Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type! q# K5 y- W! L- _5 P
NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 * J3 B6 c$ [2 V( l5 ^( n; N3 [- y- r
+ Author Affiliations" @* T/ i4 C4 F0 ?7 v
$ j- @- ` V* U% X+ B! x
1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan 8 J0 r3 r! @/ m! a! D
2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
" h! Z0 z* G, s u. V3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan # L% r; d: @; i3 \
4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan 7 @( {3 o+ p# |# a1 k, A
5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan ' m+ V# s' _, \* Y! {
6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan 5 }4 L: f" G0 D0 `! S* d* V
7Kinki University School of Medicine, Osaka 589-8511, Japan
( B9 [' O k5 {$ M7 n; q8Izumi Municipal Hospital, Osaka 594-0071, Japan
* E c. ^, O! h& F( w5 o9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan ~( m7 A0 H! [/ K+ @1 L, C
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 7 O' Y! X! _. H" X4 y$ s4 P
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.
* y# L4 X5 p7 c9 I: |/ Z' ~0 F! w. e) f" R* Z
|