Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type
- B- T. `$ G& {; {0 ?NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 5 u' s/ h+ \6 ~8 I7 R; g9 e7 _: Y
+ Author Affiliations1 q. w4 i8 p' y, W E. i( p
4 \( i' O8 f! J) y% E4 U1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan 9 A% S+ N& @* r Y
2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan 1 _" @) X7 A% _2 F+ S1 Z7 R6 u/ S* O
3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan ! V q# w( I9 y/ G1 Z
4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan / I1 B2 U2 T/ s5 a$ e$ l& V
5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
: }8 H+ i3 H+ H# v6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan
1 j6 P/ c E$ b2 ]7Kinki University School of Medicine, Osaka 589-8511, Japan
* i6 V. g$ e5 {2 ]8 J6 S8Izumi Municipal Hospital, Osaka 594-0071, Japan 9 k( ?1 R& G* t9 n0 ^
9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan 4 B5 w0 M3 R/ q) A+ o7 r) |
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 : t3 P+ S: S. C+ ?; j) f. J \- x7 R
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. 0 t+ ?' y5 |* [" U3 G
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