Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type) ]$ X4 t) P/ T/ }- o3 t
NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9
9 ?3 e: p+ h% p+ Author Affiliations
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1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan : @. f4 x4 j- t( V2 ?7 F0 s, F! q
2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan 3 {* K- x% J v
3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
8 X: V& H6 X, T# `" D }- h: _4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan 6 d% T; |, F) F" u2 x6 i! q
5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan ) G6 I) H0 M4 D4 A0 _
6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan 8 d# }8 s* b* I+ f. E0 z
7Kinki University School of Medicine, Osaka 589-8511, Japan
, P% T$ e4 p3 L4 W/ J' E8Izumi Municipal Hospital, Osaka 594-0071, Japan
1 k, o5 Y+ K4 v& {# `9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan - z, F: |3 H' ]" a7 M. J3 p( {
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
( Z. [3 Y' M0 T+ hAbstractBackground: 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.
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