Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type- w% K# Y) B0 W, ?. W
NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 ; v& {8 ~+ H8 U- y( m9 ^' r
+ Author Affiliations
. ?0 a2 }- _. w F
2 d/ Q7 {+ J" e' d5 \1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan
3 N& V# x$ Z5 h6 g2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan 3 k: ~0 _9 K" s. [2 @% W
3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
/ c5 P. ^; W5 _. }, s5 e. g4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan
! i) v% A& f% W( E2 y4 M5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
. x5 e0 h& I) U6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan
5 i+ [- c* Y# Z+ w8 S7Kinki University School of Medicine, Osaka 589-8511, Japan
. \) _5 c9 a; V& Q: e8Izumi Municipal Hospital, Osaka 594-0071, Japan
" N8 j+ e# d& q2 o; Y! r9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan $ J q8 ?2 U! H* X/ Y3 y
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
/ n4 K, I' A9 G, i' MAbstractBackground: 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.
4 ?6 M3 @' e# }& B; q7 c) r
4 x- l$ e* C6 K& N6 m |