( GAITHERSBURG Md.--(BUSINESS WIRE)--Jun...)GenVec Announces Update of Safety and Efficacy Data from Pivotal,Phase II/III PACT Study of TNFerade at ASCO,Health

GAITHERSBURG, Md.--(BUSINESS WIRE)--Jun 4, 2007 - GenVec, Inc. (Nasdaq: GNVC) announced today that updated preliminary safety and efficacy data from the clinical development program of its lead product TNFerade(TM) was presented in a poster session on gastrointestinal cancers at the annual meeting of American Society for Clinical Oncology in Chicago, IL by Dr. Mitchell Posner, of the University of Chicago. An oral discussion of the posters then concluded the Saturday morning viewing session.

The poster presentation, Multi-Center, Phase 2/3, Randomized, Controlled Clinical Trial using TNFerade(TM) Gene Delivery Combined with Chemoradiation in Patients with Locally Advanced Pancreatic Cancer (LAPC), covered the most recent data from GenVec's Pancreatic Cancer Clinical Trial, known as the PACT study. This multi-center, randomized and controlled trial will evaluate the safety and efficacy of TNFerade plus standard of care, versus standard of care alone, in 330 subjects with locally advanced pancreatic cancer. The study is powered to detect a 20% absolute increase in the primary efficacy endpoint (12 month survival) compared to standard of care (SOC) chemoradiation. Patients are randomized in a 2:1 ratio to TNFerade plus standard therapy, or standard therapy alone.

Data presented included information from a planned interim analysis of results based on the first 51 patients treated with TNFerade, as well as a risk/benefit assessment performed in conjunction with evaluating the merits of resuming the option of administration of the agent by endoscopic ultrasound (EUS). Secondary outcome measures of overall survival, objective response, resections and other lab parameters were included. No analysis was performed on the primary efficacy endpoint (12 month survival).

Regarding Overall Survival, median survival was 19.3 months for patients in the TNFerade + SOC arm versus 11.1 months for patients receiving s
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