Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type
; v0 ]4 F+ r* h+ r( M/ c: W0 j% oNOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9
: A: P6 Y: \0 v$ d+ Author Affiliations0 X, ^% |' D. v/ {- Q
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1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan
* g* U% A' y( ~2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
* }: e% }# S1 y3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
4 T. D: g/ v3 N- [2 T* d9 y; n- g0 m4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan : F; m# z/ ?/ p' r% ^6 ^: y
5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
) m# @& w6 l7 c# u3 u7 L6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan 9 t% ~/ y6 N' [' F, H3 S x- T
7Kinki University School of Medicine, Osaka 589-8511, Japan
5 r0 E4 a! U+ \, W8Izumi Municipal Hospital, Osaka 594-0071, Japan
/ P5 a% m! o1 Q( | P+ u9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan
# x% g- t- }: I1 c' |' |2 `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 |) c3 ?2 `" u0 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. & g4 \$ ^ D- B: F9 f ^+ K/ b
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