Immune Complex-Mediated Membranoproliferative Glomerulonephritis Secondary to Primary Biliary Cholangitis: A Rare Case Report

Immune complex-mediated membranoproliferative glomerulonephritis (iMPGN) can develop in association with autoimmune diseases such as primary biliary cholangitis (PBC), a chronic cholestatic liver disease characterised by destruction of the small and medium-sized bile ducts. Although the pathogenesis cannot be clearly defined, iMPGN and PBC overlap through the activation of innate and adaptive immune cells and the production of proinflammatory mediators. In this report, the authors present a case in which iMPGN and PBC were diagnosed simultaneously.