Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type5 }: E# ]" h4 h7 I
NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 ' K" Y0 y+ v9 {" m. }' [ ~
+ Author Affiliations
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1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan 2 ?2 {* y, G& U# F
2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan $ {5 x; S4 U6 o' A
3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan # ~3 g: p5 _1 o# r3 @* H; J( l& C
4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan
/ }% j3 \, @& `, A7 t5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
N0 v+ M0 m& K2 n+ D2 [& x6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan v3 | \# X7 S6 _
7Kinki University School of Medicine, Osaka 589-8511, Japan
# o" n& L4 D# e, V* c2 V8Izumi Municipal Hospital, Osaka 594-0071, Japan
5 H6 P3 a( C9 _9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan
) E( ^' N/ D2 H' |5 B3 [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
% j9 w* Q, r7 k5 `6 W% S$ CAbstractBackground: 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. 5 [* Z4 W2 ]7 q1 x( Y
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