Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type5 l$ D" z& F/ | I
NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 % Z' B1 Z8 V* ?2 I# U. n" t; F$ e
+ Author Affiliations
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1 _. C5 K: K: `: F1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan
4 a! v/ t8 r7 R {3 O4 I2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan 2 h w+ P/ s" {7 d1 c6 {
3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan : ]$ |! J8 o* f$ }
4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan
) R. }- X8 X/ q ?4 a- E# Q5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
, P6 `; \1 |( y: [5 m. R( N6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan 1 H& q6 u$ Z; S1 x! L( B' L: G4 K
7Kinki University School of Medicine, Osaka 589-8511, Japan
1 B: w# X+ Q3 L5 a3 ], F/ e8 x7 J- u3 J8Izumi Municipal Hospital, Osaka 594-0071, Japan 3 G6 M& O: ]" E) T
9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan . d& i- r7 L( v5 r6 J( B* j0 ^
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
. d+ t& U2 p) a* S" @0 `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 A, A6 Y* @: A- Q3 M. [: S' ~4 W
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