Abstract
e16120 Background: There is limited data on clinical parameters to evaluate the therapeutic effects on immune checkpoint inhibitors (ICIs) combined with anti-angiogenic agent for uHCC. Here, we assessed efficacy and safety of camrelizumab combined with apatinib for uHCC from real-world data, and performed the retrospective subgroup analysis to investigate the potential factors related to therapy response and patients survival as well. Methods: We evaluated clinical data and outcome of 26 uHCC patients who received camrelizumab 200 mg intravenously every 2 weeks combined with apatinib 250 mg qd between May 2019 and Jul 2020. Objective response rate (ORR), disease control rate (DCR), progression free survival (PFS) and overall survival (OS) were evaluated using independent central review mRECIST and RECIST 1.1. Treatment related adverse events (TRAEs) and immune-related adverse events (irAEs) were evaluated. Results: The patients’ characteristics of our cohort are summarized in Table. Overall, our study shows that ORR was 57.7% (mRECIST), DCR was 84.62% (mRECIST), median PFS (mPFS) and OS (mOS) were 11 months and 18.2 months, respectively. For subgroup analysis, patients with first-line therapy (n=22) had dramatically better mPFS than non-first-line (15.0 vs. 4 months; p=0.01). Patients with baseline serum alpha-foetoprotein (AFP) > 400 ng/ml shows better therapeutic efficacy ( p<0.001). The patients with decreased AFP level after treatment had significantly longer mPFS (15.0 vs. 4 months; p<0.001) and mOS (NR vs. 5.7 months; p<0.001) than others. Overall, 14 (53.85%) patients had grade≥3 TRAEs, only 3 (11.54%) patients had grade≥2 irAEs. Conclusions: The first up-to-date real-world evidence indicates that both the baseline and post-treatment AFP level might be independent prognostic factors to evaluate the therapeutic efficacy and clinical outcome on the combination therapy of camrelizumab and apatinib. While larger sample sizes and longer follow-up study are needed to verify reliability of statistical results.[Table: see text]
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