Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type N+ x0 Y6 O G6 T; e/ F
NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9
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1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan 1 K! A+ e9 A% w) Q# q
2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan + @. a# k! J8 c1 n& Q/ M) \' e
3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
A* z8 V* |; Q7 P4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan
" j' O L' h5 G5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan 3 N! V* V$ G! K: u8 t4 @
6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan ' F, F( j: A# s. y' G _8 {
7Kinki University School of Medicine, Osaka 589-8511, Japan 4 O! d0 m6 m5 H7 l8 o2 Q& m
8Izumi Municipal Hospital, Osaka 594-0071, Japan " ]; S' i5 ]+ |2 e1 \2 C
9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan
( L+ X8 H8 a3 U5 s7 p# ACorrespondence 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 8 D5 F O$ B4 Z# b. O
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. " E8 ^! p5 U7 @. y0 \ Y+ t
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