Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type: u- Q) q2 p B. v' p: |- F
NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 # ~$ d3 @4 O d& R
+ Author Affiliations. } U$ ^2 d5 n
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1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan
" v. \+ O; E# r2 ?6 u6 R9 \2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan ! e" }+ @' w3 b& }; e
3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan - i/ S2 }8 v2 N
4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan / N# `' W' F R. S; G0 y
5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
* f! _) j/ Z( O* [1 o6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan / a# o5 j# `3 v) {" J' Q. ^
7Kinki University School of Medicine, Osaka 589-8511, Japan
1 F( ~' c# z& V) h. L9 ?8Izumi Municipal Hospital, Osaka 594-0071, Japan , i/ n" J* v2 G. P% t
9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan
- T& u' M# @" m) w: N, H3 j2 |, QCorrespondence 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
/ O9 C$ ?9 t9 s& FAbstractBackground: 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. 4 {2 i3 Y6 t1 d7 L9 _0 m/ w4 b/ e1 |
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