Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type
0 k" a9 H% f% ~) ^ HNOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 * [2 J I. s2 _* W' d& y c
+ Author Affiliations
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1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan 8 G, Z9 n7 T* f3 B' o" }9 t
2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan " d' Y( g$ Q \
3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan 7 s6 j& L, t) B2 y. K$ E7 F6 X
4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan , }, [. Y. n% F1 ]: C' p0 x( [
5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
6 ~ }! U: I2 ~, ^6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan
# Y8 ^: j7 K6 ~; ~+ C) k7Kinki University School of Medicine, Osaka 589-8511, Japan
1 w7 [$ q! K: n+ ~8Izumi Municipal Hospital, Osaka 594-0071, Japan % \5 B! |5 d4 z6 {) q
9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan
3 t9 d; m, o- G# b- P& z* d- o1 U6 hCorrespondence 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
3 D- R* j( F' R+ ~6 r' Z! N- rAbstractBackground: 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. . b/ O. u# O7 S# f7 E3 |4 E
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