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Clinical Trial Summary

The trial will develop and validate a platform for quantitative assessment of antiviral effects in low-risk patients with high viral burdens and uncomplicated COVID-19 to determine in-vivo antiviral activity. In this randomized open label, controlled, group sequential adaptive platform trial, we will assess the performance of three distinct types of intervention relative to control (no treatment): A: Small molecule drugs; B: Monoclonal antibodies PLATCOV study is supported by the Wellcome Trust Grant ref: 223195/Z/21/Z through the COVID-19 Therapeutics Accelerator.


Clinical Trial Description

The platform trial will assess drugs with potential SARS-CoV-2 antiviral Activity of two general types: A. Small molecule drugs: currently nitazoxanide, molnupiravir, nirmatrelvir/ritonavir, ensitrelvir, a combination of molnupiravir and nirmatrelvir/ritonavir, and hydroxychloroquine Newly available and repurposed drugs are already used and recommended in some countries. Showing that they do not have significant antiviral activity is as important as showing that they do. For the newly approved antivirals, comparing antiviral activities in- vivo will inform health authorities' recommendations. B. Monoclonal antibodies: Sotrovimab and any other monoclonal antibodies that become available. Monoclonal antibodies are vulnerable to viral escape mutations. Tracking their performance over time is important to characterise the impact and inform the therapeutics of mutant SARS-CoV-2 strains. This will also be important for other antivirals. Monoclonal antibodies are expensive and cannot be produced at large scale currently, but this may change in the near future. These drugs will be included if there is local availability and regulatory approval. Randomization to the no antiviral treatment control arm (no intervention) will be fixed at a minimum of 20% throughout the study. The randomization ratios will be uniform for all available interventions. Recruitment into the ivermectin arm was stopped on April 18th 2022 due to meeting the pre- defined stopping criteria. Recruitment into the remdesivir arm was stopped on June 10th 2022 due to meeting the pre- defined stopping criteria. Recruitment into the REGN-COV2 arm was stopped on October 20th 2022 due to meeting the pre-defined stopping criteria. Recruitment into the favipiravir arm was stopped on October 31st 2022 due to meeting the pre-defined stopping criteria. Recruitment into the molnupiravir arm was stopped on February 22nd 2023 due to meeting the pre-defined stopping criteria. Recruitment into the fluoxetine arm was stopped on May 8th 2023 due to meeting the pre-defined stopping criteria. Recruitment into the evusheld arm was stopped on July 4th 2023 due to meeting the pre-defined stopping criteria. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05041907
Study type Interventional
Source University of Oxford
Contact William Schilling, MD
Phone +662 203 6333
Email william@tropmedres.ac
Status Recruiting
Phase Phase 2
Start date September 30, 2021
Completion date January 2027

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