Fluorouracil, leucovorin, oxaliplatin, and docetaxel (FLOT) regimen in the first-line treatment of metastatic gastric cancer: A single-center experience.

Abstract

The median survival time for metastatic gastric cancer that has a poor prognosis is usually shorter than 1 year. The fluorouracil, oxaliplatin, and docetaxel (FLOT) regimen is observed to be effective in the neo-adjuvant treatment of gastric cancer. However, data on the FLOT regimen in metastatic gastric cancer are limited. The current study aims to evaluate the safety and efficacy of the FLOT regimen in metastatic gastric cancer in real life. Retrospective study. The study was performed in an Institute of Oncology of a university and included the patients diagnosed between January 2015 and December 2020. In addition to the clinicopathological data of patients with human epidermal growth factor receptor 2 (HER-2)-negative metastatic gastric cancer, we retrospectively evaluated the survival and treatment-related toxicities. The FLOT regimen (Fluorouracil 2600 mg/m2 24 hours continuous intravenous infusion, leucovorin 200 mg/m2, oxaliplatin 85 mg/m2, and docetaxel 50 mg/m2 on day 1) every 2 weeks was used in all patients. The study included 94 patients who were followed up for a median of 11.1 (min-max: 1.5-65.8) months. The number of male patients was 60 (63.4%), and the median age was 58 (min-max: 27-78) years. The primary tumor was located in the stomach (72.3%) and gastroesophageal junction (27.7%). The objective response rate was observed in 64.8% of the patients. The median overall survival was 13.5 (95% CI: 9.2-17.8) months, whereas the progression-free survival was 7 (95% CI: 5.7-8.3) months. The 1-year survival rate was 53.6%. Complete response was detected in 7.4% of the patients. Among grade 3-4 toxicities, neutropenia (44.6%), leukopenia (27.6%), neuropathy (12.7%), and fatigue (9.5%) were the most common observed toxicities. FLOT is a highly active option in the first-line treatment of metastatic gastric cancer, with a favorable safety profile.