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Table 1 Overview of industry sponsored clinical trials of IL-6 signal inhibitors for COVID-19 pneumonia

From: Outlook of IL-6 signaling blockade for COVID-19 pneumonia

Drug

Trial name

Location

Design

Patient population

and number

Primary endpoint

Tocilizumab

COVACTA

NCT04320615 [41]

Global

DB/PBO

TCZ + SOC vs PBO + SOC

Hospitalized with COVID-19 pneumonia confirmed per a positive PCR of any specimen and evidenced by chest x-ray or CT scanand SpO2 ≤ 93% or PaO2/FiO2 < 300 mmHg

450

Clinical status as per the 7-category ordinal scale at day 28

Tocilizumab

MARIPOSA

NCT04363736 [42]

US

OL

TCZ 4 mg/kg

TCZ 8 mg/kg

Hospitalization with COVID-19 pneumonia confirmed by a positive PCR of any specimen and evidenced by chest x-ray or CT

For severe patients, SpO2 ≤ 93% or PaO2/FiO2 < 300 mmHg

For moderate patients, CRP > 2 × ULN

100

PK/PD responses to tocilizumab

Tocilizumab

REMDACTA

NCT04409262 [43]

Global

DB/PBO

TCZ + RDV vs PBO + RDV

Hospitalized with COVID-19 pneumonia confirmed per a positive PCR of any specimen and evidenced by chest x-ray or CT scan and SpO2 ≤ 93% or PaO2/FiO2 < 300 mmHg or requiring supplemental oxygen to maintain SpO2 > 93%

450

Clinical status as per the 7-category ordinal scale at day 28

Tocilizumab

EMPACTA

NCT04372186 [44]

US

DB/PBO

TCZ + SOC vs PBO + SOC

Hospitalized with COVID-19 pneumonia confirmed per a positive PCR of any specimen and evidenced by chest X-ray or CT scan

Requiring more than 6 L/min supplemental oxygen to maintain SpO2 > 93%

379379

Cumulative proportion of participants requiring mechanical ventilation by day 28

Tocilizumab

JapicCTI-205270 [45]

Japan

OL

Hospitalized with COVID-19 pneumonia confirmed per a positive PCR of any specimen and evidenced by chest x-ray or CT scan and SpO2 ≤ 93% or PaO2/FiO2 < 300 mmHg

10+

Clinical status as per the 7-category ordinal scale at Day 28

Sarilumab

NCT04315298 [46]

US

DB/PBO

SARI dose1 + SOC vs SARI dose2 + SOC vs PBO + SOC

dose3 + SOC vs PBO + SOC

P2: adult patients hospitalized with COVID-19 regardless of disease severity strata

P3 cohort 1: adult patients hospitalized with critical COVID-19 on mechanical ventilation at baseline

P3 cohort 2: adult patients hospitalized with COVID-19 receiving mechanical ventilation at baseline

P3 cohort 3: adult patients hospitalized with COVID-19 receiving high-intensity oxygen therapy without mechanical ventilation at baseline.

2500

Phase 2: Percent change in CRP levels by day 4

Phase 3: Proportion of patients with at least 1-point improvement in clinical status using the 7-point ordinal scale up to day 22

Sarilumab

NCT04327388 [47]

Global

DB/PBO

SARI dose1 + SOC vs SARI dose2 + SOC vs PBO + SOC

Hospitalized for less than or equal to 7 days with evidence of pneumonia and has one of the following disease categories: severe disease or critical disease laboratory-confirmed SARS-CoV-2 infection

400

Time to improvement of 2 points in clinical status assessment from baseline using the 7-point ordinal scale up to day 29

  1. CRP C-reactive protein, DB/PBO double-blind placebo-controlled study, FiO2 fraction of inspired oxygen, OL open label, PaO2 partial pressure of oxygen in arterial blood, PBO placebo, RDV remdesivir, SARI sarilumab, SOC standard of care, SpO2 peripheral capillary oxygen saturation, TCZ tocilizumab