Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type
+ ]" j8 m' K4 ?' eNOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9
0 d2 U" ~1 d8 ~ U, x+ Author Affiliations
2 V0 l A0 }# l* Y' d
3 s( O, a N; U4 x2 V' P1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan - G) O# y) L6 c ^ o6 w+ Q
2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
: ^' h1 U- w0 H6 d3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
7 t; B1 G/ E' z, @( {4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan ( ?0 f$ y- Y4 I1 ^; ?
5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
; [- {1 g/ |8 D$ _0 G+ H* F6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan
% {5 {" j4 P+ i/ y: V( T6 u7Kinki University School of Medicine, Osaka 589-8511, Japan , c3 {' U+ y% s' L) }
8Izumi Municipal Hospital, Osaka 594-0071, Japan 3 k2 ]" F7 c4 Y( d: e% _" F
9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan 2 i$ h: 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 8 o5 c. R: @8 a
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 V+ q0 C# ^! S9 Y
" x/ ~) o" z3 s# s
|