Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type; D- a" m# W: Z0 ~! p! b9 e
NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9
* Y- P9 A* D; b+ ~. H. L+ Author Affiliations
) Q: e' [" J9 E. t- x$ U( e6 M6 W# Y s
1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan ' e( u1 O6 p+ K) G8 w8 A# X
2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
: \3 L7 e$ v } t; e3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan - }( @" {0 i3 E6 d5 |8 w. `1 U
4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan % A4 f3 g1 S: N. j. e
5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan & F9 p' a$ x* J& T
6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan
8 u. d& r1 {% x7Kinki University School of Medicine, Osaka 589-8511, Japan ! ]9 K' Z3 O2 }; S! B3 `
8Izumi Municipal Hospital, Osaka 594-0071, Japan
# i" a0 I) Z9 ?9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan
, E; c% [5 D) T- U8 yCorrespondence 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 - r/ J$ V: j% P; t. x
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.
0 j6 _# E+ p: Y) H/ {
3 J- q5 P( h' y1 B6 f$ l( h |