Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type
2 ^6 |, ~' z- O3 f! A( uNOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 4 J" Z1 ]2 v2 A& r+ r
+ Author Affiliations
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1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan
7 ?: g6 _. {, l2 |+ g) R2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
" ^) A5 c4 e o3 j6 ]) T2 S3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
5 _/ C: p; g$ d4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan + Z7 _ F2 e" y' q
5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan / ?0 P3 ?/ ~4 t6 U3 J
6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan
, V" r: @# P! b% J/ |7Kinki University School of Medicine, Osaka 589-8511, Japan / n' \6 M4 x' k
8Izumi Municipal Hospital, Osaka 594-0071, Japan
; J7 N* L/ g6 N( y% e9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan + m% i9 a. R6 ~: b R
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 H" U" n. x0 e' S
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. / i( H6 @/ C8 L) B% u
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