Exelixis, Inc. Announces Presentation of Updated Phase 2 Data for Cabozantinib in Men With Heavily-Pretreated Metastatic Castration-Resistant Prostate Cancer

Published: Jun 03, 2013

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SOUTH SAN FRANCISCO, Calif.--(BUSINESS WIRE)--Exelixis, Inc. (NASDAQ:EXEL) today announced the presentation of updated interim data from 144 docetaxel-pretreated patients with metastatic castration-resistant prostate cancer (mCRPC) and bone metastases treated with cabozantinib in an ongoing non-randomized expansion (NRE) cohort of its phase 2 randomized discontinuation trial. Median overall survival was 10.8 months in a patient population in which 73% of patients had received two or more prior therapies including docetaxel and abiraterone, enzalutamide, and/or cabazitaxel. Furthermore, a retrospective analysis of the interim data shows that early responses in bone scan, circulating tumor cell (CTC) levels, and pain are associated with longer median overall survival (OS) as compared to non-responders. These post hoc findings, particularly the bone scan response results, support the rationale for potential future prospective validation of the association of bone scan response with OS in Exelixis’ ongoing phase 3 COMET trials in mCRPC. Howard I. Scher, M.D., Chief of the Genitourinary Oncology Service at Memorial Sloan-Kettering Cancer Center and a principal investigator on the study, presented the data today in a poster-discussion session at the 2013 Annual Meeting of the American Society of Clinical Oncology (ASCO) (Abstract #5026), in Chicago, Illinois.

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