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Hepatocarcinoma: genetic and epigenetic features
Angela Lombardi1, Anna Grimaldi1, Silvia Zappavigna1
1Department of Biochemistry, Biophysics and General Pathology, University of Campania "L. Vanvitelli", Naples, Italy.
Insights
Hepatocellular carcinoma (HCC) causes 1 million deaths yearly. Identifying novel genetic and epigenetic alterations is crucial for understanding HCC development and finding new treatments.
Area of Science:
- Hepatology
- Oncology
- Molecular Biology
Background:
- Hepatocellular carcinoma (HCC) is a major global cause of cancer mortality, particularly in Asia and Africa, linked to hepatitis B and C prevalence.
- Patients often present with advanced disease due to asymptomatic cirrhosis, leading to poor prognosis and highlighting the need for improved treatments.
- Molecular understanding of HCC has advanced with genomic tools, yet identified mutations are rare and incompletely explain disease etiology.
Purpose of the Study:
- To investigate novel genetic and epigenetic alterations in hepatocellular carcinoma (HCC).
- To enhance the understanding of molecular pathogenesis in HCC.
- To identify potential new therapeutic targets and diagnostic markers for HCC.
Main Methods:
- Utilized whole genome sequencing to identify mutations associated with HCC.
- Characterized genetic and epigenetic alterations in hepatocarcinogenesis.
- Reviewed existing literature on molecular mechanisms of HCC.
Main Results:
- Various mutations linked to HCC have been identified, improving molecular insights.
- The frequency of known genetic mutations is low, explaining only a portion of HCC etiology.
- Novel genetic and epigenetic alterations are critical for hepatocarcinogenesis.
Conclusions:
- Further research into novel genetic and epigenetic alterations is essential for understanding HCC pathogenesis.
- Identifying these alterations can lead to the development of effective molecular diagnostic markers.
- Targeted drug therapies based on these discoveries hold promise for improving HCC treatment outcomes.
Abstract:
HCC is the third leading cause of cancer-related deaths worldwide, accounting for about 1 million deaths annually. The incidence of HCC is highest in Asia and Africa, where the endemic high prevalence of hepatitis B and hepatitis C strongly predisposes to the development of chronic liver disease and subsequent development of HCC. Patients with HCC generally present at an advanced stage due to compensated cirrhosis defined by the absence of pathognomonic symptoms, resulting in death within 6 to 20 months, suggesting an urgent need in treatment modalities that will dramatically decrease the mortality rate of HCC. The molecular hepatocarcinogenesis is, however, a gradual process during which genetic alterations progressively accumulate and lead to HCC through intermediate preneoplastic stages. With the advent of whole genome sequencing tools, various mutations associated with HCC have been identified, which have advanced our molecular understanding of HCC. However, the frequency of these mutations is rare, and these genetic mutations only partly explain the etiology of the disease. Better understanding and characterization of novel genetic and epigenetic alterations, which are important to hepatocarcinogenesis, may help understand the molecular pathogenesis of HCC, as well as providing novel therapeutic targets for HCC treatment. Further consideration should be given to developing more effective molecular diagnostic markers and targeted drug therapy.
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