Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type/ r* i& Z) Z. d; N. i: a Q* E! Y
NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9
- _/ E1 ^" D0 P3 {: `: `, U9 t) H+ Author Affiliations
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& C) J6 s2 j# o; I- @1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan
6 }* h _+ S i9 a' n, T! D2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan " Q4 w+ I( l2 ~& `" a& F$ d
3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
! c. \( y8 b7 b$ q4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan
+ [9 L! U& X7 p& |/ t7 A5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
i2 m7 `' x" d, M/ v6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan 8 [$ Q; G$ A( ]6 {7 ~ X
7Kinki University School of Medicine, Osaka 589-8511, Japan
; o" C9 m9 ~% z0 |; n8Izumi Municipal Hospital, Osaka 594-0071, Japan
5 W( [ ]3 P1 ~9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan
" V$ V$ ?0 u/ mCorrespondence 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
1 W2 ]9 C1 l$ PAbstractBackground: 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. / x, P5 v8 I7 d
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