Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type
; u a& J6 \1 g" K2 z% E7 |7 YNOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9
! |* G' X! H" j+ c7 f) p+ Author Affiliations
- m& F. z# T2 q" m
, L) ~$ `6 J2 S4 m1 J2 |. q4 _6 y1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan 1 l& Y6 y5 R2 ~ g4 j
2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan + z! l6 V1 G5 a/ s
3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
& V/ j$ t2 v2 v3 W4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan $ y1 Y |: J, h& H* s9 ^' [' z
5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
% d/ Q! P, Z! }& S4 O4 y& y: m6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan 8 L; ~3 a$ P G0 m
7Kinki University School of Medicine, Osaka 589-8511, Japan # Y+ \6 ^1 T2 K
8Izumi Municipal Hospital, Osaka 594-0071, Japan 5 W4 H) c& o0 [/ q3 U) E
9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan 2 }7 x) K/ N/ K6 I7 y+ Y2 z: W+ h
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+ q) r3 i, B2 wAbstractBackground: 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.
: V1 U; K6 n& y% G0 |. i) }# n) L5 B7 o, O4 N7 \* _
|