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Factors associated with hepatitis C virus RNA levels in early chronic infection: the InC3 study

B Hajarizadeh1, B Grady2, K Page3

  • 1The Kirby Institute, UNSW Australia, Sydney, NSW, Australia.

Journal of Viral Hepatitis
|January 13, 2015
PubMed

Insights

Male sex, HIV co-infection, and specific genetic factors like IFNL4 rs12979860 CC genotype are linked to higher hepatitis C virus (HCV) RNA levels in early chronic infection. Understanding these associations aids in managing HCV progression.

Area of Science:

  • Hepatology
  • Virology
  • Immunology

Background:

  • Understanding hepatitis C virus (HCV) natural history is crucial for immunopathogenesis insights and clinical management.
  • Early chronic HCV infection dynamics influence long-term outcomes.

Purpose of the Study:

  • To identify host and virological factors associated with HCV RNA levels during early chronic infection.
  • To provide data for improved clinical management strategies for chronic HCV.

Main Methods:

  • Analysis of data from nine prospective cohorts of acute HCV infection (InC(3) study).
  • Inclusion of individuals with persistent HCV and detectable RNA at one year postinfection.
  • Comparison of HCV RNA levels based on host (sex, HIV status) and viral (genotype, IFNL4 genotype) factors.

Main Results:

  • Median HCV RNA levels were significantly higher in males and individuals with HIV co-infection.
  • Male sex, IFNL4 rs12979860 CC genotype, HIV co-infection, and HCV genotype G2 were independently associated with high HCV RNA levels (>5.6 log IU/mL).
  • These associations were evident as early as one year postinfection.

Conclusions:

  • Specific host factors (male sex, HIV co-infection) and viral factors (IFNL4 CC genotype, HCV G2) are linked to elevated HCV RNA levels in early chronic infection.
  • These identified factors play a role in viral load during the initial phase of chronic HCV infection.
  • Findings support personalized approaches to monitoring and managing early chronic HCV.

Keywords:
HCV genotypeHIVIFNL4 genotypeIL28B genotypecohort studysexviral load

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