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Old 07-01-2011, 09:24 PM   #4
gdpawel
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Iniparib setback?

Sanofi-aventis and its subsidiary, BiPar Sciences, announced on January 27th that a randomized Phase III trial evaluating iniparib (BSI-201) in patients with metastatic triple-negative breast cancer (mTNBC) did not meet the pre-specified criteria for significance for co-primary endpoints of overall survival and progression-free survival.

Importantly, the results of a pre-specified analysis in patients treated in the second- and third-line setting demonstrate an improvement in overall survival and progression-free survival, consistent with what was seen in the Phase II study. The overall safety analysis indicates that the addition of iniparib (BSI-201) did not significantly add to the toxicity profile of gemcitabine and carboplatin.

"While this trial did not meet its primary goal, we believe that the improvement in overall survival and progression-free survival in patients in the second- and third-line setting are important findings," said Dr. Debasish Roychowdhury, Senior Vice President and Head of sanofi-aventis Oncology. "We are conducting in-depth analysis to gain further insight into these Phase III results. Sanofi-aventis remains committed to improving outcomes for patients with triple-negative breast cancer where there is high unmet medical need."

Sanofi-aventis plans to discuss these data with United States and European health authorities in the near future. Full study results will be presented at an upcoming major oncology conference. Patients with questions are encouraged to consult with their treating physicians, or call 1-800-633-1610. The current clinical development program for iniparib (BSI-201) continues in breast, lung and other cancers.

The study enrolled 519 women with mTNBC from 109 sites in the United States. Patients were randomized to receive a standard chemotherapy regimen (gemcitabine and carboplatin) on days one and eight of each 21-day cycle, with or without iniparib (BSI-201) 5.6 mg/kg, which was administered on days one, four, eight and 11 of each 21-day cycle. Patients in the study had received up to two previous lines of chemotherapy in a metastatic setting. The co-primary endpoints were overall survival and progression-free survival.

Iniparib (BSI-201) is a novel investigational anti-tumor agent with poly (ADP-ribose) polymerase (PARP) inhibitory activity in preclinical models. Iniparib (BSI-201) is in Phase III trials for patients with squamous non-small cell lung cancer, as well as in Phase II trials for patients with breast, lung and other cancers. Iniparib is the United States Adopted Name (USAN) for the investigational agent BSI-201.

Source: BiPar Sciences
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