Hepatology International

, Volume 6, Issue 4, pp 684–695

Natural history of HCV infection

Review Article

DOI: 10.1007/s12072-012-9355-6

Cite this article as:
Sarin, S.K. & Kumar, M. Hepatol Int (2012) 6: 684. doi:10.1007/s12072-012-9355-6

Abstract

Background

There is much controversy surrounding the natural history of hepatitis C virus (HCV) infection.

Aims

The aim of this review was to review the natural history of HCV infection.

Methods

Published English literature was searched via pubmed and then reviewed.

Results

Approximately, 75–85% of HCV-infected persons will progress to chronic HCV infection. The rate of chronic HCV infection is affected by a person’s age, gender, race, and viral immune response. Once chronic HCV infection develops, there are external and host factors that can increase the risk of progression of liver disease. Progression of chronic HCV infection is not linear in time, probably because many cofactors change the rate of development of fibrosis, cirrhosis, and hepatocellular carcinoma. Factors linked with aggressive disease progression include age at infection, duration of infection, heavy alcohol use, co-infections with HIV or hepatitis B virus, male sex, steatosis, insulin resistance (and factors associated with the metabolic syndrome), and host genetics. However, the relative importance of many and varied factors remains uncertain, and further research efforts should be directed toward design of predictive models for effective risk stratification. Interferon-based therapy, particularly among those achieving a sustained virologic response (SVR), is associated with improved fibrosis and inflammation scores, reduced incidence of hepatocellular carcinoma, and prolonged life expectancy.

Conclusions

Despite the progress in understanding the factors affecting the natural history of HCV infection, a great deal remains to be learnt.

Keywords

Hepatitis C Acute hepatitis C Chronic hepatitis C Natural History 

Copyright information

© Asian Pacific Association for the Study of the Liver 2012

Authors and Affiliations

  1. 1.Department of HepatologyInstitute of Liver and Biliary SciencesNew DelhiIndia

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