Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type
- L7 t2 e$ _5 \/ a; w- U( MNOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 : S3 ^9 o, T- b1 n ? Y( ^. G K1 ]
+ Author Affiliations
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1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan
3 E% A9 i. ?9 A; M7 L" Z* i- v2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
, @8 k; G! r6 u# }+ c6 F3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
1 h" C; Y5 c/ z% G/ n4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan
+ q% Z/ b& }; x, V5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan 6 Z* X! F" N% c' v* b
6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan
+ G; a, ^3 M- _: `! n4 K2 h' e7Kinki University School of Medicine, Osaka 589-8511, Japan 2 o# c' @/ V! Z# b1 _4 U. f$ H
8Izumi Municipal Hospital, Osaka 594-0071, Japan
$ Z1 L$ f1 [, t# V2 V+ a; [9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan , x, J. P1 n1 d* z- U
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 ( ~* C6 ?0 Y4 H7 }6 ~
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.
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