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Related Experiment Videos

Hepatitis C genotyping by denaturing high-performance liquid chromatography.

Michael Liew1, Maria Erali, Sam Page

  • 1Institute for Clinical and Experimental Pathology, ARUP Laboratories, Salt Lake City, Utah 84108-122, USA. liewm@aruplab.com

Journal of Clinical Microbiology
|January 13, 2004
PubMed
Summary

Hepatitis C virus (HCV) genotyping is crucial for patient care. This study explored denaturing high-performance liquid chromatography (dHPLC) for HCV genotyping, achieving 96% genotype concordance but noting lower accuracy than existing methods.

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Area of Science:

  • Virology
  • Molecular Biology
  • Clinical Diagnostics

Background:

  • Hepatitis C virus (HCV) genotype determination is standard care for prognosis and treatment duration.
  • HCV's genetic diversity presents challenges for accurate and accessible testing.
  • Nucleic acid sequencing is the gold standard, but faster hybridization assays exist.

Purpose of the Study:

  • To evaluate denaturing high-performance liquid chromatography (dHPLC) as a clinical method for distinguishing HCV genotypes 1, 2, 3, and 4.
  • To assess the concordance of dHPLC with sequence analysis for HCV genotyping.

Main Methods:

  • HCV 5' untranslated region amplified by heminested multiplex reverse transcription PCR.
  • Amplicons analyzed by dHPLC and compared to sequence analysis results.

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  • Validation using 115 standard and 200 masked specimens.

    • Main Results:

    • dHPLC achieved 96% concordance at the genotype level and 87% at the subtype level.
    • This study represents the first application of dHPLC for HCV genotyping.
    • The dHPLC method showed lower accuracy compared to other reported HCV genotyping techniques.

    Conclusions:

    • dHPLC is a novel approach for HCV genotyping, demonstrating high genotype-level concordance.
    • While promising, dHPLC requires further refinement to match the accuracy of established methods for clinical application.