as increase in SpO2/FiO2 of 50 or greater compared to the nadir SpO2/FiO2 for at least 48 hours or until discharge, whichever was sooner. Nadir SpO2/FiO2 was the nadir (lowest value) at any point in the study. Time to improvement in oxygenation was calculated as: date of first occurrence/episode of the event (oxygenation) – date of first dose + 1. Kaplan-Meier method was used for estimation. Analysis was performed on mITT population.
    End point type
    Secondary
    End point timeframe
    Baseline to Day 29
    End point values
    Sarilumab 200 mg Sarilumab 400 mg Placebo
    Number of subjects analysed
    159
    173
    84
    Units: days
        median (confidence interval 95%)
    6.0 (5.00 to 7.00)
    6.0 (5.00 to 7.00)
    7.0 (5.00 to 8.00)
    No statistical analyses for this end point

    Secondary: Percentage of Subjects Alive Off Supplemental Oxygen at Day 29

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    End point title
    Percentage of Subjects Alive Off Supplemental Oxygen at Day 29
    End point description
    Supplemental oxygen was defined as oxygen administration by nasal cannula, simple face mask, or other similar oxygen delivery device. Analysis was performed on mITT population.
    End point type
    Secondary
    End point timeframe
    Day 29
    End point values
    Sarilumab 200 mg Sarilumab 400 mg Placebo
    Number of subjects analysed
    159
    173
    84
    Units: percentage of subjects
        number (not applicable)
    84.9
    83.8
    86.9
    No statistical analyses for this end point

    Secondary: Percentage of Days With Hypoxemia

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    End point title
    Percentage of Days With Hypoxemia
    End point description
    Hypoxemia (low level of oxygen in the blood) was defined as SpO2 <93% on room air, or required supplemental oxygen, or mechanical ventilatory support. Days meeting the criteria for hypoxemia since the first study dose were counted and the percentage of days with hypoxemia were calculated as: 100*number of days with the hypoxemia divided by number of days of follow up (defined as the earlier date of death or discharge or last visit up to Day 29). LS mean and SE were estimated using the ANCOVA model with treatment group and randomisation strata as fixed effects. Analysis was performed on mITT population.
    End point type
    Secondary
    End point timeframe
    Baseline to Day 29
    End point values
    Sarilumab 200 mg Sarilumab 400 mg Placebo
    Number of subjects analysed
    159
    173
    84
    Units: percentage of days
        least squares mean (standard error)
    73.01 ± 2.063
    75.10 ± 1.941
    76.32 ± 2.724
    No statistical analyses for this end point

    Secondary: Percentage of Days With Supplemental Oxygen Use

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    End point title
    Percentage of Days With Supplemental Oxygen Use
    End point description
    Supplemental oxygen (oxygen therapy) was defined as oxygen administration using oxygen delivery device (e.g. nasal cannula, simple face mask, non-rebreather mask, high flow nasal cannula, non-invasive ventilation, invasive mechanical ventilation, extracorporeal life support, etc.). Days meeting the criteria for supplemental oxygen use since the first study dose were counted and the percentage of days with supplemental oxygen use were calculated as: 100*number of days with the supplemental oxygen use divided by number of days of follow up (defined as the earlier date of death or discharge or last visit up to Day 29). LS mean and SE were estimated using the ANCOVA model with treatment group and randomisation strata as fixed effects. Analysis was performed on mITT population.
    End point type
    Secondary
    End point timeframe
    Baseline to Day 29
    End point values
    Sarilumab 200 mg Sarilumab 400 mg Placebo
    Number of subjects analysed
    159
    173
    84
    Units: percentage of days
        least squares mean (standard error)
    70.57 ± 2.082
    73.30 ± 1.959
    73.23 ± 2.748
    No statistical analyses for this end point

    Secondary: Percentage of Days With Resting Respiratory Rate >24 Breaths Per Minute

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    End point title
    Percentage of Days With Resting Respiratory Rate >24 Breaths Per Minute
    End point description
    Resting respiratory rate was measured in terms of number of breaths per minute (bpm) while a person is at rest. Only the days with respiratory rate >24 breath per minute since the first dose were counted and percentage of days with respiratory rate >24 bpm were calculated as: 100*number of days with respiratory rate >24 bpm divided by number of days of follow up (defined as the earlier date of death or discharge or last visit up to Day 29). LS mean and SE were estimated using the ANCOVA model with treatment group and randomisation strata as fixed effects. Analysis was performed on mITT population. Here,'number of subjects analysed' = subjects evaluable for this endpoint.
    End point type
    Secondary
    End point timeframe
    Baseline to Day 29
    End point values
    Sarilumab 200 mg Sarilumab 400 mg Placebo
    Number of subjects analysed
    150
    164
    78
    Units: percentage of days
        least squares mean (standard error)
    14.74 ± 1.582
    14.58 ± 1.485
    15.74 ± 2.105
    No statistical analyses for this end point

    Secondary: Time to Oxygen Saturation >=94% on Room Air

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    End point title
    Time to Oxygen Saturation >=94% on Room Air
    End point description
    Time to oxygen saturation >=94% on room air was defined as the time (in days) from first dose of study drug until the time of first occurrence of oxygen saturation >=94% and it was calculated as: date of first occurrence/episode of the event (oxygen saturation >=94%) – date of first dose + 1. Kaplan-Meier method was used for estimation. Analysis was performed on mITT population.
    End point type
    Secondary
    End point timeframe
    Baseline to Day 29
    End point values
    Sarilumab 200 mg Sarilumab 400 mg Placebo
    Number of subjects analysed
    159
    173
    84
    Units: days
        median (confidence interval 95%)
    8.0 (6.00 to 10.00)
    8.0 (8.00 to 11.00)
    8.0 (7.00 to 11.00)
    No statistical analyses for this end point

    Secondary: Mean Number of Ventilator Free Days

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    End point title
    Mean Number of Ventilator Free Days
    End point description
    Mean number of ventilator free days in subjects were reported. Analysis was performed on mITT population.
    End point type
    Secondary
    End point timeframe
    Baseline to Day 29
    End point values
    Sarilumab 200 mg Sarilumab 400 mg Placebo
    Number of subjects analysed
    159
    173
    84
    Units: days
        arithmetic mean (standard deviation)
    23.8 ± 9.4
    24.0 ± 8.8
    24.9 ± 8.6
    No statistical analyses for this end point

    Secondary: Percentage of Subjects With Initiation of Mechanical Ventilation, Non-invasive Ventilation, or Use of High Flow Nasal Cannula

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    End point title
    Percentage of Subjects With Initiation of Mechanical Ventilation, Non-invasive Ventilation, or Use of High Flow Nasal Cannula
    End point description
    Percentage of subjects with initiation of mechanical ventilation or non-invasive ventilation or use of high flow nasal cannula were reported in this endpoint. Analysis was performed on mITT population. Here, 'number of subjects analysed' = subjects evaluable for this endpoint.
    End point type
    Secondary
    End point timeframe
    Baseline to Day 29
    End point values
    Sarilumab 200 mg Sarilumab 400 mg Placebo
    Number of subjects analysed
    127
    141
    68
    Units: percentage of subjects
        number (not applicable)
    20.5
    23.4
    19.1
    No statistical analyses for this end point

    Secondary: Percentage of Subjects Who Required Rescue Medication

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    End point title
    Percentage of Subjects Who Required Rescue Medication
    End point description
    Rescue medications were defined as the immunosuppressive (methylprednisolone, dexamethasone and prednisone) therapies. During the course of the study, subject who required rescue therapy was based on the judgement of the study physician. Analysis was performed on mITT population.
    End point type
    Secondary
    End point timeframe
    Baseline to Day 28
    End point values
    Sarilumab 200 mg Sarilumab 400 mg Placebo
    Number of subjects analysed
    159
    173
    84
    Units: percentage of subjects
        number (not applicable)
    13.8
    15.0
    22.6
    No statistical analyses for this end point

    Secondary: Percentage of Subjects Who Needed Intensive Care Unit (ICU) Care During Study

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    End point title
    Percentage of Subjects Who Needed Intensive Care Unit (ICU) Care During Study
    End point description
    Percentage of subjects who needed ICU care until Day 29 were reported for those not in an ICU at baseline. Analysis was performed on mITT population. Here, 'number of subjects analysed' = subjects evaluable for this endpoint.
    End point type
    Secondary
    End point timeframe
    Baseline to Day 29
    End point values
    Sarilumab 200 mg Sarilumab 400 mg Placebo
    Number of subjects analysed
    98
    114
    56
    Units: percentage of subjects
        number (not applicable)
    11.2
    14.9
    12.5
    No statistical analyses for this end point

    Secondary: Number of Days of Hospitalisation Among Survivors (Alive Subjects)

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    End point title
    Number of Days of Hospitalisation Among Survivors (Alive Subjects)
    End point description
    Number of days of hospitalisation among alive subjects were counted Day 60 since the first dose. LS mean and SE were estimated using the ANCOVA model with treatment group and randomisation strata as fixed effects. Analysis was performed on mITT population. Here, 'number of subjects analysed' = subjects evaluable for this endpoint.
    End point type
    Secondary
    End point timeframe
    At Day 60
    End point values
    Sarilumab 200 mg Sarilumab 400 mg Placebo
    Number of subjects analysed
    142
    155
    75
    Units: days
        least squares mean (standard error)
    15.6 ± 0.96
    16.1 ± 0.91
    15.9 ± 1.27
    No statistical analyses for this end point

    Secondary: Number of Subjects With Treatment-emergent Serious Adverse Events (SAEs)

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    End point title
    Number of Subjects With Treatment-emergent Serious Adverse Events (SAEs)
    End point description
    An adverse event (AE) was defined as any untoward medical occurrence in a subject who received study drug and did not necessarily had to have a causal relationship with the treatment. Treatment-emergent AEs (TEAEs) were the AEs that developed or worsened or became serious during the TEAE period (from the time of first dose of study drug to the last dose of study drug + 60 days). SAEs were any untoward medical occurrence that resulted in any of the following outcomes: death, life-threatening, required initial or prolonged in-patient hospitalisation, persistent or significant disability/incapacity, congenital anomaly/birth defect, or considered as medically important event. Analysis was performed on safety population which included all randomised subjects who were treated with the study medication and were analysed according to the actual treatment received.
    End point type
    Secondary
    End point timeframe
    Baseline up to 60 days
    End point values
    Sarilumab 200 mg Sarilumab 400 mg Placebo
    Number of subjects analysed
    159
    173
    84
    Units: subjects
    42
    51
    20
    No statistical analyses for this end point

    Secondary: Number of Subjects With Major or Opportunistic Bacterial or Fungal Infections

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    End point title
    Number of Subjects With Major or Opportunistic Bacterial or Fungal Infections
    End point description
    Major or opportunistic bacterial or fungal infections was considered as an adverse event of special interest (AESI: defined as an AE [serious or non-serious] of scientific and medical concern specific to the Sponsor's product or program, for which ongoing monitoring and immediate notification by the Investigator to the Sponsor was required). Analysis was performed on safety population.
    End point type
    Secondary
    End point timeframe
    Baseline up to 60 days
    End point values
    Sarilumab 200 mg Sarilumab 400 mg Placebo
    Number of subjects analysed
    159
    173
    84
    Units: subjects
    8
    15
    3
    No statistical analyses for this end point

    Secondary: Number of Subjects With Grade 4 Neutropenia and Grade 4 Neutropenia With Concurrent Invasive Infection

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    End point title
    Number of Subjects With Grade 4 Neutropenia and Grade 4 Neutropenia With Concurrent Invasive Infection
    End point description
    Grade 4 neutropenia was defined as subjects with absolute neutrophil count (ANC) <500 per cubic millimetre (mm^3). Grade 4 neutropenia with concurrent invasive infection was defined as infections and infestations (in subjects with Grade 4 neutropenia) within 1 week of ANC <500/mm^3 and was considered as an AESI (defined as an AE [serious or non-serious] of scientific and medical concern specific to the Sponsor’s product or program, for which ongoing monitoring and immediate notification by the Investigator to the Sponsor was required). Analysis was performed on safety population. Here, 'n' = subjects with available data for each specified category, "0" in 'n' filed signifies that no subjects had Grade 4 neutropenia and therefore were not evaluable and 'CII' represents concurrent invasive infection.
    End point type
    Secondary
    End point timeframe
    Baseline up to 60 days
    End point values
    Sarilumab 200 mg Sarilumab 400 mg Placebo
    Number of subjects analysed
    159
    173
    84
    Units: subjects
        Grade 4 neutropenia (n=159,173,84)
    3
    6
    0
        Grade 4 Neutrapenia + CII (n=3,6,0)
    0
    0
    0
    No statistical analyses for this end point

    Secondary: Number of Subjects With Grade >=2 Infusion Reactions, Grade >=2 Hypersensitivity Reactions and Gastrointestinal Perforation

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    End point title
    Number of Subjects With Grade >=2 Infusion Reactions, Grade >=2 Hypersensitivity Reactions and Gastrointestinal Perforation
    End point description
    Grade >=2 (moderate) infusion related reactions (defined as any TEAE signs or symptoms experienced by subjects who received study medication within 24 hours of the start of infusion) and Grade >=2 (moderate) hypersensitivity reactions (anaphylactic reaction, hypersensitivity or angioedema and moderate reactions) were considered as AESI which was defined as an AE (serious or non-serious) of scientific and medical concern specific to the Sponsor's product or program, for which ongoing monitoring and immediate notification by the Investigator to the Sponsor was required. Gastrointestinal perforation was defined as formation of a hole through the stomach, large bowel or small intestine. Analysis was performed on safety population.
    End point type
    Secondary
    End point timeframe
    Baseline up to 60 days
    End point values
    Sarilumab 200 mg Sarilumab 400 mg Placebo
    Number of subjects analysed
    159
    173
    84
    Units: subjects
        Grade >=2 Infusion related reactions
    1
    6
    0
        Grade >=2 Hypersensitivity reactions
    1
    7
    0
        Gastrointestinal perforation
    1
    0
    0
    No statistical analyses for this end point

    Secondary: Number of Subjects With Potentially Clinically Significant Laboratory Abnormalities (PCSA): Hematological Parameter - Hemoglobin, Leukocytes and Platelets

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    End point title
    Number of Subjects With Potentially Clinically Significant Laboratory Abnormalities (PCSA): Hematological Parameter - Hemoglobin, Leukocytes and Platelets
    End point description
    Criteria for PCSA: • Hemoglobin: less than or equal to (<=) 115 grams per litre (g/L) (male) and <=95 g/L (female); greater than or equal to (>=) 185 g/L (male) and >=165 g/L (female); and decrease from baseline >=20 g/L • Leukocytes: <3.0*10^9/Litres (L) (Non-Black [NB]) or <2.0*10^9/L (black [B]); >=16.0*10^9/L. • Platelets: < 100*10^9/L; >=700*10^9/L. Analysis was performed on safety population. Here, 'number of subjects analysed' = subjects evaluable for this endpoint.
    End point type
    Secondary
    End point timeframe
    Baseline up to 60 days
    End point values
    Sarilumab 200 mg Sarilumab 400 mg Placebo
    Number of subjects analysed
    156
    170
    84
    Units: subjects
        Hemoglobin <=115 g/L (male) and <=95 g/L (female)
    29
    34
    15
        Hemoglobin >=185 g/L (male) and >=165 g/L (female)
    0
    0
    0
        Hemoglobin decrease from baseline >=20 g/L
    32
    30
    15
        Leukocytes <3.0*10^9/L (NB) or <2.0*10^9/L (B)
    19
    31
    1
        Leukocytes >=16*10^9/L
    13
    21
    6
        Platelets <100*10^9/L
    2
    7
    3
        Platelets >=700*10^9/L
    3
    2
    2
    No statistical analyses for this end point

    Secondary: Number of Subjects With Potentially Clinically Significant Laboratory Abnormalities: Renal Function Parameters

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    End point title
    Number of Subjects With Potentially Clinically Significant Laboratory Abnormalities: Renal Function Parameters
    End point description
    Criteria for PCSA: Creatinine: >=150 micromoles per litre (mcmol/L); >=30% change from baseline; >= 100% change from baseline. Analysis was performed on safety population. Here, 'number of subjects analysed' = subjects evaluable for this endpoint.
    End point type
    Secondary
    End point timeframe
    Baseline up to 60 days
    End point values
    Sarilumab 200 mg Sarilumab 400 mg Placebo
    Number of subjects analysed
    156
    170
    84
    Units: subjects
        Creatinine >=150 mcmol/L
    15
    15
    5
        >=30% change from baseline in Creatinine
    31
    30
    10
        >=100% change from baseline in Creatinine
    6
    7
    3
    No statistical analyses for this end point

    Secondary: Number of Subjects With Potentially Clinically Significant Laboratory Abnormalities: Liver Function Parameters

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    End point title
    Number of Subjects With Potentially Clinically Significant Laboratory Abnormalities: Liver Function Parameters
    End point description
    Criteria for PCSA: • Alanine Aminotransferase (ALT): >3 upper limit of normal (ULN); >5 ULN; >10 ULN and >20 ULN • Bilirubin: >1.5 ULN; >2 ULN. Analysis was performed on safety population. Here, 'number of subjects analysed'=subjects evaluable for this endpoint & ‘n’=subjects with available data for each specified category.
    End point type
    Secondary
    End point timeframe
    Baseline up to 60 days
    End point values
    Sarilumab 200 mg Sarilumab 400 mg Placebo
    Number of subjects analysed
    156
    169
    84
    Units: subjects
        ALT >3 ULN (n = 156, 168, 83)
    60
    63
    24
        ALT >5 ULN (n = 156, 168, 83)
    28
    25
    12
        ALT >10 ULN (n = 156, 168, 83)
    6
    5
    3
        ALT >20 ULN (n = 156, 168, 83)
    1
    0
    0
        Bilirubin >1.5 ULN (n = 156, 169, 84)
    5
    4
    4
        Bilirubin >2 ULN (n = 156, 169, 84)
    4
    2
    2
    No statistical analyses for this end point

    Adverse events

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    Adverse events information
    Timeframe for reporting adverse events
    All AEs were collected from the time of first dose of study drug up to 60 days regardless of seriousness or relationship to study drug.
    Adverse event reporting additional description
    Reported AEs and deaths were TEAEs that developed/worsened in grade or became serious during ‘TEAE period’ (from the time of first dose of study drug to the last dose of study drug + 60 days). Analysis was performed on safety population.
    Assessment type
    Systematic
    Dictionary used for adverse event reporting
    Dictionary name
    MedDRA
    Dictionary version
    23.0
    Reporting groups
    Reporting group title
    Sarilumab 200 mg
    Reporting group description
    Sarilumab 200 mg, single dose of IV injection on Day 1. Subjects could receive a second dose of sarilumab 200 mg 24 to 48 hours after the first dose if first and any one of last three criteria was met as compared to Day 1 (as per following protocol amendment 2 [dated 08-Apr-2020]): •Benefit risk assessment by the investigator favored the administration of another dose of study drug without compromising safety and •Increase/recurrence of fever or •Increase/no change in FiO2 requirement or •Required vasopressors, ECMO or development of multi-organ dysfunction.

    Reporting group title
    Sarilumab 400 mg
    Reporting group description
    Sarilumab 400 mg, single dose of IV injection on Day 1. Subjects could receive a second dose of sarilumab 400 mg 24 to 48 hours after the first dose if first and any one of last three criteria was met as compared to Day 1 (as per following protocol amendment 2 [dated 08-Apr-2020]): •Benefit risk assessment by the investigator favored the administration of another dose of study drug without compromising safety and •Increase/recurrence of fever or •Increase/no change in FiO2 requirement or •Required vasopressors, ECMO or development of multi-organ dysfunction.

    Reporting group title
    Placebo
    Reporting group description
    Placebo (for sarilumab), single dose of IV injection on Day 1. Subjects could receive a second dose of placebo (for sarilumab) 24 to 48 hours after the first dose if first and any one of last three criteria was met as compared to Day 1 (as per following protocol amendment 2 [dated 08-Apr-2020]): •Benefit risk assessment by the investigator favored the administration of another dose of study drug without compromising safety and •Increase/recurrence of fever or •Increase/no change in FiO2 requirement or •Required vasopressors, ECMO or development of multi-organ dysfunction.

    Serious adverse events
    Sarilumab 200 mg Sarilumab 400 mg Placebo
    Total subjects affected by serious adverse events
         subjects affected / exposed
    42 / 159 (26.42%)
    51 / 173 (29.48%)
    20 / 84 (23.81%)
         number of deaths (all causes)
    17
    18
    9
         number of deaths resulting from adverse events
    Vascular disorders
    Deep Vein Thrombosis
         subjects affected / exposed
    1 / 159 (0.63%)
    1 / 173 (0.58%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 1
    0 / 0
    Hypertensive Crisis
         subjects affected / exposed
    1 / 159 (0.63%)
    0 / 173 (0.00%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Hypotension
         subjects affected / exposed
    0 / 159 (0.00%)
    1 / 173 (0.58%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Peripheral Artery Occlusion
         subjects affected / exposed
    0 / 159 (0.00%)
    1 / 173 (0.58%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Thrombophlebitis Superficial
         subjects affected / exposed
    0 / 159 (0.00%)
    0 / 173 (0.00%)
    1 / 84 (1.19%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Vena Cava Thrombosis
         subjects affected / exposed
    0 / 159 (0.00%)
    0 / 173 (0.00%)
    1 / 84 (1.19%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Venous Thrombosis Limb
         subjects affected / exposed
    1 / 159 (0.63%)
    0 / 173 (0.00%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    General disorders and administration site conditions
    Death
         subjects affected / exposed
    0 / 159 (0.00%)
    0 / 173 (0.00%)
    1 / 84 (1.19%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
    Hyperthermia
         subjects affected / exposed
    0 / 159 (0.00%)
    0 / 173 (0.00%)
    1 / 84 (1.19%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
    Multiple Organ Dysfunction Syndrome
         subjects affected / exposed
    2 / 159 (1.26%)
    3 / 173 (1.73%)
    3 / 84 (3.57%)
         occurrences causally related to treatment / all
    0 / 2
    0 / 3
    0 / 3
         deaths causally related to treatment / all
    0 / 2
    0 / 3
    0 / 3
    Physical Deconditioning
         subjects affected / exposed
    1 / 159 (0.63%)
    0 / 173 (0.00%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Sudden Death
         subjects affected / exposed
    0 / 159 (0.00%)
    1 / 173 (0.58%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 1
    0 / 0
    Respiratory, thoracic and mediastinal disorders
    Acute Respiratory Failure
         subjects affected / exposed
    0 / 159 (0.00%)
    4 / 173 (2.31%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 4
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 1
    0 / 0
    Hypoxia
         subjects affected / exposed
    0 / 159 (0.00%)
    1 / 173 (0.58%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Organising Pneumonia
         subjects affected / exposed
    0 / 159 (0.00%)
    0 / 173 (0.00%)
    1 / 84 (1.19%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Pneumomediastinum
         subjects affected / exposed
    1 / 159 (0.63%)
    0 / 173 (0.00%)
    1 / 84 (1.19%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Pneumothorax
         subjects affected / exposed
    0 / 159 (0.00%)
    1 / 173 (0.58%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Pneumothorax Spontaneous
         subjects affected / exposed
    0 / 159 (0.00%)
    1 / 173 (0.58%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Pulmonary Embolism
         subjects affected / exposed
    1 / 159 (0.63%)
    2 / 173 (1.16%)
    2 / 84 (2.38%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 2
    0 / 2
         deaths causally related to treatment / all
    0 / 1
    0 / 0
    0 / 0
    Respiratory Arrest
         subjects affected / exposed
    1 / 159 (0.63%)
    0 / 173 (0.00%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
    0 / 0
         deaths causally related to treatment / all
    0 / 1
    0 / 0
    0 / 0
    Respiratory Distress
         subjects affected / exposed
    0 / 159 (0.00%)
    1 / 173 (0.58%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Respiratory Failure
         subjects affected / exposed
    6 / 159 (3.77%)
    5 / 173 (2.89%)
    3 / 84 (3.57%)
         occurrences causally related to treatment / all
    0 / 6
    1 / 5
    0 / 3
         deaths causally related to treatment / all
    0 / 1
    0 / 3
    0 / 1
    Investigations
    Alanine Aminotransferase Increased
         subjects affected / exposed
    4 / 159 (2.52%)
    3 / 173 (1.73%)
    1 / 84 (1.19%)
         occurrences causally related to treatment / all
    2 / 4
    3 / 3
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Injury, poisoning and procedural complications
    Ankle Fracture
         subjects affected / exposed
    1 / 159 (0.63%)
    0 / 173 (0.00%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Femur Fracture
         subjects affected / exposed
    1 / 159 (0.63%)
    0 / 173 (0.00%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Infusion Related Reaction
         subjects affected / exposed
    0 / 159 (0.00%)
    1 / 173 (0.58%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    1 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Cardiac disorders
    Atrial Fibrillation
         subjects affected / exposed
    0 / 159 (0.00%)
    0 / 173 (0.00%)
    3 / 84 (3.57%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 3
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Cardiac Arrest
         subjects affected / exposed
    1 / 159 (0.63%)
    0 / 173 (0.00%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
    0 / 0
         deaths causally related to treatment / all
    0 / 1
    0 / 0
    0 / 0
    Cardio-Respiratory Arrest
         subjects affected / exposed
    1 / 159 (0.63%)
    1 / 173 (0.58%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 1
    0 / 0
    Intracardiac Thrombus
         subjects affected / exposed
    1 / 159 (0.63%)
    0 / 173 (0.00%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Pulseless Electrical Activity
         subjects affected / exposed
    0 / 159 (0.00%)
    0 / 173 (0.00%)
    1 / 84 (1.19%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Ventricular Tachycardia
         subjects affected / exposed
    1 / 159 (0.63%)
    0 / 173 (0.00%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Nervous system disorders
    Brain Oedema
         subjects affected / exposed
    1 / 159 (0.63%)
    0 / 173 (0.00%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
    0 / 0
         deaths causally related to treatment / all
    0 / 1
    0 / 0
    0 / 0
    Carotid Artery Thrombosis
         subjects affected / exposed
    0 / 159 (0.00%)
    1 / 173 (0.58%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Cerebrovascular Accident
         subjects affected / exposed
    1 / 159 (0.63%)
    0 / 173 (0.00%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Hydrocephalus
         subjects affected / exposed
    1 / 159 (0.63%)
    0 / 173 (0.00%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
    0 / 0
         deaths causally related to treatment / all
    0 / 1
    0 / 0
    0 / 0
    Hypoxic-Ischaemic Encephalopathy
         subjects affected / exposed
    1 / 159 (0.63%)
    0 / 173 (0.00%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Ischaemic Stroke
         subjects affected / exposed
    2 / 159 (1.26%)
    1 / 173 (0.58%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 2
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 1
    0 / 0
    0 / 0
    Blood and lymphatic system disorders
    Anaemia
         subjects affected / exposed
    0 / 159 (0.00%)
    1 / 173 (0.58%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Blood Loss Anaemia
         subjects affected / exposed
    0 / 159 (0.00%)
    1 / 173 (0.58%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Leukopenia
         subjects affected / exposed
    0 / 159 (0.00%)
    1 / 173 (0.58%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    1 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Neutropenia
         subjects affected / exposed
    1 / 159 (0.63%)
    3 / 173 (1.73%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    3 / 3
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Thrombocytopenia
         subjects affected / exposed
    0 / 159 (0.00%)
    1 / 173 (0.58%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    1 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Eye disorders
    Entropion
         subjects affected / exposed
    0 / 159 (0.00%)
    1 / 173 (0.58%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Gastrointestinal disorders
    Dysphagia
         subjects affected / exposed
    0 / 159 (0.00%)
    1 / 173 (0.58%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Gastric Ulcer Perforation
         subjects affected / exposed
    1 / 159 (0.63%)
    0 / 173 (0.00%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Intra-Abdominal Haematoma
         subjects affected / exposed
    0 / 159 (0.00%)
    1 / 173 (0.58%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Megacolon
         subjects affected / exposed
    0 / 159 (0.00%)
    1 / 173 (0.58%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 1
    0 / 0
    Hepatobiliary disorders
    Cholelithiasis
         subjects affected / exposed
    1 / 159 (0.63%)
    0 / 173 (0.00%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Hepatic Steatosis
         subjects affected / exposed
    0 / 159 (0.00%)
    1 / 173 (0.58%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    1 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Hepatitis
         subjects affected / exposed
    1 / 159 (0.63%)
    1 / 173 (0.58%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    1 / 1
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Hepatitis Acute
         subjects affected / exposed
    0 / 159 (0.00%)
    1 / 173 (0.58%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Hepatocellular Injury
         subjects affected / exposed
    1 / 159 (0.63%)
    0 / 173 (0.00%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Renal and urinary disorders
    Acute Kidney Injury
         subjects affected / exposed
    2 / 159 (1.26%)
    4 / 173 (2.31%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 2
    0 / 4
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Renal Failure
         subjects affected / exposed
    0 / 159 (0.00%)
    2 / 173 (1.16%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 2
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Renal Impairment
         subjects affected / exposed
    0 / 159 (0.00%)
    0 / 173 (0.00%)
    1 / 84 (1.19%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Musculoskeletal and connective tissue disorders
    Rhabdomyolysis
         subjects affected / exposed
    1 / 159 (0.63%)
    0 / 173 (0.00%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Infections and infestations
    Abscess Limb
         subjects affected / exposed
    0 / 159 (0.00%)
    1 / 173 (0.58%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Bacterial Infection
         subjects affected / exposed
    0 / 159 (0.00%)
    1 / 173 (0.58%)
    2 / 84 (2.38%)
         occurrences causally related to treatment / all
    0 / 0
    1 / 1
    2 / 2
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Covid-19 Pneumonia
         subjects affected / exposed
    11 / 159 (6.92%)
    4 / 173 (2.31%)
    2 / 84 (2.38%)
         occurrences causally related to treatment / all
    0 / 11
    0 / 4
    0 / 2
         deaths causally related to treatment / all
    0 / 6
    0 / 3
    0 / 1
    Clostridium Difficile Colitis
         subjects affected / exposed
    0 / 159 (0.00%)
    0 / 173 (0.00%)
    1 / 84 (1.19%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Cystitis Klebsiella
         subjects affected / exposed
    0 / 159 (0.00%)
    1 / 173 (0.58%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    1 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Endocarditis
         subjects affected / exposed
    0 / 159 (0.00%)
    0 / 173 (0.00%)
    1 / 84 (1.19%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Lower Respiratory Tract Infection Fungal
         subjects affected / exposed
    0 / 159 (0.00%)
    1 / 173 (0.58%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    1 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Peritonitis
         subjects affected / exposed
    1 / 159 (0.63%)
    0 / 173 (0.00%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Pneumonia
         subjects affected / exposed
    1 / 159 (0.63%)
    6 / 173 (3.47%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    4 / 6
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Pneumonia Bacterial
         subjects affected / exposed
    1 / 159 (0.63%)
    3 / 173 (1.73%)
    1 / 84 (1.19%)
         occurrences causally related to treatment / all
    0 / 1
    2 / 3
    0 / 1
         deaths causally related to treatment / all
    0 / 1
    1 / 2
    0 / 0
    Pneumonia Klebsiella
         subjects affected / exposed
    1 / 159 (0.63%)
    0 / 173 (0.00%)
    1 / 84 (1.19%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
    Sepsis
         subjects affected / exposed
    0 / 159 (0.00%)
    0 / 173 (0.00%)
    1 / 84 (1.19%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Septic Shock
         subjects affected / exposed
    4 / 159 (2.52%)
    4 / 173 (2.31%)
    2 / 84 (2.38%)
         occurrences causally related to treatment / all
    0 / 4
    1 / 5
    0 / 2
         deaths causally related to treatment / all
    0 / 1
    1 / 2
    0 / 1
    Soft Tissue Infection
         subjects affected / exposed
    0 / 159 (0.00%)
    1 / 173 (0.58%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    1 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Staphylococcal Sepsis
         subjects affected / exposed
    0 / 159 (0.00%)
    1 / 173 (0.58%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Systemic Bacterial Infection
         subjects affected / exposed
    0 / 159 (0.00%)
    2 / 173 (1.16%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 2
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Systemic Candida
         subjects affected / exposed
    0 / 159 (0.00%)
    2 / 173 (1.16%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    2 / 2
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Tracheobronchitis
         subjects affected / exposed
    0 / 159 (0.00%)
    1 / 173 (0.58%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    1 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Metabolism and nutrition disorders
    Hyperkalaemia
         subjects affected / exposed
    0 / 159 (0.00%)
    1 / 173 (0.58%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Hypertriglyceridaemia
         subjects affected / exposed
    0 / 159 (0.00%)
    1 / 173 (0.58%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Hyponatraemia
         subjects affected / exposed
    0 / 159 (0.00%)
    1 / 173 (0.58%)
    0 / 84 (0.00%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    0 / 0
    Frequency threshold for reporting non-serious adverse events: 5%
    Non-serious adverse events
    Sarilumab 200 mg Sarilumab 400 mg Placebo
    Total subjects affected by non serious adverse events
         subjects affected / exposed
    57 / 159 (35.85%)
    68 / 173 (39.31%)
    14 / 84 (16.67%)
    Investigations
    Alanine Aminotransferase Increased
         subjects affected / exposed
    48 / 159 (30.19%)
    58 / 173 (33.53%)
    14 / 84 (16.67%)
         occurrences all number
    48
    59
    14
    Aspartate Aminotransferase Increased
         subjects affected / exposed
    11 / 159 (6.92%)
    15 / 173 (8.67%)
    0 / 84 (0.00%)
         occurrences all number
    11
    16
    0
    Blood and lymphatic system disorders
    Neutropenia
         subjects affected / exposed
    11 / 159 (6.92%)
    13 / 173 (7.51%)
    0 / 84 (0.00%)
         occurrences all number
    11
    13
    0

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    Substantial protocol amendments (globally)

    Were there any global substantial amendments to the protocol? Yes
    Date
    Amendment
    26 Mar 2020
    • Clarified statistical analysis:multiplicity control. • Changed Phase 2 primary endpoint (PE):time to resolution of fever for at least 48 hours without antipyretics/until discharge, whichever was sooner. • Added Day 15 in Phase 3 PE. • Added Phase 2 & Phase 3 PE:proportion of subjects required rescue medication in 28-day period. • Screening partial to severe subjects until 100 subjects reached Day 15, later screening considered of same/greater severity. • Stratified ‘systemic‘ corticosteroids to add systemic corticosteroid use. • Modified Phase 3 sample size to re-estimate based on Phase 2 results. • Modified accrual duration to 3 months. • Clarified starting time for time-to-fever-resolution analysis in Phase 2 primary analysis. • Added cut-off of Phase 2 analyses & multiplicity control. • Inclusion criteria:clarified positive SARS-CoV-2-test. • Blood samples collection:clarified central analysis of SARS-CoV-2 viral load; not used for determining inclusion criteria. • Clarified early-discontinued subjects had to complete end of study visit, if possible. • Clarified all AEs and maximum body temperature (any time period/window) to be recorded in CRF. • Modified benefit/risk:review of safety data by data monitoring committee after dosing of 1st 12 subjects was not required prior to enrolling additional subjects. • Inclusion criterion:removed ‘fever’ in pneumonia definition. • Modified inclusion criterion:regional variability in SARS-CoV-2 testing recommendations. • Modified exclusion criterion:In opinion of Investigator, unlikely to survive after 48 hours/unlikely to remain at investigational site beyond 48 hours. • Added blinding breaking rules. • Added in rescue therapy to mitigate risk of potential lack of benefit from investigational intervention. • Changed ‘Limited Physical Examination’ to ‘Targeted Physical Examination’; added consciousness in NEWS2. • Phase 3 PE:added detailed sample size determination. • Efficacy PE:fever definition.
    08 Apr 2020
    • Changed protocol’s title: An adaptive phase 3, randomised, double-blind, placebocontrolled study assessing efficacy and safety of sarilumab for hospitalised subjects with COVID19’. • Changed primary efficacy endpoint: time to improvement of 2 points in clinical status assessment from baseline using 7-point ordinal scale. • Added key secondary efficacy endpoint: percent of subjects alive at Day 29’ and ‘proportion of subjects with 1 point improvement from baseline in clinical status assessment at Days 4, 7,15, 21, and 29 using 7-point ordinal scale’. • Removed screening of severe subjects until almost 100 subjects had reached Day 15, later screening could be considered for subjects of same/greater severity. • Added 2nd dose of study treatment, as optimal dose of sarilumab IV for subjects with severe/critical COVID-19 was unknown. • Removed and stratified severity category of multi-system organ dysfunction. • Clarified interim analysis:performed when approximately 50% of total planned number of subjects (~200) had reached Day 15 to obtain an understanding of possible drug effect in population under study. • Clarified urinalysis and urine culture results only requested if available. • Clarified exclusion criterion:subjects requiring extracorporeal life support, vasopressors/renal replacement therapy were excluded. • Removed sarilumab as rescue therapy. • Clarified rescue therapy could be given 48 hours after last infusion. • Defined infusion related reactions: any signs or symptoms experienced by subjects who received IMP within 24 hours of the start of infusion. • Modified SAE definition as ‘Requires a “new” inpatient hospitalisation/prolongation of existing hospitalisation’. • Added medically important events intended to serve as guideline for determining medically important event. • Corrected protocol amendment: use of immunosuppressive therapy following infusion of study drug, besides corticosteroids and anti-malarial medication.
    29 Apr 2020
    • Removed requirement in the Synopsis and clinical Laboratory tests that the interim analysis required data up to Day 15. • Clarified that pharmacokinetic sample collection for Day 2 and Day 3. • Removed ‘optional’ for the serum sIL-6R in footnote 24 of the schedule of activities. • Changed ‘multisystem organ dysfunction’ to ‘multi-organ dysfunction’ (Benefit/Risk Assessment) to align with the publication where it is described. • Clarified that IDMC would actively monitor interim data, and also make recommendations pertaining to the eligible population throughout the course of the study. • Removed use of vasopressors as a factor to be considered for selection criterion as vasopressors were also used by critical subjects and not primarily subjects with multiorgan disease (who are excluded). • Clarified the scope of adaptations that the Sponsor could make based on the interim analysis results.
    11 Jun 2020
    • Closed enrollment to the sarilumab 200 mg IV arm. • Clarified that no changes in urinalysis and urine culture results, serum IL-6, and AEs were made to the collection schedule. • Modified exclusion criterion to clarify that oral corticosteroids were a type of systemic corticosteroids. • Removed the following bullet point (Definition of AE) as it was duplicated in error: “Lack of efficacy” or “failure of expected pharmacological action” per se will not be reported as an AE or SAE. Such instances will be captured in the efficacy assessments. However, the signs, symptoms, and/or clinical sequelae resulting from lack of efficacy will be reported as AE or SAE if they fulfil the definition of an AE or SAE. • Removed following bullet point (Definition of AE) as the information was contradictory to that of a previous bullet point: The signs, symptoms, and/or clinical sequelae resulting from lack of efficacy will be reported as AE or SAE if they fulfil the definition of an AE or SAE. Also, “lack of efficacy” or “failure of expected pharmacological action” also constituted an AE or SAE. • Added tables for assessment of intensity for infusion related reactions, hypersensitivity reactions, and neutropenia (recording and follow-up of AE and/or SAE) to provide guidance to the Investigator. • Added guidance for the follow-up of AESIs of ALT increase and Grade 4 Neutropenia (recording and follow-up of AE and/or SAE) to provide guidance to the Investigator.

    Interruptions (globally)

    Were there any global interruptions to the trial? No

    Limitations and caveats

    Limitations of the trial such as small numbers of subjects analysed or technical problems leading to unreliable data.
    None reported
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