Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type7 {* h# y5 Z4 |
NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9
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1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan
! f" d' l: t$ N* T$ r% g2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan 2 _# F8 H+ _/ `6 G- w
3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
4 Q, k1 N7 t! F' [1 I# I! o- q4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan
8 W: ~0 ]9 I& |8 t5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
- Y% ~. Z9 g. d# ^6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan
8 F" o+ U+ a) d: P$ Q7Kinki University School of Medicine, Osaka 589-8511, Japan
) N/ [; k1 L5 V4 o) @" _8Izumi Municipal Hospital, Osaka 594-0071, Japan
- a2 A6 I' Y! {9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan
1 t$ q3 o) l! w6 b$ P8 M: fCorrespondence 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 % A; t9 ]3 v5 Z& z9 _: d& a& t
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. 0 w+ f* W. m3 F" r& B6 D
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