209 Background: In Western countries, 5-FU plus leucovorin, oxaliplatin, docetaxel (DTX) (FLOT) is the standard perioperative treatment for resectable gastric adenocarcinoma and esophagogastric junction adenocarcinoma (EGJ-AC). Preoperative chemotherapy with DTX plus cisplatin and 5-FU (DCF) has been developed for esophageal squamous cell carcinoma in Japan. However, there have been few reports on the safety and efficacy of preoperative triple therapy for resectable EGJ-AC. Methods: The subjects of this retrospective study were patients (pts) with histologically confirmed resectable EGJ-AC who received preoperative DCF chemotherapy (DTX 70 mg/㎡ and cisplatin 70 mg/㎡ on day 1, and continuous infusion of 5-FU 750 mg/㎡/day on days 1–5, every 3 weeks with a maximum of three cycles) at our hospital from Jan 2015 to Apr 2020. We evaluated the completion rate of >2 courses of DCF and R0 resection in all cases, and also examined histological response, progression-free survival (PFS), overall survival (OS), and adverse events during preoperative chemotherapy. Results: Thirty-two pts were included in this study, and the median observation period was 13.1 months (3.9–57.2). Characteristics were median age (range) 63 (42–80) years, PS 0/1 66/34%, clinical stage I/IIA/IIB/III/IVA/IVB (supraclavicular lymph node) 3/13/3/10/22/32/13%. Treatment completion rate was 84%. Histological response (grade 1a/1b/2/3) was obtained in 18/8/4/1 (58/26/13/3%) pts. Median PFS (95%CI) was 16.8 months (15.0–18.5), and median OS was not reached (3-year OS rate 73.8%). Grade >3 adverse events were observed in 20(63%) pts (neutropenia in 14 [44%], febrile neutropenia in 4 [13%]). No treatment-related deaths occurred. Conclusions: Preoperative DCF chemotherapy for resectable EGJ-AC was well tolerated. Further investigation is required to evaluate the long-term efficacy of this treatment strategy.
P1-6 Preoperative docetaxel, cisplatin, and 5-FU for resectable esophagogastric junction adenocarcinoma: Retrospective study
