Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type0 p5 L( W) Z) f. `; E2 e. |
NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9
- l. S. o3 v4 K2 O+ Author Affiliations" w4 ]# K! C4 \3 |2 _) Q
7 g7 z& {: X8 @% n | l1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan 7 T, X4 E4 j* `3 G' s8 d! R8 E( c
2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
' a8 D* I7 @! m7 G! t4 N3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
8 |' e7 i P$ `$ e6 R+ ~4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan : p/ Y5 N( u X7 i- ]7 `& K$ |
5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan 8 J" x8 B. a- H: b" S( F
6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan
' ?. r4 [3 } G( o7Kinki University School of Medicine, Osaka 589-8511, Japan
; u2 U `3 @. |# ^' B8Izumi Municipal Hospital, Osaka 594-0071, Japan
& H$ x; S4 l) H! D8 `/ K( |( r( Z9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan 3 n3 J' t8 f1 ~
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
; H6 b0 }# m9 O" {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.
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