Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type
7 F0 B0 j! `! {) ^, ^3 b8 j* t2 J/ \NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 6 ?% e$ W7 [+ d
+ Author Affiliations
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1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan
6 P- E* c( e( ^! ~1 W1 E6 I, T2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan ! y" m5 V# ?( H
3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan , m( a' v, @ }% t5 ^
4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan
+ P, |3 m: f. J, x( h' Z5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
8 Z! @( O7 }1 Z1 P$ T6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan 4 T3 m2 X" D6 g1 I/ n1 r4 ?
7Kinki University School of Medicine, Osaka 589-8511, Japan
& g1 E% N2 @9 F: Q4 }, f8Izumi Municipal Hospital, Osaka 594-0071, Japan " b6 E7 e- X! e2 ~1 u: }7 a! ]
9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan
! C: p! S b3 z7 `4 D% i! XCorrespondence 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
6 n3 @9 @/ i f- e. l" |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. ( Y+ Y# z3 C' v, e) Q
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