Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type& }8 C O1 T6 }4 D
NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 ' m/ ?) ]" V( J
+ Author Affiliations
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1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan
" f1 _/ M6 _9 P, Q" T* R2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan 9 m$ ] d4 e: ~/ p: t0 v. }. u. F2 w
3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
; V& B: O. g( R* J4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan
, b& p- H3 {+ A: f5 t) v# }5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
9 Q: x% x- x4 z6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan + K# V M1 W( d `! c7 G: W6 k s
7Kinki University School of Medicine, Osaka 589-8511, Japan + ~; q( F* h3 k6 V" h
8Izumi Municipal Hospital, Osaka 594-0071, Japan
; K5 [/ A9 E. w+ E" D9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan ) y( q8 o8 ^6 u0 O
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
: o/ |; B# d0 [( t& PAbstractBackground: 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. * F2 [) e8 U7 G0 v
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