Treatments for COVID-19: Canadian Arm of the SOLIDARITY Trial (CATCO)
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ClinicalTrials.gov Identifier: NCT04330690 |
Recruitment Status :
Recruiting
First Posted : April 1, 2020
Last Update Posted : November 30, 2020
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This study is an adaptive, randomized, open-label, controlled clinical trial, in collaboration with countries around the world through the World Health Organization.
Subjects will be randomized to receive either standard-of-care products or the study medication plus supportive care, while being hospitalized for COVID-19.
Participants will be randomized to one of the following groups:
- Remdesivir 200mg IV on day 1, followed by 100 mg IV daily infusion for 9 days plus optimized supportive care, OR
- Interferon-beta-1a, 22 or 44 micrograms subcutaneously on days 1, 3 and 6, plus optimized supportive care OR
- Optimized support care, all or until discharge from hospital, whichever occurs first
Condition or disease | Intervention/treatment | Phase |
---|---|---|
COVID-19 | Drug: Interferon beta-1a Drug: Remdesivir | Phase 2 |
This study is an adaptive, randomized, open-label, controlled clinical trial, in collaboration with countries around the world through the World Health Organization.
Subjects will be randomized to receive either standard-of-care products or the study medication plus standard of care, while being hospitalized for COVID-19.
Participants will be randomized to one of the following groups:
- Remdesivir 200mg IV on day 1, followed by 100 mg IV daily infusion for 9 days plus optimized supportive care, OR
- Interferon-beta-1a, 22 or 44 micrograms subcutaneously on days 1, 3 and 6, plus optimized supportive care OR
- Optimized support care, all or until discharge from hospital, whichever occurs first
Subjects will be assessed daily while hospitalized, including Oropharyngeal (OP) / Nasopharyngeal (NP) swabbing at baseline and on days post enrolment 3, 5, 8, 11, 15 and 29 (if still hospitalized, exploratory outcome). Hospitalized subjects will require blood sampling on days 1 and 5. Discharged subjects will be telephoned at Days 15, 29, and 60.
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 2900 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Intervention Model Description: | 3-arms in a 1:1:1 ratio randomization to either the control arm, consisting of standard supportive care treatment for COVID-19, or remdesivir plus standard supportive care or Interferon-beta-1a plus standard supportive care. This study is intended to allow for multiple adaptations, including: i) the primary endpoint at the first interim analysis, based on performance characteristics, both in its characteristics and its timepoint, with adapted sample size calculations performed for the new primary endpoints; ii) Intervention arm, with emerging data from both internal and external to the trial, with arms being dropped or added based on pre-specified stopping rules in conjunction with the DSMB. |
Masking: | None (Open Label) |
Masking Description: | Endpoint assessment |
Primary Purpose: | Treatment |
Official Title: | A Multi-centre, Adaptive, Randomized, Open-label, Controlled Clinical Trial of the Safety and Efficacy of Investigational Therapeutics for the Treatment of COVID-19 in Hospitalized Patients (CATCO: Canadian Treatments for COVID-19), in Conjunction With the Public Health Emergency SOLIDARITY Trial (World Health Organization) |
Actual Study Start Date : | March 18, 2020 |
Estimated Primary Completion Date : | March 18, 2022 |
Estimated Study Completion Date : | May 18, 2022 |

Arm | Intervention/treatment |
---|---|
No Intervention: Control
This arm will receive standard supportive care guidelines for COVID-19. This is expected the vary regionally and may change throughout the trial based on new and emerging data on best care guidelines for patients.
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Experimental: Remdesivir plus standard supportive care
Remdesivir 200mg IV on day 1, followed by 100 mg IV daily infusion for 9 days plus optimized supportive care
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Drug: Remdesivir
Remdesivir 200mg IV on day 1, followed by 100 mg IV daily infusion for 9 days plus optimized supportive care or until discharge from hospital, whichever occurs first |
Experimental: Interferon plus standard supportive care
Interferon-beta-1a, 22 or 44 micrograms subcutaneously on days 1, 3 and 6, plus optimized supportive care
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Drug: Interferon beta-1a
Interferon beta-1a containing 22 or 44 micrograms syringes will be administered subcutaneously on days 1, 3, 6. |
- Efficacy of Interventions as assessed by all-cause mortality [ Time Frame: 29 days ]All-cause mortality, assessed at hospital discharge.
- Time to improvement of one category from admission [ Time Frame: up to 60 days ]Measure with Ordinal Scale the time it takes for subject improvement
- Subject clinical status [ Time Frame: up to 60 days ]
Subject clinical status at days 3, 5, 8, 11, 15, 29, 60 or at discharge measured using the ordinal scale below:
The scale is as below 0: Uninfected, no viral RNA
- Asymptomatic, viral RNA detected
- Symptomatic, independent
- Symptomatic, Assistance Needed
- Hospitalized: no oxygen therapy
- Hospitalized, on oxygen
- Hospitalized, Oxygen by NIV or high-flow
- Mechanical ventilation, p/f>150 or s/f >200
- Mechanical ventilation, p/f<150 or s/f<200 OR vasopressors
- mechanical ventilation, p/f<150 AND vasopressors, dialysis, or ECMO
- death
- Change in Subject clinical status [ Time Frame: up to 60 days ]
Mean change in the ranking from baseline to days 3, 5, 8, 11, 15, 29, 60 or at discharge using the ordinal scale below:
The scale is as below 0: Uninfected, no viral RNA
- Asymptomatic, viral RNA detected
- Symptomatic, independent
- Symptomatic, Assistance Needed
- Hospitalized: no oxygen therapy
- Hospitalized, on oxygen
- Hospitalized, Oxygen by NIV or high-flow
- Mechanical ventilation, p/f>150 or s/f >200
- Mechanical ventilation, p/f<150 or s/f<200 OR vasopressors
- mechanical ventilation, p/f<150 AND vasopressors, dialysis, or ECMO
- death
- Oxygen free days [ Time Frame: up to 29 days ]the number of oxygen free days experienced
- Incidence of oxygen use [ Time Frame: up to 29 days ]if the subject required oxygen during hospitalization
- Duration of oxygen use [ Time Frame: up to 29 days ]if the subject required oxygen, for how long was it required
- Incidence of new mechanical ventilation [ Time Frame: up to 29 days ]if the subject required mechanical ventilation during hospitalization
- Duration of mechanical ventilation [ Time Frame: up to 29 days ]if the subject required mechanical ventilation, for how long was it required
- Duration of hospitalization [ Time Frame: up to 60 days ]the length of hospitalization required
- Mortality [ Time Frame: up to 60 days ]Mortality rates calculated at day 15, 29, 60 days or at discharge
- Cumulative Incidence of Grade 3 and 4 Adverse Events (AEs) and Serious Adverse Events (SAEs) [ Time Frame: up to 30 days after last dose of drug adminstration ]The safety of the intervention will be evaluated during the trial period as compared to the control arm as assessed by the cumulative incidence of Grade 3 and 4 AEs and SAEs using the Division of AIDS (DAIDS) Table for Grading the Severity of Adult and Paediatric Adverse Events, version 2.1 (July 2017).
- Time to viral clearance of lopinavir/ritonavir as compared to the control arm [ Time Frame: up to 29 days ]To evaluate the virologic efficacy of remdesivir and interferon-beta-1a as compared to the control arm as assessed by the percent of subjects with SARS-CoV-2 detectable in OP/NP sample at days 3, 5, 8, 11, 15, and 29

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Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- ≥ 18 years of age
- Has laboratory-confirmed SARS-CoV-2 infection as determined by PCR, or other commercial or public health assay in any specimen prior to randomization.
- Hospitalized at a participating centre
Exclusion Criteria:
- Anticipated transfer to another hospital, within 72 hours, which is not a study site
- Expected to not survive beyond 24 hours
- Known allergy to study medication or its components (non-medicinal ingredients)
- Receiving one of the study drugs at time of enrolment

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04330690
Contact: Srinivas Murthy, MD | (604) 875-2778 | srinivas.murthy@cw.bc.ca | |
Contact: Gail Klein | 416-480-5632 | CATCO@sunnybrook.ca |

Study Director: | Vaseeharan Sathiyamoorthy | World Health Organization |
Responsible Party: | Sunnybrook Health Sciences Centre |
ClinicalTrials.gov Identifier: | NCT04330690 |
Other Study ID Numbers: |
2114 |
First Posted: | April 1, 2020 Key Record Dates |
Last Update Posted: | November 30, 2020 |
Last Verified: | November 2020 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | Yes |
Plan Description: | As per World Health Organization policies on data sharing in a Public Health Emergency, any clinical trial outcome data will be shared at the earliest possible opportunity. In addition, given the nature of this protocol, being performed across regions, the DSMB may access other regions trials, and possibly recommend alterations in study design based on accumulating data, through a centralized data repository being built under the auspices of the World Health Organization. Data Sharing for Secondary Research Data from this study may be used for secondary research. All of the individual subject data collected during the trial will be made available after de-identification through expert determination. The SAP and Analytic Code will also be made available. This data will be available immediately following publication, with no end date, as part of data sharing requirements from journals and funding agencies. |
Supporting Materials: |
Study Protocol Statistical Analysis Plan (SAP) Clinical Study Report (CSR) |
Time Frame: | Unknown and variable |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |
Remdesivir Interferon-beta-1a |
Interferons Interferon-beta Interferon beta-1a Antineoplastic Agents Antiviral Agents |
Anti-Infective Agents Immunologic Factors Physiological Effects of Drugs Adjuvants, Immunologic |