Molecular classification of hepatocellular carcinoma

Area of Science:

• Oncology
• Genomics
• Molecular Biology

Background:

• Hepatocellular carcinoma (HCC) is a frequent liver cancer originating from hepatocytes.
• Cancer development involves accumulating genetic and epigenetic alterations.
• Comprehensive genomic tools are identifying molecular diversity in HCC.

Purpose of the Study:

• To review the molecular classifications of HCC.
• To highlight the role of gene mutations in HCC subgroups.
• To emphasize the need for further genomic and pathway analyses for personalized treatment.

Main Methods:

• Transcriptomic profiling
• Genetic profiling
• Chromosomal analysis
• microRNA (miRNA) profiling
• Methylation profiling

Main Results:

• Multiple molecular classifications of HCC have been described.
• Gene mutations in oncogenes and tumor suppressors are key determinants of HCC subgroups.
• Existing classifications show interrelations and highlight molecular diversity.

Conclusions:

• Understanding HCC molecular classification requires integrated genomic and pathway analyses.
• Refining HCC classification considering geographical and genetic patient diversity is essential.
• Personalized clinical treatments for HCC will benefit from improved molecular stratification.