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Original Article
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Volume 346:85-91 January 10, 2002 Number 2
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Irinotecan plus Cisplatin Compared with Etoposide plus Cisplatin for Extensive Small-Cell Lung Cancer
Kazumasa Noda, M.D., Yutaka Nishiwaki, M.D., Masaaki Kawahara, M.D., Shunichi Negoro, M.D., Takahiko Sugiura, M.D., Akira Yokoyama, M.D., Masahiro Fukuoka, M.D., Kiyoshi Mori, M.D., Koshiro Watanabe, M.D., Tomohide Tamura, M.D., Seiichiro Yamamoto, Ph.D., Nagahiro Saijo, M.D., for the Japan Clinical Oncology Group

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ABSTRACT

Background Irinotecan hydrochloride, a topoisomerase I inhibitor, is effective against small-cell lung cancer. In a phase 2 study of irinotecan plus cisplatin in patients with extensive small-cell lung cancer, there was a high response rate and a promising median survival time.

Methods We conducted a multicenter, randomized, phase 3 study in which we compared irinotecan plus cisplatin with etoposide plus cisplatin in patients with extensive (metastatic) small-cell lung cancer.

Results The planned size of the study population was 230 patients, but enrollment was terminated early because an interim analysis found a statistically significant difference in survival between the patients assigned to receive irinotecan and cisplatin and those assigned to receive etoposide and cisplatin; as a result, only 154 patients were enrolled. The median survival was 12.8 months in the irinotecan-plus-cisplatin group and 9.4 months in the etoposide-plus-cisplatin group (P=0.002 by the unadjusted log-rank test). At two years, the proportion of patients surviving was 19.5 percent in the irinotecan-plus-cisplatin group and 5.2 percent in the etoposide-plus-cisplatin group. Severe or life-threatening myelosuppression was more frequent in the etoposide-plus-cisplatin group than in the irinotecan-plus-cisplatin group, and severe or life-threatening diarrhea was more frequent in the irinotecan-plus-cisplatin group than in the etoposide-plus-cisplatin group.

Conclusions Irinotecan plus cisplatin is an effective treatment for metastatic small-cell lung cancer.


Source Information

From Kanagawa Cancer Center, Yokohama (K.N.); National Cancer Center Hospital East, Chiba (Y.N.); National Kinki Central Hospital for Chest Diseases, Osaka (M.K.); Osaka City General Hospital, Osaka (S.N.); Aichi Cancer Center, Nagoya (T.S.); Niigata Cancer Center Hospital, Niigata (A.Y.); Kinki University School of Medicine, Osaka (M.F.); Tochigi Cancer Center, Tochigi (K.M.); Yokohama Municipal Citizen's Hospital, Yokohama (K.W.); National Cancer Center Central Hospital, Tokyo (T.T., N.S.); and the Cancer Information and Epidemiology Division, National Cancer Center Research Institute, Tokyo (S.Y.) — all in Japan.

Address reprint requests to Dr. Saijo at the National Cancer Center, Tsukiji 5-1-1, Chuo-ku, Tokyo 104-0045, Japan, or at nsaijo{at}ncc.go.jp.

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