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Harmless human virus may be able to boost the effects of chemotherapy
Date:4/3/2012

A naturally-occurring harmless human virus may be able to boost the effects of two standard chemotherapy drugs in some cancer patients, according to early stage trial data published in Clinical Cancer Research.

The paper titled: Phase I/II trial of carboplatin and paclitaxel chemotherapy in combination with intravenous oncolytic reovirus in patients with advanced malignancies with first author Eleni M. Karapanagiotou from the ICR and The Royal Marsden was published in the print edition of Clinical Cancer Research on April 1.

RT3D, trade name Reolysin, is a new drug developed by Oncolytics Biotech Inc with preclinical and clinical studies conducted at The Institute of Cancer Research (ICR) and The Royal Marsden Hospital. It is based on a virus (reovirus type 3 Dearing) that is found in almost all adults' respiratory and gastrointestinal tracts without causing any symptoms.

RT3D has the ability to grow in and kill certain types of cancer cells, but does not grow in normal cells.

Previous trials injecting patients with the virus on its own showed limited effectiveness, but the team found that RT3D appeared to magnify the effects of platin and taxane-based chemotherapy on tumour cells.

Dr Kevin Harrington and colleagues in Leeds therefore started a clinical trial testing intravenous RT3D in combination with chemotherapeutics carboplatin and paclitaxel in 31 patients with advanced cancers who had stopped responding to standard treatments.

An initial Phase I study was carried out in patients with a range of advanced cancers, which showed the drug combination was safe. Side-effects were found to be generally mild, and consistent with chemotherapy alone.

Patients with head and neck cancers were found to have the best responses, so a Phase II expansion study at The Royal Marsden Hospital, London, and St James's Hospital, Leeds, was therefore targeted to patients with these types of cancers.


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Contact: Janet Vasquez
jvasquez@investorrelationsgroup.com
212-825-3210
Oncolytics Biotech Inc.
Source:Eurekalert

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