Kissei Pharmaceuticals announced 20 deaths related to receiving avacopan (Tavneos), a vasculitis drug sold by the firm in Japan. Drug was released in June 2022, since its been given to ~8,500 pts. Avacopan safety is being reviewed by FDA with Amgen. https://t.co/ri0nROCL5U https://t.co/jbksrWMFwI