Abstract
Immune checkpoint inhibitors (ICIs) and transarterial radioembolization (TARE) are now regarded as promising and versatile therapies for hepatocellular carcinoma (HCC). Combining TARE and ICIs may offer synergistic antineoplastic effects by integrating local and systemic tumor control. This review critically discusses recent preclinical evidence supporting the TARE-ICI combination strategy, completed and ongoing clinical trials, and the challenges in identifying optimal target populations and treatment protocols. A comprehensive literature search was conducted in multiple electronic databases (PubMed, Scopus, and Web of Science) from January 1999 to January 2024. The first part of the search was directed at identifying concluded studies regarding the TARE-ICIs combination. The second part aimed at identifying ongoing clinical trials exploring the Clinicaltrials.gov database. The combination of TARE and ICIs is a promising strategy, supported by preclinical evidence of immune activation post-TARE and potential synergies with ICIs. Early-phase clinical trials have reported encouraging efficacy. However, significant heterogeneity exists among these studies, particularly concerning target populations and treatment schedules. The current evidence on TARE-ICI is favorable and promising in improving outcomes of patients with HCC. Further conclusive and higher levels of evidence are pending.
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