Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type: C {! N2 f, V% v' O
NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9
8 H J v' O$ c7 d, f+ Author Affiliations
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5 X9 u- X R8 H) U4 M) z. v; |, i1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan
4 }3 X) b* V5 n8 A. Z2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan 5 m. x5 M7 e# t; O2 h
3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
- y; j- x( O* d4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan
V2 W$ I& Q5 V/ ]7 o0 M5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
2 F( G* V' g8 y5 H7 S! ~6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan
0 r. g- e! T/ i3 u z7Kinki University School of Medicine, Osaka 589-8511, Japan
( K2 N9 q4 l' g* E+ `4 t: \8Izumi Municipal Hospital, Osaka 594-0071, Japan
4 j* J( h/ f4 B6 M9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan 3 |9 H6 P$ J) R: _- m# m6 F; b, a
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
4 r1 z, \& v$ c- h" e1 z; DAbstractBackground: 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. 4 ^, }1 H; Q' ~
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