FDA seeks to withdraw avacopan approval over alleged data manipulation, false statements

The FDA has proposed to withdraw its approval of avacopan for ANCA-associated vasculitis, alleging that employees of the original manufacturer, ChemoCentryx, manipulated data in the sole trial used to assess the drug’s efficacy. In a letter to Amgen, which acquired avacopan (Tavneos) in its 2022 purchase of ChemoCentryx, Tracy Beth Høeg, MD, PhD, acting director of the FDA Center for Drug

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