Notes
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Outline
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Europe: Prevalence of HIV/HBV co-infection
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Natural history of HBV infection
– where does co-infection fit in?
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Screening
  • All HBsAg+ patients should be screened for Delta virus antibodies


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Delta virus hepatitis
  • Delta virus coinfection/superinfection in 5-15% of HIV/HBV co-infected


  • Particularly in IVDUs, Eastern/Central/Southern Europe, sub-Saharan Africa


  • Often low levels of HBV DNA or HCV RNA


  • Often aggressive hepatic fibrosis
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HIV/HBV co-infection: Natural history (MACS)
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Chronic hepatitis B: Influence of HBV DNA
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Agents for treatment of hepatitis B in HIV co-infection
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Liver disease associated mortality in HIV: 1995–2003 GERMIVIC
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 Interferon treatment in HIV/HBV co-infected patients
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Rates of undetectable HBV at one year of therapy in randomized clinical trials in patients with CHB monoinfection
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Resistance development:
HBV-polymerase inhibitors
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TICO Study: TDF-containing HAART vs 3TC-containing HAART in ARV-naive HIV/HBV coinfected patients
  • Randomized Thai trial (1:1:1) of 3TC vs TDF vs 3TC/TDF within a EFV-based HAART regimen (n=36)
  • Hepatic flare in 9 (25%) patients, 4 of whom had HBe-Ag loss (2 with HBsAg seroconversion)
    • 1 died of hepatic decompensation
  • Detectable HBV viremia at Week 48 is a risk factor for future HBV resistance development (2 cases of 3TC resistance in 3TC only group)
  • Good initial anti-HBV response for all 3 arms but more resistance in the 3TC arm at wk 48
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Tenofovir vs. Tenofovir + Lamivudin
(HBV/HIV-coinfection)
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Anti-HIV activity of entecavir
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Anti-HIV activity under telbivudine?
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Initial in vitro studies on anti-HIV activity of telbivudine and entecavir
in two HIV isolates
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Treatment of chronic HBV infection in HIV-positive individuals
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News in hepatitis B
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Rapid rebound in HBV DNA in previously undetectable hepatitis B/HIV
co-infected patients switching from tenofovir to entecavir therapy
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Summary
  • Chronic hepatitis B can be found in up to 8% of all HIV-patients
  • HBV/HIV coinfected patients show a faster progression to cirrhosis and increased liver-related mortality
  • Do not forget to check for HDV superinfection
  • ARV in HIV/HBV co-infected patients should include TDF and 3TC or FTC
  • In patients with no HAART indication (>500/µl) early HAART still remains an option; alternatives are PEG-IFN, or de novo adefovir/telbivudine therapy
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Prevalence of hepatitis C in the HIV population
(1960/5957 patients = 33%)
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Hepatitis C co-infection in EuroSIDA
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Progression to cirrhosis
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PRESCO trial: design
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Ribavirin dose in Genotype 1: EVR
APRICOT (800 mg) vs PRESCO (1000–1200 mg)
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ETR response and SVR rates in PRESCO
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SVR rates in the PRESCO trial
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Proposed optimal duration of HCV therapy in
HCV/HIV co-infected patients
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Ribavirin in HIV/HCV co-infection
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Negative impact of abacavir on SVR
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NUC-free HAART may improve SVR
German multicentre study
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Rate of SVR increases with higher CD4% at baseline: APRICOT
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Summary
  • Chronic hepatitis C can be found in 30% of all HIV-patients
  • HCV/HIV coinfected patients show a faster progression to cirrhosis and increased liver-related mortality
  • With availability of pegylated interferon Hepatitis C specific treatment options should be considered before onset of immunodeficiency in HIV-coinfected patients
  • HAART should not be withheld in coinfected patients