Endoscopic Variceal Ligation vs Carvedilol for the Prevention of First Esophageal Variceal Bleeding in Patients With HCC

Gastro-esophageal variceal bleeding is a major complication of portal hypertension (PHT) and carries a high rate of rebleeding and mortality. Hepatocellular carcinoma (HCC), a special subgroup of PHT, is the sixth most commonly diagnosed cancer and the third leading cause of cancer death worldwide. The presence of esophageal varices (EVs) in more than half of patients with HCC is associated with poor survival. Furthermore, without primary prevention strategies, nearly half of these HCC patients experience esophageal variceal bleeding (EVB). The prognosis of HCC patients with EVB is extremely poor, with a rebleeding rate of 50% and a six-week mortality rate of 26-48%, both of which are higher than those of non-HCC patients.

However, there is still a lack of evidence on how to prevent first EVB in patients with HCC with high-risk EVs. AASLD practice guidance recommends prevention of EVB and hepatic decompensation in patients with HCC should follow the same principles as those for patients without HCC, that is, nonselective beta-blocker (NSBB) therapy is recommended in patients with HCC with clinically significant portal hypertension (CSPH). Endoscopic variceal ligation (EVL) is recommended for compensated patients with high-risk EVs who have contraindications to NSBBs. However, this recommendation lacks randomized controlled trial (RCT) to support it. Our recently published RCT showed that EVL is superior to propranolol (PPL) in the primary prevention of EVB in patients with HCC with high-risk EVs. In the subgroup analysis, EVL reduces EVB and improves OS in patients with BCLC stage A/B but not in those with BCLC stage C/D.

Carvedilol, an NSBB that additionally exerts intrinsic anti-alpha-1-adrenergic activity, has been shown to reduce hepatic venous pressure gradient more than propranolol and is currently the first-line treatment for primary prophylaxis in patients with CSPH. Nevertheless, the superiority of EVL versus carvedilol as a primary prevention strategy in patients with HCC with high-risk EVs is still unknown. In this project, we will initiate an open-label RCT aiming at comparing the efficacy of EVL and carvedilol in the primary prevention of EVB in patients with HCC with high-risk EVs. We will also explore if there is any difference between the two groups in terms of other upper gastrointestinal bleeding, nonbleeding liver decompensation (such as new onset/worsening ascites, hepatic encephalopathy, spontaneous bacterial peritonitis, and hepatorenal syndrome), overall survival, adverse events, tolerability and safety. We will also compare the efficacy of EVL and carvedilol in the primary prevention of EVB in patients with HCC at different BCLC stage.

Inclusion criteria

• Patients with HCC and high-risk EVs, confirmed through imaging and clinical data (classified as F2 or F3 EVs according to Beppu et al. classification)

Exclusion criteria

• Age less than 20 years or greater than 90 years.
• History of esophageal variceal bleeding.
• Previous treatment for EVs, including EVL, endoscopic sclerotherapy, transjugular intrahepatic portosystemic shunt (TIPS), or surgical interventions.
• Use of non-selective β-blockers within two weeks prior to enrollment.
• Contraindications for non-selective β-blockers, including severe atrioventricular block, chronic obstructive pulmonary disease (COPD), asthma, poorly controlled diabetes, and severe peripheral artery disease.
• Presence of other end-stage organ diseases, including terminal cancers other than HCC, heart failure, and renal failure.
• Pregnant women.