IgA nephropathy (IgAN) is the most common primary glomerular disease worldwide. About 25-30% of IgAN patients will progress to end-stage kidney disease in 20-25 years. Early-onset symptoms that are highly suggestive of progressive IgAN include massive proteinuria, hypertension, renal damage, glomerular sclerosis, crescent formation, and tubulointerstitial fibrosis. Progressive IgAN may progress to renal failure in a short time. Optimized supportive therapy is the fundamental treatment for progressive IgAN patients, and includes renin-angiotensin system blockers, blood pressure control, antiplatelet and anticoagulant drugs, statins, and allopurinol. In progressive IgAN patients whose clinical and pathological manifestations are more severe, active therapy may be considered including glucocorticoid therapy, cyclophosphamide, azathioprine, mycophenolate mofetil, tacrolimus, and other immunosuppressants. However, there are currently controversies on the definition and treatment of progressive IgAN.
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