Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type2 F }5 s) {5 F. O8 S+ C
NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 1 T! W+ I# |3 g; v% g$ V! ]( d% u
+ Author Affiliations1 } B* f9 k5 K+ S0 g' Q
% @1 P% N# e& D% W' ]0 @1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan
& F. ]: b8 O2 u5 J2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan - G. \, [9 ]' Z. J
3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan ; {4 y) K7 F* j0 ]" N3 B6 ~% _
4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan
1 g6 O l$ S3 v( l: B; E% m y- e5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan 0 U( I) { i/ w( p' U" |1 s' d
6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan
2 I C) h( h4 {" v, j7Kinki University School of Medicine, Osaka 589-8511, Japan 7 O+ e/ H0 |$ b. u5 `7 a# |' z
8Izumi Municipal Hospital, Osaka 594-0071, Japan 0 |+ k2 I B2 I$ X- v- H1 o
9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan , W6 N, {+ v. _1 H" h/ w) |
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
# E9 l4 D- @( \0 qAbstractBackground: 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. 8 k$ N" Q* \9 ^! C% n" D' d) V
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