Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type8 @0 K8 R4 r' H+ a1 @8 c
NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9
8 C: Z% l! ~* _% k! `+ S; \1 e+ Author Affiliations
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1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan 5 j g, N0 o) c
2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
! ~* u2 K: s G+ {9 ?$ P3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan ) q4 n: x" U2 j: A V, G6 y/ T
4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan 6 b/ H' C8 Z/ ^) S$ A
5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
3 w' M/ T% }" p, a& j6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan , K C+ b, S9 o7 y
7Kinki University School of Medicine, Osaka 589-8511, Japan ) `# \: Z7 ~/ I& h
8Izumi Municipal Hospital, Osaka 594-0071, Japan ( p" R7 i% T. ~! A) h' A9 U
9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan
# v& v4 Y/ `# f6 ICorrespondence 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
- I! Y, S. K( S; o) tAbstractBackground: 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. 8 s, m4 }+ I6 i' H7 a9 q" |" j- {+ g
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