(Reuters)—Sanofi SA and partner Regeneron Pharmaceuticals Inc. have started a clinical trial of their rheumatoid arthritis drug Kevzara (sarilumab) as a treatment for the coronavirus, the companies said on Monday.
Enrolments for the mid-to-late stage trial will begin immediately, and the companies anticipate the trial will test up to 400 patients.
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Sarilumab is an infection-fighting protein known as monoclonal antibody.
Regeneron in February announced a partnership with the U.S. Department of Health and Human Services to develop a coronavirus treatment and had said it would focus on monoclonal antibodies.