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Experimental chemotherapy regimen shows promise in treating advanced lung cancer
Date:8/11/2008

PHILADELPHIA A combination of chemotherapy agents that have been tested in other tumor types appears to be a promising alternative to standard treatment for advanced non-small cell lung cancer, according to a report in the August 15 issue of Clinical Cancer Research, a journal of the American Association for Cancer Research.

In a phase II multicenter study of 56 patients with an advanced form of this common lung cancer, endpoints including response rate, progression-free survival, and overall survival from use of S-1 and irinotecan were similar to, or better than, those reported from standard treatment with platinum-based chemotherapy regimens.

Because the study had only a single arm meaning all patients received the experimental therapy the researchers cannot say if this regimen offers more benefit than standard treatment. But they did report that side effects resulting from the experimental therapy appeared to be much less severe than those typically seen with standard treatment.

"There continues to be reluctance on the part of both patients and treating physicians to accept the toxicity of platinum-based therapy, given the associated small gain in survival, so active therapies with improved toxicity profiles are clearly needed," said the study's lead investigator, Isamu Okamoto, M.D., Ph.D., associate professor in the Department of Medical Oncology at the Kinki University School of Medicine in Osaka, Japan.

Okamoto says that a direct comparison between this experimental regimen and platinum-based "doublet" chemotherapy should be conducted to confirm what appears to be a survival benefit among patients who used S-1 and irinotecan.

S-1 (also known as TS-1) is approved for use in Japan and Korea, where it has shown substantial benefit in treating gastric cancer, but is still in clinical trials in other countries, including the U.S. and Europe.

The multifaceted agent, which is available in capsule
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Contact: Jeremy Moore
Jeremy.moore@aacr.org
267-646-0557
American Association for Cancer Research
Source:Eurekalert

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