Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type# }; |$ v0 ^5 {& C& u8 [: q
NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 - |( w% K6 r. k, `+ w5 Y# ]/ |
+ Author Affiliations
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1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan
# a( h& ~" Z& w9 c" T2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
q* a) x3 Y) a6 i3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan 5 r% @- m# Z3 Q
4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan # o. A `$ \# p& Q5 D- D2 Z
5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
( H& B4 X8 E. _8 s/ G: d/ t3 \6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan
; t' J8 t4 u( N; M2 Y7Kinki University School of Medicine, Osaka 589-8511, Japan : R9 E" d, L; x- f4 j( `1 c
8Izumi Municipal Hospital, Osaka 594-0071, Japan
/ z5 _. N- f. Z# u5 G! m7 x. V9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan # ~- f/ D* u, @" M+ i
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
" F. o7 [ Y B6 H8 qAbstractBackground: 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.
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