Mixed cryoglobulinaemia vasculitis after sustained hepatitis C virological response with direct-acting antivirals.

Mixed cryoglobulinaemia (MCG) is one of the most severe extrahepatic hepatitis C virus (HCV)-associated complications, and could involve several organs, including the kidney. MCG prognosis relies on HCV response to antiviral treatment and has changed over the last years, especially after the introduction of new direct acting antivirals (DAA). MCG persistence despite sustained virological response (SVR) is uncommon and has a poorly known meaning and prognosis. We report a case of a patient with chronic HCV infection treated with DAA who developed MCG vasculitis despite the SVR.