Study behind Tavneos approval retracted by NEJM FirstWord PharmaMedical journal retracts paper on Amgen’s Tavneos drug trial after FDA findings ReutersNEJM retracts pivotal data for Amgen’s Tavneos Endpoints NewsEuropean Regulator Calls for Amgen’s Tavneos to Have Authorization Revoked WSJAmgen Drug Tavneos’ Main Study Retracted by Medical Journal Bloomberg.com