Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type
6 S1 d% ~# h6 x( d/ n4 d$ h# y( t% BNOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9
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: K v; d' c. p# j1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan ! t2 i( \6 s4 H% v
2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan 2 L9 J- L [- X U* M
3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan , {# i3 F* @ \3 p$ i8 u9 h' W4 G
4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan $ m$ t4 F) w3 p/ D5 M2 n& V
5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
6 v0 r$ B& S2 E l4 d( d6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan " e2 N) p( o) X A" _
7Kinki University School of Medicine, Osaka 589-8511, Japan
/ v9 m4 S1 {- K* C# G/ X/ V8Izumi Municipal Hospital, Osaka 594-0071, Japan
t+ D! l+ ?: ^/ u9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan ' S2 v2 L2 T- }6 x4 ]
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
- C5 f( N$ W9 W1 bAbstractBackground: 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. 5 ?, d9 P! r X4 j) p4 n% I
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