Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type
: N, _( o# p* d6 v; W! P @NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 & \% N$ b) X8 k2 d
+ Author Affiliations
6 T# k) p' U5 c8 c, i" ~7 `1 ?, f- v J7 h' |
1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan 4 ^9 j/ @3 g9 B3 g- A$ B4 X
2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan 8 g7 A# n9 U; ^; W/ S; q
3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
% _4 W# o& v+ x+ F4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan
+ h% T7 q+ h9 W1 H. s# |- N$ \3 n5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
( ^1 m& E) m/ P% \, z3 }# |: w6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan 7 i: j9 Z; \3 W
7Kinki University School of Medicine, Osaka 589-8511, Japan
. n4 @4 g2 d- r7 m" p8Izumi Municipal Hospital, Osaka 594-0071, Japan
7 ~. ~, @7 M: h/ z) h9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan + b7 {$ z2 i# }. Q
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 " U6 O: D; _ o
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.
- l" E3 f% C3 ~9 [: n+ R e; S% m' ?! P3 z
|