Sanofi arthritis drug Kevzara fails as COVID-19 treatment

Sept. 1, 2020

Sanofi announced that its rheumatoid arthritis drug Kevzara has failed as a COVID-19 treatment.

The global Phase 3 trial investigating intravenously administered Kevzara at a dose of 200 mg or 400 mga in severely or critically illb patients hospitalized with COVID-19 did not meet its primary endpoint and key secondary endpointc when Kevzara was compared to placebo added to usual hospital care. The 420-patient randomized trial was conducted outside the U.S. in Argentina, Brazil, Canada, Chile, France, Germany, Israel, Italy, Japan, Russia and Spain. Patient were 86 in placebo, 161 in 200 mg, and 173 in 400 mg arms.

“Although this trial did not yield the results we hoped for, we are proud of the work that was achieved by the team to further our understanding of the potential use of Kevzara for the treatment of COVID-19,” said John Reed, global head of research and development, Sanofi. "In times like these, commitment to properly designed, controlled clinical trials, provides the information and understanding the scientific community needs for fact-based decision making. At Sanofi, we are committed to help combat the global COVID-19 pandemic, including developing vaccine candidates that can be manufactured at large-scale."

Serious adverse events were experienced by 26-29% of Kevzara patients and 24% of placebo patients. The incidence of adverse events leading to death was approximately 10% in all three treatment arms. Serious infections (including COVID-19 pneumonia) were observed in 11-13% of Kevzara patients and 12% of placebo patients.

Detailed results will be submitted to a peer-reviewed publication later this year. At this time, Sanofi and Regeneron do not anticipate conducting further clinical studies for Kevzara in COVID-19.

Read the full Sanofi release