Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type
4 L5 ?6 ?! u/ e6 M# ?NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9
/ u9 ^- z$ D' u+ Author Affiliations
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. G0 u, z$ M$ _# J9 [1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan 8 g. }0 r" C' i# V" i
2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
: i6 n$ s& A& k. \8 c* }3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan ) _- }& [' a% k/ s7 p; D: F3 D7 j: e
4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan
7 a d+ _3 y" [/ P5 e5 {5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
' D' r7 ?+ W8 m& b e& e! Q( G' H6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan - {0 W% U( T8 U5 p6 C0 d
7Kinki University School of Medicine, Osaka 589-8511, Japan 6 q) ?; ~* j$ n6 ^/ ^; J
8Izumi Municipal Hospital, Osaka 594-0071, Japan
" v. b/ B8 V1 c) ?! x/ \9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan # t# C9 C. b8 i U* I) Y$ |
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
- j* q2 ^9 v, {+ J' FAbstractBackground: 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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