Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type4 V9 y2 N& X# x' E4 Q
NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9
, z R& c5 I# o5 t% l+ Author Affiliations6 O: }, F1 B& r$ Y" B' ]3 c) Z
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1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan ]) s0 `; Q9 j% L8 j- v
2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan - B# ^7 Y2 u w: D/ Z4 |! h
3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan % R7 `" o" Y4 z0 Z1 U
4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan
q4 B/ T% L( ^5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
- M3 D( u' x6 h9 r$ T6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan
* t$ k/ C: n( V _' \7Kinki University School of Medicine, Osaka 589-8511, Japan
) ~* y/ ~* M0 B ?8Izumi Municipal Hospital, Osaka 594-0071, Japan
1 j# O# W) m9 n9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan
/ H( N9 V1 C: b+ ? H- SCorrespondence 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
) ~; Y0 z! t/ G$ ~! H4 z2 n; ]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. / q8 W6 z: v3 |# G
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