Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type
# [. q9 B2 g& v7 m4 x$ k0 HNOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 C! X- O8 N. J" ?& F' O# s& q) d9 u
+ Author Affiliations
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% b( j7 z7 H( [' X4 {' K1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan / f& Z3 X0 E5 R3 i- N$ ~% B( j/ M: \
2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
& c2 y l* q: K2 i% K% B3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
' F# @1 ^: }" s# h# O6 r4 _4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan
, o, [0 x9 v* Q( e" z/ v" p5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
( \: Q, @* B" V& J6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan % o/ {4 K' O! X
7Kinki University School of Medicine, Osaka 589-8511, Japan # o* _) `! \) E5 I8 G# _1 q
8Izumi Municipal Hospital, Osaka 594-0071, Japan
/ x0 ]1 o4 G) P+ n$ d# J% i9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan
. B9 f4 i4 t Q6 l+ Y! uCorrespondence 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 / O6 n8 y/ u/ z) |3 G7 k8 O- G% M
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. 5 {% n' J" z+ b+ U( s) \; y
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