Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type
3 w' j/ y% \. u$ ^) V i; aNOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9
+ U2 g: F# p! O+ T+ Author Affiliations# w( b5 j% \, h" X3 y' d9 I& o6 U
6 V4 X2 r9 y; @9 B, E, K
1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan ' F. ?/ Z% \8 @ a
2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
* l! o8 _2 @7 I) P; @3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
+ z: F Q. K9 N% F* D' D: W4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan b) P! c2 G2 ?
5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
0 D$ H& J, F; A8 o+ P, G! C5 H3 g6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan
* [: ?$ w3 s- a) }7Kinki University School of Medicine, Osaka 589-8511, Japan
. S& M p: p' q, c2 u; f& n' O8Izumi Municipal Hospital, Osaka 594-0071, Japan # }- B' F- e! c5 ^1 Q' Y# i
9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan & C+ Q5 z1 o% D
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
$ Q( A2 Z9 \* AAbstractBackground: 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.
5 c* e, g% O7 M: i5 }4 K( H0 p7 r2 P# a9 t9 M- l1 x) J8 q' g" @
|