PT - JOURNAL ARTICLE AU - Ramsawak, Seshma AU - Cohen, Scott AU - Linares, Andrea AU - Cavanaugh, Corey TI - IgA nephropathy: Update on pathogenesis and treatment AID - 10.3949/ccjm.92a.24105 DP - 2025 Jun 01 TA - Cleveland Clinic Journal of Medicine PG - 373--383 VI - 92 IP - 6 4099 - http://www.ccjm.org/content/92/6/373.short 4100 - http://www.ccjm.org/content/92/6/373.full SO - Cleve Clin J Med2025 Jun 01; 92 AB - The pathogenesis of immunoglobulin (Ig) A nephropathy is described through a “4-hit” model involving production of galactose-deficient IgA, production of autoantibodies to galactose-deficient IgA, and subsequent deposition of immune complexes in the kidney glomerulus. Diagnosis remains dependent on a kidney biopsy, often after hematuria or proteinuria is detected on urinalysis. The cornerstone of therapy still involves renin-angiotensin-aldosterone system inhibitors or corticosteroids; however, new therapies targeting key aspects of the pathogenesis of IgA nephropathy are being introduced.