Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type
) x9 Z6 o) E1 d& g& |8 MNOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 3 V7 q/ p, l/ v3 G/ a
+ Author Affiliations
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- p! W9 X% k# k8 {+ F1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan ) b# B) x: @8 W* o+ I
2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan / ?, x) t' E# `! [6 U$ m
3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
7 [& V3 J/ L) R- u4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan 9 C+ I+ a# @4 T, ]- A1 e( r
5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan , @1 z# E2 _$ b7 a1 \' w |
6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan $ [& F! m% R% x/ s* T. U
7Kinki University School of Medicine, Osaka 589-8511, Japan ' n \8 w. c3 M6 F
8Izumi Municipal Hospital, Osaka 594-0071, Japan
+ i( o1 g1 a9 k& Q n9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan " O! G- j" v: K1 z/ x* k
Correspondence 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
- c8 b* A' [* R5 k# Q. ]+ Q. q+ uAbstractBackground: 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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