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. 2021 Nov 15;112:106625. doi: 10.1016/j.cct.2021.106625

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© 2021 The Authors

Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.

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Fig. 2 — COVID-19 platform trial initiation from January 2020 through May 2021. Trial status is shown as classified in ClinicalTrials.gov. A completed trial is one where the final data collection for the primary endpoint has been done for all enrolled participants. None of the four completed trials (ACTT-1, ACTT-2, ACTT-3, and NCT04328961) showed evidence of having added any treatment arms.