Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type! J- p4 X9 z( h/ q
NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 7 L. h, g' t' k3 P
+ Author Affiliations" H$ X9 u/ e1 E0 M2 m' U; v$ ?3 g# L
, Q3 g' [6 Y+ Y1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan 1 _6 H. Q" ] k
2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
, I& U, w! x' J3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
& g* G& h [+ G" B6 W4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan & O7 R$ b6 y# t
5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan ' m2 U- W* ~1 m+ `" ^$ a) Z
6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan
9 `: b# _& ~9 h# I$ ]- x7Kinki University School of Medicine, Osaka 589-8511, Japan & `/ A3 `1 V: i" r' F& p
8Izumi Municipal Hospital, Osaka 594-0071, Japan . @9 k+ a( v; n- Z1 Z- O" b0 H: f
9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan
6 j* n& ^, l: [+ ^+ s4 wCorrespondence 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 . ~5 [5 S8 a" C) E/ m3 z
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. ) x2 [8 L' w+ G. f! |
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