Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type3 n& Z! c% C0 R0 v" h+ s' ]
NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 3 P# M1 r. f1 y2 U$ u, @
+ Author Affiliations
( \5 o) q& [4 a
) v; x1 n" Q( W4 y3 ?& q+ F e1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan 6 Y, C- d8 g% Y) U% W3 c. T
2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
, j( `( P3 m/ j! G' |+ J5 e3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
/ y [) Q- E/ S" V, K4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan
b" K+ P3 {! x) i* E5 [; @' N5 D5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
( u. ?9 l5 ]' ~ `7 Z p6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan 7 \- Y6 V8 B( h
7Kinki University School of Medicine, Osaka 589-8511, Japan 7 {1 j6 z7 c& v$ K N
8Izumi Municipal Hospital, Osaka 594-0071, Japan
# I d* m! b" V; [4 j9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan
9 z, x* k6 |- n) _% n. e0 pCorrespondence 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 8 A! g; v9 d/ a1 V+ D+ B. i
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. 9 n" o9 E0 Z) t1 k* g$ M1 L: ^
3 V2 W2 p* H Q8 b4 ~
|