Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type8 v( ]" D4 R4 h
NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 # O# r1 a* `1 G" u6 z8 O C
+ Author Affiliations
$ R# L7 A7 c* F& Z6 ~7 {, D" _, r# x" F- w2 |+ P" j
1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan
: u+ C: m2 [4 l; W$ v2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan . ]9 W$ ~1 k; o0 J5 H1 L$ ]
3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan 7 E# b n D. f1 X
4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan
: h, [6 Z% R' `; @- {$ i$ @2 e N" l# X5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
6 b; |+ u, M3 c5 U! n+ ?) ^6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan
$ s2 i0 c) k* C; M( M8 W7Kinki University School of Medicine, Osaka 589-8511, Japan
% J6 ^& `9 f+ F) c1 I$ k- \6 z0 G8Izumi Municipal Hospital, Osaka 594-0071, Japan 8 Z+ j) i" `9 H; ~0 C$ S) @
9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan
$ E" }) N3 B3 _; V+ X) H0 ^$ kCorrespondence 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
7 m. s! @) ^( n; ^$ FAbstractBackground: 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.
4 Z3 p- `% ~% }2 S4 v( I
8 L- O5 [) `; F% D |