Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type" q7 d6 [3 a9 C' w! r9 |$ q
NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 7 `7 D8 T- a4 r4 M3 T& A O* @, g k, b
+ Author Affiliations
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1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan
@) \* i0 _) n" N6 O* k6 g- {. c2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan - {( a) a8 s3 D* G7 l$ _3 R
3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan # X( U% B) E3 b! P% }5 b
4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan
% S- U* E" w: U) c- r4 D5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
' V0 Z" ~ J1 V: Z6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan 6 ~) B& B$ r3 G
7Kinki University School of Medicine, Osaka 589-8511, Japan 9 t; @4 I! Z/ x# ^/ o2 B3 \
8Izumi Municipal Hospital, Osaka 594-0071, Japan
3 |' A! a2 E% t9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan / f6 m+ A$ K8 e! ?
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 ( [. t4 q: W% W+ v
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. & {" p+ H, _$ d4 N
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