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Renal Cell Cancer

February 25, 2013

Argos Therapeutics reported results from a phase II trial of AGS-003 for metastatic renal cell carcinoma (mRCC). This open-label study enrolled 21 patients with unfavorable risk mRCC and with an expected survival of approximately 15 months. Subjects received standard six-week cycles of sunitinib plus AGS-003, administered every three weeks for five doses, and then every 12 weeks until progression. Results showed median overall survival was 30.2 months. When analyzed by baseline Heng risk status, the median overall survival for intermediate risk patients (n=11) has not been reached, but is estimated to be longer than 39.5 months with continued follow-up. Median overall survival for poor risk patients (n=10) was 9.1 months. Of the 21 patients who participated in the study, seven (33%) patients are still alive after nearly four years or longer following study registration. Argos Therapeutics is currently enrolling patients in a global phase III study of AGS-003.

February 18, 2013

AVEO Oncology and Astellas Pharma reported results from a phase III trial of tivozanib compared to sorafenib for the treatment of advanced renal cell carcinoma (RCC). This global, randomized study, TIVO-1, enrolled 517 patients with RCC. Subjects received either tivozanib or sorafenib. The final overall survival (OS) analysis showed a median OS of 28.8 months (95% confidence interval [CI]: 22.5–NA) for tivozanib versus a median OS of 29.3 months (95% CI: 29.3–NA) for the comparator arm, sorafenib. No statistical difference between the two arms (HR=1.245, p=0.105) was observed. Patients randomized to the sorafenib arm were eligible to cross over to tivozanib therapy under a separate protocol after radiographic confirmation of disease progression. No crossover protocol was available for patients randomized to the tivozanib arm. Tivozanib was well tolerated. Based on these data, AVEO and Astellas have filed a New Drug Application (NDA) for tivozanib for the treatment of RCC.

October 16, 2006

Immatic's reported positive results from a phase I trial of IMA901, a renal cell cancer vaccine. This trial enrolled 28 subjects across six centers in Germany, the United Kingdom and Switzerland. Treatment was safe and well tolerated. Efficacy data revealed that 70% of the treated subjects displayed immune responses against tumor-associated antigens included in the IMA901 vaccine. This formation of immune responses against multiple targets correlated significantly with a stabilization of the disease and a decline in the tumor burden identified prior to commencement of the treatment (p<0.05). Based on these results Immatic's plans to initiate phase II trials by early 2007.