Junichi Soh1, Shinichi Toyooka2, Norihito Okumura3, Hiroshige Nakamura4, Masao Nakata5, Motohiro Yamashita6, Junichi Sakamoto7, Motoi Aoe8, Katsuyuki Hotta9, Satoshi Morita10, Hiroshi Date11. 1. Department of General Thoracic Surgery and Breast and Endocrinological Surgery, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8558, Japan. drjsou7@gmail.com. 2. Department of General Thoracic Surgery and Breast and Endocrinological Surgery, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8558, Japan. 3. Department of Thoracic Surgery, Kurashiki Central Hospital, Kurashiki, Japan. 4. Division of General Thoracic Surgery, Tottori University Hospital, Yonago, Japan. 5. Department of General Thoracic Surgery, Kawasaki Medical School, Kurashiki, Japan. 6. Department of Thoracic Surgery, Shikoku Cancer Center, Matsuyama, Japan. 7. Tokai Central Hospital, Kakamigahara, Japan. 8. Department of Surgery, Kagawa Prefectural Central Hospital, Takamatsu, Japan. 9. Center for Innovative Clinical Medicine, Okayama University Hospital, Okayama, Japan. 10. Department of Biomedical Statistics and Bioinformatics, Kyoto University, Kyoto, Japan. 11. Department of Thoracic Surgery, Kyoto University, Kyoto, Japan.
Abstract
BACKGROUND: Pathological stage (pStage) and histological subtype are strong determinants of the treatment strategy for non-small cell lung cancer (NSCLC). Setouchi Lung Cancer study Group (SLCG) recently reported the results of a multicenter trial (SLCG0401) indicating that paclitaxel plus carboplatin (CBDCA/PTX) as adjuvant chemotherapy does not yield better survival than uracil-tegafur (UFT) in NSCLC patients with pStage IB-IIIA disease, while stratified analyses considering the pStage and histological subtype have not been performed. METHODS: We reanalyzed the overall survival (OS) and relapse-free survival (RFS) in 402 patients who had been randomly assigned to receiveCBDCA/PTX or UFT by multivariate analysis with adjustments for the pStage and histological subtype. RESULTS: There were no significant differences in the OS or RFS between the two treatment settings either in the entire cohort (n = 402) and in some of subsets: pStage IB (n = 228), pStage II (n = 117), adenocarcinoma (AD, n = 265), and squamous cell carcinoma (SQ, n = 101). In pStage IIIA patients (n = 57), CBDCA/PTX yielded superior RFS to UFT [hazard ratio (HR) 0.44; P = 0.016]. Among the patients with non-AD and non-SQ histology (n = 36), UFT yielded both superior OS and RFS to CBDCA/PTX (HRs 0.16 and 0.23; P = 0.046 and 0.011, respectively). CONCLUSIONS: There are subsets of patients in which one or the other between UFT and CBDCA/PTX is significantly more effective. Selection of adjuvant therapy for NSCLC patients needs to be made taking into consideration the pStage and histological subtype.
RCT Entities:
BACKGROUND: Pathological stage (pStage) and histological subtype are strong determinants of the treatment strategy for non-small cell lung cancer (NSCLC). Setouchi Lung Cancer study Group (SLCG) recently reported the results of a multicenter trial (SLCG0401) indicating that paclitaxel plus carboplatin (CBDCA/PTX) as adjuvant chemotherapy does not yield better survival than uracil-tegafur (UFT) in NSCLCpatients with pStage IB-IIIA disease, while stratified analyses considering the pStage and histological subtype have not been performed. METHODS: We reanalyzed the overall survival (OS) and relapse-free survival (RFS) in 402 patients who had been randomly assigned to receive CBDCA/PTX or UFT by multivariate analysis with adjustments for the pStage and histological subtype. RESULTS: There were no significant differences in the OS or RFS between the two treatment settings either in the entire cohort (n = 402) and in some of subsets: pStage IB (n = 228), pStage II (n = 117), adenocarcinoma (AD, n = 265), and squamous cell carcinoma (SQ, n = 101). In pStage IIIApatients (n = 57), CBDCA/PTX yielded superior RFS to UFT [hazard ratio (HR) 0.44; P = 0.016]. Among the patients with non-AD and non-SQ histology (n = 36), UFT yielded both superior OS and RFS to CBDCA/PTX (HRs 0.16 and 0.23; P = 0.046 and 0.011, respectively). CONCLUSIONS: There are subsets of patients in which one or the other between UFT and CBDCA/PTX is significantly more effective. Selection of adjuvant therapy for NSCLCpatients needs to be made taking into consideration the pStage and histological subtype.
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