Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type. ~, o* A. v. b* `
NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9
5 S5 r* B9 a- i+ Author Affiliations4 m( \4 d4 K8 W) J
3 D4 c5 v/ C9 a# G3 L( A Y& c1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan
) p. o3 U& o4 C5 \2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
) j3 W' ~. w+ p( Y/ g& G3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan 3 D. w. Y D8 z' e
4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan 4 Z2 @6 M+ P2 L! ]" D1 O7 p# f
5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
& r0 }. ]1 _! ]1 y: a6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan 9 n0 Z0 ^2 D) g5 J9 [; h
7Kinki University School of Medicine, Osaka 589-8511, Japan
0 {* J; a2 Z; Z. }5 i8Izumi Municipal Hospital, Osaka 594-0071, Japan
" V2 K6 q9 L9 v7 U, t* \9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan . l& e4 f" c# f: K% K1 q
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 * m! \5 z$ {3 b' n
AbstractBackground: 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.
) J) @$ o2 K1 j. _# \/ ]( R W/ f, F$ Z2 p, }/ @6 D$ N; H+ }
|