Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type
- h6 q; \$ v! i5 S3 H6 bNOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 , } ^# y6 K/ B3 M ?: e4 Y" M) C
+ Author Affiliations( R$ I, Q9 V+ L
3 s8 G+ W: A6 `/ q# @( K" Y
1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan $ S7 q- x8 A$ f6 O% H: d+ r
2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan ) f* a+ L6 ?; e, V, _0 f
3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
& h" A1 d5 i W& o4 r- B' G& a4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan ' A* G3 J+ y- l. J. J$ X' w; l1 u
5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan ( k% N7 C N: d1 E8 b* E: @
6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan * e+ Z) ]/ L1 {" r+ N5 m
7Kinki University School of Medicine, Osaka 589-8511, Japan
; p2 r) H" Z: Z8Izumi Municipal Hospital, Osaka 594-0071, Japan
) f: I) j. x% o! o9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan 5 n/ @% u7 O. J% K
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
+ l: n1 Y) l/ m7 ]% Y* YAbstractBackground: 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. $ |- V8 ?' v' e" b
( o# W/ T9 l# q8 S$ y0 T |