In this video, Richard S. Finn, MD, of the Geffen School of Medicine at UCLA, and Adam Yopp, MD, of UT Southwestern Medical Center, discuss the challenges of defining high-risk patient populations in adjuvant trials for hepatocellular carcinoma, with a focus on the IMbrave050 study evaluating atezolizumab and bevacizumab. They explore why the trial results were not maintained over time and why upcoming studies, including EMERALD-2, CheckMate-9DX, and KEYNOTE-937, may also struggle to show a benefit.