Outcomes after up-front surgery and metronomic neoadjuvant chemotherapy with S-1 or UFT for early tongue squamous cell carcinoma

• DOI: 10.1007/s00784-018-2689-2
• Publication Date: 2018-10-13T10:30:15Z
• Authors: Shinichiro Kina; Toshiyuki Nakasone; Takao Kinjo; Fumikazu Nimura; Nao Sunagawa; Akira Arasaki
• Keywords: Adult; Aged, 80 and over; Male; Middle Aged; Disease-Free Survival; Neoadjuvant Therapy; Tongue Neoplasms; 3. Good health; Bleomycin; 03 medical and health sciences; Treatment Outcome; 0302 clinical medicine; Chemotherapy, Adjuvant; Antineoplastic Combined Chemotherapy Protocols; Carcinoma, Squamous Cell; Humans; Female; Prodrugs; Fluorouracil; Neoplasm Recurrence, Local; Aged; Neoplasm Staging; Retrospective Studies

Our aim was to investigate the disease-free survival in patients with tongue squamous cell carcinoma receiving metronomic neoadjuvant chemotherapy with 5-fluorouracil prodrugs (UFT or S-1) plus bleomycin compared with those who had up-front surgery retrospectively.In this retrospective study, 108 patients with stages I to II tongue squamous cell carcinoma who had undergone surgery were divided into the "surgery group" or "neoadjuvant chemotherapy group."A total of 41 patients received up-front surgery; 67 received metronomic neoadjuvant chemotherapy with UFT plus bleomycin (39) or S-1 plus bleomycin (28). The rate of disease-free survival was the primary outcome measure. Neoadjuvant 5-fluorouracil prodrugs did not correlate higher with improved disease-free survival than up-front surgery (72 and 54%, respectively; hazard ratio for recurrence or death, 0.54; 95% confidence interval [CI], 0.28 to 1.03; P = 0.06). Patients who received S-1 were more likely than those who received UFT to have pathological complete response (46% vs. 15%; P = 0.007). Neoadjuvant S-1 significantly improved disease-free survival as compared with up-front surgery (79% vs. 54%; hazard ratio, 0.41; 95% CI, 0.15 to 0.98; P = 0.04). However, neoadjuvant UFT did not improve disease-free survival as compared with up-front surgery (67% vs. 54%, respectively; hazard ratio, 0.66; 95% CI, 0.31 to 1.33; P = 0.24).Neoadjuvant S-1 chemotherapy, as compared with up-front surgery, significantly improved disease-free survival among patients with tongue squamous cell carcinoma.A choice of drugs before neoadjuvant metronomic chemotherapy is needed.