Background: Portal hypertension (PHT) often complicates hepatocellular carcinoma (HCC) treatment and prognosis. We aimed to assess PHT's impact on AtezoBev outcomes and identify predictors of acute variceal bleeding (AVB) and clinical ascites occurrence.
Methods: A prospective cohort of 200 HCC patients treated with AtezoBev was studied alongside a retrospective cohort of 123 patients treated with Sorafenib. We assessed factors influencing progression-free survival (PFS), overall survival (OS), AVB and clinical ascites development, focusing on PHT parameters, and comparing outcomes within and between the two cohorts (time-dependent Cox model and adjusted survival curves).
Results: Among the AtezoBev cohort, 10% experienced AVB, 24% had high-risk esophageal varices (EV) and 46% vascular invasion. Median PFS and OS in the AtezoBev cohort was 5.13 and 12.2 months. AVB (HR=1.81;[95%CI:1.03-3.17]) and clinical ascites occurrence (HR=2.29;[95%CI:1.52-3.45]) were independently associated with mortality. AVB incidence was 12% at 12 months in AtezoBev patients and EV, history of AVB<6months and vascular invasion were independently associated with AVB. The Sorafenib cohort had shorter median PFS and OS, with similar AVB incidence and only EV were associated with AVB.
Conclusions: PHT-related events significantly affect not only liver decompensation but also OS in AtezoBev-treated patients. We suggest a more widespread use of NSBB to prevent liver decompensation, with intensified prophylaxis for high-risk patients.
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