Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type
- ^8 |% V; Z9 y# D2 {NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 / j) S7 F6 ?6 W
+ Author Affiliations
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5 n( ^- n! _: k0 t; R+ ?1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan 4 {, g6 T0 f7 L0 m5 x/ `
2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan & a5 ^1 C: V% B8 W2 G) t
3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan " T8 e' w& u0 X5 j* C( [
4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan 5 [- Q) S6 @7 J$ P1 p
5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
/ B# G8 E2 x$ v1 y; j/ N# k( Z6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan
6 P- e! x* ] f$ S7Kinki University School of Medicine, Osaka 589-8511, Japan 1 C& |. g7 D. h( u5 A$ i
8Izumi Municipal Hospital, Osaka 594-0071, Japan 2 m/ n5 ~# q) c6 D
9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan
4 z( l! e/ [( n2 O3 D! ]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 ' u( n% u4 A) t/ u3 K n
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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