Increase in serum bilirubin in HIV/hepatitis-C virus-coinfected patients on atazanavir therapy following initiation of pegylated-interferon and ribavirin

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Abstract
Atazanavir use is associated with increases in serum bilirubin. Ribavirin, used to treat hepatitis-C infection, cause hemolysis and may worsen hyperbilirubinemia. We studied HIV/hepatitis-C virus-coinfected patients who initiated hepatitis-C therapy. Hyperbilirubinemia grade 3–4 increased from 9% to 45% after the start of hepatitis-C treatment in patients who used atazanavir concomitantly. Atazanavir use and hemoglobin (Hb) drops were predictors of increases in bilirubin. A substantial proportion of patients under atazanavir-therapy experienced significant hyperbilirubinemia and jaundice following initiation of hepatitis-C therapy.