Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type* V) T* m* g7 `* w, g, s
NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 6 Y* G1 v6 z5 K( ] \
+ Author Affiliations& v, Y* K$ N4 |
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1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan
4 P9 T. D$ B' f+ [2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan " Z* T- l+ m$ M3 U- |5 H+ N! h
3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
w# t4 j/ G7 Y& h% r8 n4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan
- C2 ~- [$ L ]0 t4 E/ }5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
' H$ ]& U2 F4 q1 u0 W t6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan
+ ]7 w1 y& U' E- \5 e# r* C9 h7Kinki University School of Medicine, Osaka 589-8511, Japan 9 {0 Y. o8 x+ j( [3 K8 f/ R
8Izumi Municipal Hospital, Osaka 594-0071, Japan
4 I, r5 s' E4 l9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan / w$ Z. `7 N9 w1 [2 i( ~4 T
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
% [( K' d5 _' o+ W4 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. ; C/ h7 G1 K, r* T* i4 U" X O. @, H
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