SAN ANTONIO--(BUSINESS WIRE)--Genentech, Inc., a wholly owned member of the Roche Group (SIX: RO, ROG; OTCQX: RHHBY), today announced positive results from a Phase II study of trastuzumab-DM1 (T-DM1). As assessed by independent review, T-DM1 shrank the tumors (also known as objective response) in 33 percent of women with advanced (metastatic) HER2-positive breast cancer that had worsened following previous treatment. Women in the study had already received an average of seven drugs for metastatic disease, including chemotherapy, trastuzumab and lapatinib, prior to receiving T-DM1. No new or unexpected safety signals were observed. Results were presented today at the 32nd Annual San Antonio Breast Cancer Symposium (Abstract #710).
