Clinical Trial Results
In the third quarter of 2007, we announced positive interim results from our U.K. Phase Ia/Ib combination REOLYSIN(R) and radiation clinical trial for patients with advanced or metastatic cancers. As of September 28, 2007, 22 patients had 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 have 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 target tumour, as well as stable disease in two, non-treated tumours at one, two and three months post treatment. The squamous cell scalp patient experienced stable disease in the target tumour for two months which then became a partial response at three months. This patient also experienced stable disease in one non-treated tumour measured at three months post-treatment.
Patients in the Ib portion received either two, four or six
intratumoural doses of REOLYSIN(R) at 1x1
|SOURCE Oncolytics Biotech Inc.|
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