FDA Approves Genentech’s Kadcyla (Ado-Trastuzumab Emtansine), the First Antibody-Drug Conjugate for Treating HER2-Positive Metastatic Breast Cancer New Personalized Medicine Helped People in Phase III Study Live Longer, Compared to Standard Treatment -- SOUTH SAN FRANCISCO, Calif.--(BUSINESS WIRE)-- Genentech, a member of the Roche Group (SIX: RO, ROG; OTCQX: RHHBY), today announced that the U.S. Food and Drug Administration (FDA) has approved Kadcyla™(ado-trastuzumab emtansine or T-DM1) for the treatment of people with HER2-positive metastatic breast cancer (mBC) who have received prior treatment with Herceptin® (trastuzumab) and a taxane chemotherapy. Kadcyla is the fourth medicine from Genentech to receive FDA approval for...