Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type
' c9 ^1 l- d7 ], O( h0 SNOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 " |0 r7 c; \, R" n7 Z; p
+ Author Affiliations
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- h+ [" Y* n& V t1 Z' e3 i* @1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan
# D( f5 c. ~$ q! f2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
/ `7 ^' n) {% P3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan . \% N2 T- I1 T: R- \* K
4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan ' d0 {! O+ P+ c1 P" V
5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
) A( }8 R1 v, A' A% |* d2 r) k6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan
7 V [7 [2 U/ ^* J' |7Kinki University School of Medicine, Osaka 589-8511, Japan
! X4 m! m, o9 T. C1 L8Izumi Municipal Hospital, Osaka 594-0071, Japan
. D) o$ r% d" i. K" U# h# M9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan 4 o1 `9 E& ]! N' X5 X! {9 `4 B
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 3 e# Z0 ]- h- F' D, K
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. ! N3 Z) b o' `9 Z5 V" |9 y- P# B
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