Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type
. k$ g* f4 r0 Y# W5 {NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 + s/ m4 Y5 z% M/ T
+ Author Affiliations
: |) f M$ I U" J# c: M$ i5 E
- \& @2 Y7 N7 H. ], s1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan 8 G6 L/ W2 _, U: |7 Y
2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan 3 I, d- F3 j i8 k. L( b* |& b1 K1 {
3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
" z; [7 X( l7 S$ ^/ O4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan
/ Q" h& q' b6 a! [5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan , b Q2 W+ Q w
6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan
" o: }( _7 h3 F' P8 O; |* s7Kinki University School of Medicine, Osaka 589-8511, Japan
; J( O4 |' z9 b- I8Izumi Municipal Hospital, Osaka 594-0071, Japan
+ C2 r- Y% E- v5 f& v# e9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan : h$ G& ` z, ?7 v* _3 U0 N V
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
# L; s0 T7 r3 _- _* \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.
' V1 U6 @" M6 z( v
" O& O0 V; Y8 ]# {. g! g- l |