Journal
CLINICAL JOURNAL OF THE AMERICAN SOCIETY OF NEPHROLOGY
Volume 16, Issue 6, Pages 942-956Publisher
AMER SOC NEPHROLOGY
DOI: 10.2215/CJN.11830720
Keywords
complement; glomerulopathy; hemolytic uremic syndrome; genetic renal disease; immune complexes; human genetics; membranoproliferative glomerulonephritis (MPGN)
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Funding
- Canadian Institutes of Health Research/Kidney Research Scientist Core Education and National Training Program Early Career Investigators in Maternal, Reproductive, Child and Youth Health grant [2019KP-NIOG01]
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In the past 20 years, there have been significant advances in diagnosing and treating genetic kidney diseases caused by complement dysregulation. One major area of progress has been in understanding the genetic basis and pathophysiology of aHUS and C3-dominant glomerulopathies, leading to the development of innovative therapies that have greatly improved patient outcomes. Key genes associated with these diseases have been identified, and future directions for research are being explored.
In the past 20 years, we have witnessed tremendous advances in our ability to diagnose and treat genetic diseases of the kidney caused by complement dysregulation. Staggering progress was realized toward a better understanding of the genetic underpinnings and pathophysiology of many forms of atypical hemolytic uremic syndrome (aHUS) and C3-dominant glomerulopathies that are driven by complement system abnormalities. Many of these seminal discoveries paved the way for the design and characterization of several innovative therapies, some of which have already radically improved patients? outcomes. This review offers a broad overview of the exciting developments that have occurred in the recent past, with a particular focus on single-gene (or Mendelian), complement-driven aHUS and C3-dominant glomerulopathies that should be of interest to both nephrologists and kidney researchers. The discussion is restricted to genes with robust associations with both aHUS and C3-dominant glomerulopathies (complement factor H, complement component 3, complement factor H?related proteins) or only aHUS (complement factor B, complement factor I, and membrane cofactor protein). Key questions and challenges are highlighted, along with potential avenues for future directions.
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