Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type
+ C: j! ~0 d5 R8 a" X' o( ZNOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 ; P! E1 W$ ]/ M, z* S6 M. X
+ Author Affiliations
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, c6 }" ]" }( _0 E1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan
8 b1 `0 T% I! i* l v: R2 Z( V9 u2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan " W% B9 v6 Z( {4 j
3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan ' B) E$ I- d! z- m8 a0 Y
4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan
9 v! C) z \$ `4 ^+ Z: l5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan # c5 F$ x& S% I {4 p
6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan : ]7 V2 X- ]9 U8 E* ^+ P ^
7Kinki University School of Medicine, Osaka 589-8511, Japan
5 i: Q4 ]/ p% ?, X9 j0 j" g0 q. H8Izumi Municipal Hospital, Osaka 594-0071, Japan
9 R4 N, y) J: x) ]; `9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan ' N" x: Z6 u3 a, s9 ^2 `! c
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 8 x5 h( O; |) l& x
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. 3 t' x6 j/ y6 }
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