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Home Treatment of Older People with Symptomatic SARS-CoV-2 Infection (COVID-19): A structured Summary of a Study Protocol for a Multi-Arm Multi-Stage (MAMS) Randomized Trial to Evaluate the Efficacy and Tolerability of Several Experimental Treatments to Reduce the Risk of Hospitalisation or Death in outpatients aged 65 years or older (COVERAGE trial)



To assess the efficacy of several repurposed drugs to prevent hospitalisation or death in patients aged 65 or more with recent symptomatic SARS-CoV-2 infection (COVID-19) and no criteria for hospitalisation.

Trial design

Phase III, multi-arm (5) and multi-stage (MAMS), randomized, open-label controlled superiority trial.

Participants will be randomly allocated 1:1:1:1:1 to the following strategies:

  • Arm 1: Control arm

  • Arms 2 to 5: Experimental treatment arms

Planned interim analyses will be conducted at regular intervals. Their results will be reviewed by an Independent Data and Safety Monitoring Board. Experimental arms may be terminated for futility, efficacy or toxicity before the end of the trial. New experimental arms may be added if new evidence suggests that other treatments should be tested.

A feasibility and acceptability substudy as well as an immunological substudy will be conducted alongside the trial.


Inclusion criteria are: 65-year-old or more; Positive test for SARS-CoV-2 on a nasopharyngeal swab; Symptoms onset within 3 days before diagnosis; No hospitalisation criteria; Signed informed consent; Health insurance.

Exclusion criteria are: Inability to make an informed decision to participate (e.g.: dementia, guardianship); Rockwood Clinical Frailty Scale ≥7; Long QT syndrome; QTc interval > 500 ms; Heart rate <50/min; Kalaemia >5.5 mmol/L or <3.5 mmol/L; Ongoing treatment with piperaquine, halofantrine, dasatinib, nilotinib, hydroxyzine, domperidone, citalopram, escitalopram, potent inhibitors or inducers of cytochrome P450 CYP3A4 isoenzyme, repaglinide, azathioprine, 6-mercaptopurine, theophylline, pyrazinamide, warfarin; Known hypersensitivity to any of the trial drugs or to chloroquine and other 4-aminoquinolines, amodiaquine, mefloquine, glafenine, floctafenine, antrafenine, ARB; Hepatic porphyria; Liver failure (Child-Pugh stage ≥B); Stage 4 or 5 chronic kidney disease (GFR <30 mL/min/1.73 m²); Dialysis; Hypersentivity to lactose; Lactase deficiency; Abnormalities in galactose metabolism; Malabsorption syndrome; Glucose-6-phosphate dehydrogenase deficiency; Symptomatic hyperuricemia; Ileus; Colitis; Enterocolitis; Chronic hepatitis B virus disease.

The trial is being conducted in France in the Bordeaux, Corse, Dijon, Nancy, Paris and Toulouse areas as well as in the Grand Duchy of Luxembourg. Participants are recruited either at home, nursing homes, general practices, primary care centres or hospital outpatient consultations.

Intervention and comparator

The four experimental treatments planned in protocol version 1.2 (April 8th, 2020) are: (1) Hydroxychloroquine 200 mg, 2 tablets BID on day 0, 2 tablets QD from day 1 to 9; (2) Imatinib 400 mg, 1 tablet QD from day 0 to 9; (3) Favipiravir 200 mg, 12 tablets BID on day 0, 6 tablets BID from day 1 to 9; (4) Telmisartan 20 mg, 1 tablet QD from day 0 to 9.

The comparator is a complex of vitamins and trace elements (AZINC Forme et Vitalité®), 1 capsule BID for 10 days, for which there is no reason to believe that they are active on the virus.

In protocol version 1.2 (April 8th, 2020): People in the control arm will receive a combination of vitamins and trace elements; people in the experimental arms will receive hydroxychloroquine, or favipiravir, or imatinib, or telmisartan.

Main outcome

The primary outcome is the proportion of participants with an incidence of hospitalisation and/or death between inclusion and day 14 in each arm.


Participants are randomized in a 1:1:1:1:1 ratio to each arm using a web-based randomisation tool. Participants not treated with an ARB or ACEI prior to enrolment are randomized to receive the comparator or one of the four experimental drugs. Participants already treated with an ARB or ACEI are randomized to receive the comparator or one of the experimental drugs except telmisartan (i.e.: hydroxychloroquine, imatinib, or favipiravir). Randomisation is stratified on ACEI or ARBs treatment at inclusion and on the type of residence (personal home vs. nursing home).

Blinding (masking)

This is an open-label trial. Participants, caregivers, investigators and statisticians are not blinded to group assignment.

Numbers to be randomised (sample size)

A total of 1057 participants will be enrolled if all arms are maintained until the final analysis and no additional arm is added.

Three successive futility interim analyses are planned, when the number of participants reaches 30, 60 and 102 in the control arm. Two efficacy analyses (interim n°3 and final) will be performed successively.

Trial Status

This describes the Version 1.2 (April 8th, 2020) of the COVERAGE protocol that was approved by the French regulatory authority and ethics committee. The trial was opened for enrolment on April 15th, 2020 in the Nouvelle Aquitaine region (South-West France). Given the current decline of the COVID-19 pandemic in France and its unforeseeable dynamic in the coming months, new trial sites in 5 other French regions and in Luxembourg are currently being opened. A revised version of the protocol was submitted to the regulatory authority and ethics committee on June 15th, 2020. It contains the following amendments: (i) Inclusion criteria: age ≥65 replaced by age ≥60; time since first symptoms <3 days replaced by time since first symptoms <5 days; (ii) Withdrawal of the hydroxychloroquine arm (due to external data); (iii) increase in the number of trial sites.

Trial registration

The trial was registered on Clinical on April 22nd, 2020 (Identifier: NCT04356495): and on EudraCT on April 10th, 2020 (Identifier: 2020-001435-27).

Full protocol

The full protocol is attached as an additional file, accessible from the Trials website (Additional file 1). In the interest of expediting dissemination of this material, the familiar formatting has been eliminated; this Letter serves as a summary of the key elements of the full protocol. The study protocol has been reported in accordance with the Standard Protocol Items: Recommendations for Clinical Interventional Trials (SPIRIT) guidelines (Additional file 2).

Peer Review reports

Availability of data and materials

Not applicable.


The COVERAGE trial received funding from the following sources: University of Bordeaux, Research and Action Targeting Emerging Infectious Diseases (REACTing) / Institut de la Santé et de la Recherche Médicale (INSERM), Agence Nationale de la Recherche (ANR) and the French Ministry of Health (DGOS). The immunological substudy received funding from EIT HEALTH. The funding sources had a role neither in the design of the study nor in the collection, analysis, and interpretation of data and in writing the manuscript.

Author information

Authors and Affiliations




AD, EL, TP, RO, DN, JPJ, NP, VJ, RS, LR, XA and DM designed the study and wrote the protocol. AD, EL, TP, RO, RS, VJ, DN, NP, TD, DP, LP, CB, JFM, BL, DL, JL, JD, CR, AG, LW, RT, JO, JJ, LR, XA and DM are involved in the collection, analysis and interpretation of the data. AD, EL, XA and DM wrote the manuscript. LR reviewed the manuscript for important intellectual content. All authors approved the final version before submission.

Corresponding author

Correspondence to Alexandre Duvignaud.

Ethics declarations

Ethics approval and consent to participate

The study was approved by the “Comité de Protection des Personnes Ile de France 1” ethics committee (reference CPPIDF1-2020-ND45 cat.1) on April 7th 2020, and by the French regulatory Agency, “ANSM” (reference MEDAECNAT-2020-03-00065) on April 10th 2020, as required by national regulations regarding the evaluation of experimental drugs in humans. Eligible individuals may only be included in the study after receiving full explanation, having received sufficient time to consider the trial, asking questions and receiving satisfying responses to all questions, and after providing written Ethics Committee-approved informed consent. Individuals who are not able to understand the study and to provide informed consent by themselves are not eligible to participate.

Consent for publication

Not applicable.

Competing interests

The authors declare that they have no competing interests.

Additional information

Publisher’s Note

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The entire COVERAGE study group is listed in the Additional file 3.

Supplementary information

Additional file 1.

COVERAGE trial protocol version 1.2 (April 8th 2020).

Additional file 2.

SPIRIT 2013 Checklist: Recommended items to address in a clinical trial protocol and related documents.

Additional file 3.

List of members of the COVERAGE study group.

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Duvignaud, A., Lhomme, E., Pistone, T. et al. Home Treatment of Older People with Symptomatic SARS-CoV-2 Infection (COVID-19): A structured Summary of a Study Protocol for a Multi-Arm Multi-Stage (MAMS) Randomized Trial to Evaluate the Efficacy and Tolerability of Several Experimental Treatments to Reduce the Risk of Hospitalisation or Death in outpatients aged 65 years or older (COVERAGE trial). Trials 21, 846 (2020).

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