Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type6 D7 j. D1 N6 |9 y
NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9
* A; L R) u: @' t+ Author Affiliations& _+ d3 f b, D/ _* H
: m$ H2 [! Q/ q3 m
1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan
. B" [/ _% m9 h8 {$ c' [2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan . ?$ B$ y! a3 Q5 \( m W4 }8 l8 d
3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
) z- B/ U C* Y, x% L4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan
) E9 ?9 w9 X% j: L5 B: a5 q5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan 1 J6 m8 J/ V9 L; K' l, Q- ]1 V4 M( m
6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan * _* K4 M7 |. ~
7Kinki University School of Medicine, Osaka 589-8511, Japan # v; N* w& \" ?% |4 u
8Izumi Municipal Hospital, Osaka 594-0071, Japan 7 s) @/ l5 L5 ^8 A% `- u
9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan
' d3 r% O5 ?1 X" NCorrespondence 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 X" e: A7 t& ]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.
9 M/ |5 Q# n* c. _! L
$ t! \0 g( _" |% F5 [ |