Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type
, Q7 v. u6 a5 g* u% e2 E$ q5 wNOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 + T& g* |% B% \3 [# S) `4 \
+ Author Affiliations
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- p# f( Z% G& c% M, u1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan
( ]& p$ z" M" B# H+ b$ ~, K2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
, x4 R: t& t* Q/ u4 g- K3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan # E( W0 y; B) `# n( i+ B9 |
4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan ! I9 @# |) e/ w8 ~; \$ R
5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan 0 f+ F( X: d- b8 D
6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan " V" {8 G$ ]6 [( w& u
7Kinki University School of Medicine, Osaka 589-8511, Japan ( f5 F# ~( }, U0 i7 q1 P% g7 G) ^
8Izumi Municipal Hospital, Osaka 594-0071, Japan 7 @+ I- }3 j5 J- M+ k: B
9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan
9 U! u. f# D: @7 x" C3 BCorrespondence 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 # \- {7 a7 F% N: j3 b
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. ' I) i- {; ?/ g9 ?# H. o3 P: q
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