A retrospective study on the efficacy and safety of regorafenib alone or in combination in advanced hepatocellular carcinoma.

Abstract

e16176 Background: The earlier randomized phase III RESORCE trial and several real-world studies demonstrate that regorafenib improves overall survival (OS) in advanced hepatocellular carcinoma (HCC). This study aims to evaluate the efficacy and safety of regorafenib alone or in combinations in advanced HCC. Methods: 60 Patients with pathologically or clinically diagnosed advanced HCC were enrolled. We retrospectively analyzed the efficacy and safety of patients who received at least one cycle of regorafenib between March 7, 2019 and December 25, 2022 in the Affiliated Hospital of Nantong University and Nantong Third People's Hospital. The primary endpoints were objective response rate (ORR) and progression free survival (PFS). The secondary endpoints were overall survival (OS), disease control rate (DCR), and safety. The safety and efficacy were assessed by investigators per CTCAE v5.0 and mRECIST v1.1, respectively. Data on survival rates were calculated using the Kaplan-Meier method. Results: The average age was 62.63 years, and 95% were male. Most patients had a Child-Pugh A score (73.3%), and the proportion of patients with BCLC stage B and C classes were 41.7% and 58.3%, respectively. 3 (5%) patients received single-drug regorafenib therapy, and the remaining patients (95%) received different combination therapies, including regorafenib plus immune checkpoint inhibitors (ICIs) (10%), regorafenib combined with TACE (40%), and triple therapy (TKI, ICI, TACE) (45%). The ORR and DCR were 40% and 92%, respectively. With a median follow-up of 16.10 months (95%CI, 11.067-21.133), the median PFS was 8.4 months (95% CI, 5.597-11.203), and the median OS has not been reached. Most patients tolerated 120mg or 160mg once daily during weeks 1–3 of each 4-week cycle. 23 patients (38.33%) experienced adverse events (AEs). The most frequent AE (≥5%) included hand-foot syndrome (23.33%), diarrhea (11.67%), and fatigue (6.77%). The incidence of grade 3 AE was 3%. No grade 4 AE and new safety signals were identified. Conclusions: Regorafenib alone or in combination had a manageable safety profile and promising efficacy in advanced HCC patients.