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Review
. 2020 Mar;27(2):104-110.
doi: 10.1053/j.ackd.2019.12.003.

C3 Glomerulopathy: Pathogenesis and Treatment

Syeda Behjat Ahmad  1 , Andrew S Bomback  2
Affiliations
Review

C3 Glomerulopathy: Pathogenesis and Treatment

Syeda Behjat Ahmad et al. Adv Chronic Kidney Dis. 2020 Mar.

Abstract

C3 glomerulopathy (C3G) is a rare set of kidney diseases with 2 patterns: C3 glomerulonephritis (C3GN) and dense deposit disease. Pathogenesis of both diseases is due to complement dysregulation in the alternative pathway. Acquired or genetic alterations of the regulatory proteins of the complement pathway result in C3G. Although the disease is characterized by low C3 levels in serum and C3-dominant staining by immunofluorescence on biopsy, other disease entities such as infection-related glomerulonephritis and masked monoclonal deposits can present similarly. Both the C3GN and dense deposit disease variants of C3G are progressive and recur in transplanted kidneys. Although no direct treatment is available, complement blockers are either available or in the clinical trial phase. This review will survey the pathogenesis of C3GN and current treatment options.

Keywords: Complement; Dense deposit disease; Membranoproliferative glomerulonephritis.

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