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. 2020 Sep 21;145:111767. doi: 10.1016/j.fct.2020.111767

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© 2020 Elsevier Ltd. All rights reserved.

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 — Overview of ongoing drugs in COVID-19 clinical trials (as of April 21, 2020). Drugs are classified by the Anatomical Therapeutic Chemical Classification (ATC) code and clinical trial phase. The ATC label, number of drugs and percentage of each drug classification are presented on the outer circle. The four different levels from internal to external represent the corresponding drugs in phase 1, phase 2, phase 3 and phase 4 of COVID-19 clinical trials, respectively. The high-resolution version is provided in the Supporting Information.