Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type; l. N1 @; S6 `3 v
NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 , T# \) C1 V/ M- S: m) f! Q
+ Author Affiliations& Y9 C' ?" h1 Y, m
# }% E) @* y& I$ }, ~& n9 h1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan
( B% J. U+ r# \/ ~( p2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
, ~$ \' k ]+ ]# q3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
8 j+ Y; h. o! y) e) k$ z* M% c$ c6 {4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan 4 C5 V* r+ x9 A+ ]% y2 `
5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan 5 g7 w3 |% B$ E, W3 q
6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan 2 g; B& g& J. J5 x
7Kinki University School of Medicine, Osaka 589-8511, Japan
4 h% A d3 Z2 U4 [" z1 j) V0 g* U8Izumi Municipal Hospital, Osaka 594-0071, Japan
7 g w. c/ I/ R! i& b9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan " L% ~7 Y' q0 r( l8 z
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 / _5 c7 e M" J1 d$ [) `2 h5 o) M4 N
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. 7 E& g3 p) ?: A$ p
( x3 V/ [) V( J
|