Alcohol and its associated liver carcinogenesis

Area of Science:

• Hepatology
• Oncology
• Gastroenterology

Background:

• Alcohol consumption is a primary driver of cirrhosis and hepatocellular carcinoma (HCC).
• Alcohol-associated HCC (aHCC) prevalence is highest in Eastern Europe and represents a growing cause of liver cancer mortality.
• Tumors are often diagnosed at advanced stages, outside of surveillance protocols.

Purpose of the Study:

• To summarize the current understanding of alcohol-associated hepatocellular carcinoma (aHCC).
• To highlight risk factors and synergistic effects contributing to aHCC.
• To outline the mechanistic pathways involved in alcohol-related hepatocarcinogenesis.

Main Methods:

• Review of existing literature on alcohol consumption and liver cancer.
• Analysis of epidemiological data on aHCC prevalence and mortality.
• Synthesis of mechanistic studies on alcohol-related hepatocarcinogenesis.

Main Results:

• Greater alcohol intake, sex, and genetic variations are key risk factors for aHCC.
• Smoking, obesity, diabetes, and other liver diseases synergistically elevate HCC risk in alcohol consumers.
• Mechanisms include acetaldehyde toxicity, oxidative stress, immune activation, and microbiome alterations.

Conclusions:

• Alcohol is a major, growing cause of HCC, often diagnosed late.
• Multiple factors interact to increase aHCC risk.
• Understanding complex pathways is vital for prevention and treatment strategies.