Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type
4 \$ u0 f8 T6 Y. N& ?NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 , }0 Y9 d# k! c% o3 t
+ Author Affiliations
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- \; q. o% ^& _' w1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan 6 B5 F5 d& W1 A) X* T4 S
2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
! ^& `! r& s* ~3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan - k, v* ]; g8 [# d5 S( d0 R1 R
4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan
8 s$ _. B5 D( ^$ g5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan 4 [( e! ?1 a5 i) _# N6 v
6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan
- V/ Q- k; T& G% m: D: M9 M# h! y7Kinki University School of Medicine, Osaka 589-8511, Japan
5 W" y5 V7 J$ y8Izumi Municipal Hospital, Osaka 594-0071, Japan & I2 c' M6 u% d& H9 Q$ x. b: ?0 c
9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan ( C* a% p2 K" F& G: x6 L
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
4 Y' I; R$ a* N8 O# M1 BAbstractBackground: 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. * C8 m* K5 E) Y
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