Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type
+ i8 g, D' Y- nNOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9
- A' [' B: M, g+ e+ Author Affiliations
" J3 z( Y" U3 R; j8 U+ f
' b- R; E' v+ a. w2 v4 o8 y: L( D/ V1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan
+ L* u$ ?6 h* @# j* t9 ?2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan , K( Y% U8 q6 |6 Y/ {
3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
" ~/ g: i3 c% _3 V* {4 |1 S4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan * j0 k/ J8 o$ z# p' Q v! K6 x+ ^
5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan 0 P( A+ `* x$ t1 y4 e3 |
6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan , R- r, V. r2 ?# L7 J+ u2 O
7Kinki University School of Medicine, Osaka 589-8511, Japan
9 p. j2 L& _) d3 S6 @$ O0 [. V8Izumi Municipal Hospital, Osaka 594-0071, Japan - [; n$ Y4 n# e6 z9 F2 n
9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan
. w8 g; C( @5 L. q" r+ qCorrespondence 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 0 `8 X5 D& D' ~7 b$ t
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. 1 [3 U9 U1 p% r) }5 t
: T: B9 ]8 L8 q/ H+ a |