Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type
+ q3 l& }. X& C" m6 _7 wNOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 d7 L( u; m, p! w! ~
+ Author Affiliations& i _0 n! h! C! J) B/ G
/ a. R# z# O7 f9 r4 x: r1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan
" Q' {' g& [0 G1 \1 Z3 O2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan " Z: \( S9 ?; t: R8 ^# j1 d. C2 c
3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan 7 S& R% Q- H$ `! ~) O s8 i
4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan * z3 h- ^5 G0 a
5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
; @/ M. R! u- R2 }- @1 {) d; B6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan
" o# L0 P1 `1 n a" p7Kinki University School of Medicine, Osaka 589-8511, Japan
0 F' i# m9 v9 Y L8Izumi Municipal Hospital, Osaka 594-0071, Japan
* }) n p( N# i0 y9 F1 u$ ^2 P9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan
! x9 i+ J/ m+ |# fCorrespondence 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 & ^7 \: S3 Q! B7 C* P6 H2 f
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.
5 }9 d" A+ ]4 v" q
8 D/ V2 ?! W. h6 G" ^5 \9 w |