Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type% N1 j" N7 U5 @& s4 ]/ ^& |
NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9
u. e, {+ j+ ^9 q O" E+ Author Affiliations
) \) z: i. X$ U% i! v
" `4 V6 e; @5 V' a2 Q! D- b& c4 x- _1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan & A2 X4 a" |! _) b: L0 ]( g
2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
5 V I/ q9 B2 J( S7 z* i" T' z3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan ; x8 G* J) Q& P6 @
4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan
7 F+ T0 E- \: H! a. E5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan - u9 I( u3 U, s4 I6 Q
6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan , Q3 h3 ] j" P# S0 p
7Kinki University School of Medicine, Osaka 589-8511, Japan
! n5 t% m8 P, y9 D: n8Izumi Municipal Hospital, Osaka 594-0071, Japan 2 B4 V8 z4 U ~; W) k* _
9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan 5 Z& Y! m# Y; h: ~$ Z# z0 J0 U
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 & `3 z9 K" J0 y+ R+ G6 Q5 Z
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.
3 X- R+ W4 s, c6 p: [6 V$ L4 l& w+ ~5 ]9 v6 a
|