PRINCETON, N.J. & TOKYO & WALTHAM, Mass.--(BUSINESS WIRE)--Otsuka Pharmaceutical Development & Commercialization, Inc., (OPDC); Otsuka Pharmaceutical, Co. Ltd. (Otsuka); and Visterra, Inc., an Otsuka group company announce that the U.S. Food and Drug Administration (FDA) has granted Breakthrough Therapy designat...