Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type
- q9 u" Y$ x5 s: t" F* j( yNOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 2 G1 ~2 x' U7 @& Y
+ Author Affiliations
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) C! H' B h( m, }3 R. N3 s1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan
* e% z7 ^- s% ]2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
. A* P- G1 q8 t$ R- D P9 U3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
- U* | J* R( s, G5 {" I4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan 1 b" C0 X7 [/ a& m9 ]: Y# W
5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan : w! j4 Z$ k& a
6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan
% ~# r3 Q8 D; N3 e+ W7Kinki University School of Medicine, Osaka 589-8511, Japan " D, M9 h) v. A. T4 h) V) C C
8Izumi Municipal Hospital, Osaka 594-0071, Japan
% {% m, u4 v1 j6 k7 A9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan
4 u3 r" O4 h; i0 H0 a v; A' KCorrespondence to: Nobuyuki Yamamoto, Division of Thoracic Oncology, Shizuoka Cancer Center, 1007 Shimonagakubo, Nagaizumi-cho, Sunto-gun, Shizuoka 411-8777, Japan. Tel: +81 559895222, Fax: +81 559895783, e-mail: n.yamamoto@scchr.jp 3 k9 _4 Z6 `/ n2 s1 t% z
AbstractBackground: The antimetabolic agent S-1 inhibits thymidylate synthase similar to pemetrexed, but through a different mechanism of action. Whether the antitumour activity of S-1 depends on histological type remains unclear. We analysed pooled data from 2 phase II clinical studies of cisplatin and S-1 in patients with previously untreated advanced non-small cell lung cancer. Patients and Methods: We comprised 110 patients with stage IIIB or IV non–small cell lung cancer. Univariate and multivariate analyses were performed to determine the effects of histological type on progression-free survival and response rates. Results: On pooled analysis of the data, according to histological type, median progression-free survival was 3.8 months in patients with squamous cell carcinoma and 4.4 months in those with non-squamous cell carcinoma. Both analyses showed that progression-free survival and response rate did not differ significantly. Conclusion: Unlike molecular targeted agents and pemetrexed, a combination of cisplatin and S-1 may be no difference in response according to histological type.
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