Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type
$ Q6 \3 \' x! ZNOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 9 z3 Q% w0 x! j8 Y: p( P
+ Author Affiliations5 P. H2 J; n1 X% a) o i/ _
7 ?, i1 L2 S# T1 s0 h1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan ! a; o h. a. G5 i% Z
2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
9 r0 T0 R& F7 E( W5 p- e# q9 B3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
8 @4 Z1 ^; y4 I$ t; m! i4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan
. C+ C; o) Z4 U/ s& }. d4 T5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan 8 N* q$ u# P% c
6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan
' [! o, G. p: e! A& a1 r1 n& A7Kinki University School of Medicine, Osaka 589-8511, Japan , V$ ?8 @6 P/ r& v8 L( \! ^
8Izumi Municipal Hospital, Osaka 594-0071, Japan
/ W' @3 c* }* K$ a7 _: E( b6 u9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan ' M. B1 D @- e; K! M
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
! |8 F( L% ]+ c/ U8 VAbstractBackground: 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. + @9 k* F$ r5 |
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