Molecular methods of hepatitis C genotyping

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Abstract
Hepatitis C virus is an RNA virus that is associated with chronic infection in the majority of people infected. Chronic infection with hepatitis C virus is the cause of significant morbidity and mortality worldwide and is associated with a large spectrum of liver disease including cirrhosis and hepatocellular carcinoma. End-stage liver disease due to chronic hepatitis C virus infection is currently the leading indication for liver transplantation in the USA. Hepatitis C virus genotyping of viral isolates circulating in the blood during chronic infection has become an important part of hepatitis C virus monitoring in chronically infected patients, and is useful as a prognostic indicator and to direct duration of therapy. This review will summarize information on hepatitis C genotyping, describe the limitations of current commercially available methods, give information on more recently developed methods, and provide a look to the future in terms of where advances in hepatitis C virus genotyping assays need to be made.

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