Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type0 g+ h5 Q3 e. f) x" c: y
NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 & s' |7 [6 i* X
+ Author Affiliations
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1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan ' |3 K% t$ ], J$ M* e! g
2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan " R/ i" ^1 p" t4 l9 G: |
3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
6 t2 U) R, M. e* r7 }" n4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan
; ]* _8 o: J9 u% D5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
: t% M: _/ [9 c* c( v6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan
. Z* H5 v$ P5 I3 ]" h B+ A7Kinki University School of Medicine, Osaka 589-8511, Japan . X. |- f. c- Z7 k: l9 o3 e0 ]; Y
8Izumi Municipal Hospital, Osaka 594-0071, Japan $ r u, [9 f& R% V( ]7 h
9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan
9 O+ y* T/ W, ~. G _; NCorrespondence 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 ! P) i ?9 t- {$ Q! Q, I
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.
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