Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type
' I' c e; W# W# y: Z4 yNOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9
$ J9 R; i9 {) h$ j+ J3 c* ]/ L+ Author Affiliations) d0 I. W7 k# P
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1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan
) n& o- h4 V( x( K; v, G2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan 1 n2 i! A1 y5 C4 r6 ?& L" U
3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan * i! g, Z5 Q" T* h7 c- {
4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan
' |3 j: A5 ^8 L3 B) `7 t4 }( J5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
& b, |2 E) V" q |! ~2 K" O6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan ( F% T \( d1 `4 K
7Kinki University School of Medicine, Osaka 589-8511, Japan
7 ^4 v# X7 b. t9 j1 }8Izumi Municipal Hospital, Osaka 594-0071, Japan 6 b5 w: v& n6 d" u, c/ u. H6 i7 H8 l* o
9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan 8 {/ { B" k8 \9 Q8 k5 `1 f
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
5 z' P. N! [4 A7 z. h. VAbstractBackground: 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. + A) @8 _) B7 t
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