Data Published at ASCO Find Correlation Between ChemoFx(R) Assay and Significantly Improved Overall Survival in Patients With Ovar...( Analysis Reveals Overall Survival Cou...),Health

Analysis Reveals Overall Survival Could be Extended if Patients Receive the

Most Effective Treatment Identified by ChemoFx

CHICAGO, May 20 /PRNewswire/ -- Precision Therapeutics Inc. announced today that the ChemoFx(R) Assay, a cell-based test that examines the response of a specific patient's tumor to various chemotherapies, correlates with significantly longer overall survival (OS) in patients with primary ovarian cancer. Patients who received a treatment determined by ChemoFx to lead to the best tumor response had an overall survival 1.4 times longer than those receiving a treatment shown by ChemoFx to be non-responsive.

Despite the fact that all patients had the same type of tumor, 88 percent of patients exhibited varying degrees of response to different agents when evaluated by the cell-based test. The analysis also found that nearly two-thirds of patients' tumors were more responsive to a treatment identified by ChemoFx, than to the treatment they actually received. Based on these results, a mathematical model was created to estimate survival had patients been treated with a drug that ChemoFx identified as more likely to result in a greater tumor response. The analysis found that median OS could be extended as much as 23 to 38 months.

"These overall survival data demonstrate that the responsiveness to treatment established by this sensitivity assay in the laboratory setting, may in fact translate into meaningful clinical outcomes for patients," said Thomas J. Herzog, MD, director of gynecologic oncology at the Columbia University Medical Center and lead investigator of the study. "If these results are confirmed in current ongoing trials, this will be a significant step towards establishing individualized treatment strategies for patients who will require chemotherapy."

About the Study

Patients analyzed in the study had stage II-IV primary epithelial ovarian cancer that was tested by ChemoFx between 1997 an
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