Oncolytics Biotech Inc. Reports Positive Interim Results of U.K. Phase Ia/Ib Combination REOLYSIN(R) and Radiation Clin...( CALGARY Sept. 28 / Oncolytics Bio...)

CALGARY, Sept. 28 /PRNewswire-FirstCall/ - Oncolytics Biotech Inc. ("Oncolytics") (TSX:ONC, NASDAQ:ONCY) today announced that an oral presentation covering interim results from a U.K. Phase Ia/Ib combination REOLYSIN(R) and radiation clinical trial for patients with advanced or metastatic cancers is scheduled to be presented at the National Cancer Research Institute (NCRI) conference on October 2, 2007 in Birmingham, U.K. The presentation, entitled "Biological Approaches to Radiosensitisation: Viruses, Gene Therapy and Novel Radiosensitisers" will be presented by Dr. Kevin Harrington of The Institute of Cancer Research, London and one of the principal investigators for the trial. The conference runs from September 30 through October 3, 2007 in Birmingham, U.K.

"We are very pleased with the results of this trial to date," said Dr. Brad Thompson, President and CEO of Oncolytics. "We continue to evaluate the data and look forward to announcing final results."

To date, 22 patients have been treated with 15 having completed the study. Five patients withdrew from the study, and two patients are still on study.

A total of 11 patients in the Ia portion of the trial received two intratumoural treatments of REOLYSIN(R) at dosages of 1x10(8), 1x10(9), or 1x10(10) TCID(50) with a constant localized radiation dose of 20 Gy given in five fractions. Of these 11 patients, three patients (oesophageal, squamous skin carcinoma and squamous cell scalp) experienced significant partial responses.

One month following treatment, the oesophageal patient experienced a 28.5% reduction in the target tumour, with stable disease noted in four, non-treated tumours. At two and three months, the target tumour had shrunk 64%, with stable disease continuing in the four non-treated tumours, including a 15% volume reduction in non-treated mediastinal disease that was maintained for more than six months. The squamous skin cancer patient experienced a 50% reduction in the t
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