Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type
5 ?( l% g N3 P4 Y, u, hNOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 ! ?: \( F C4 j8 ]3 h
+ Author Affiliations
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3 ^( e% m" E, p' E1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan * o) n% } X. e, w- X! z" N; H
2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
! F7 M1 ?; t9 P# m5 v3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
. b, d- X7 `2 a3 J4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan
' [! Y8 b! R1 h* F0 M; [5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
& O: N9 k% v$ J* C$ @" b6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan
. H, e) ?& U7 z1 S. Q1 o7Kinki University School of Medicine, Osaka 589-8511, Japan % O/ T' A. {. V" O; @
8Izumi Municipal Hospital, Osaka 594-0071, Japan 8 Q- ^# q5 w! P0 C. _# l( E. g
9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan 0 P X2 R* P* j9 |3 W- L
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 - u6 W9 n `. L9 S1 W: O
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. / v, G, L; {( Q* o6 Y" \' l* b
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