Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type6 g. b# \' f7 n$ o. B: v
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 9 |/ Q; M9 J- c9 M
2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
- _/ Z h4 ^4 z) Q4 U# R4 ]3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan % P6 g f8 T( U, a ]6 C3 V
4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan
: \! v( Q$ w9 q7 p9 [7 F5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan ! {- ~1 v8 \# U4 R
6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan , m5 E! M7 w- r8 D6 j3 m
7Kinki University School of Medicine, Osaka 589-8511, Japan 7 \3 C+ ~! m* _9 p. D2 C
8Izumi Municipal Hospital, Osaka 594-0071, Japan 8 | S0 j& P i' F6 ~6 K5 {
9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan ! |0 p6 Z6 X2 p, G) A
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 * L4 K) m3 `9 M1 B
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. / L; n+ k, ]- U7 O4 N
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