Purpose of review: This review discusses the recent evidence that intrinsic glomerular cells including podocytes, parietal epithelial cells and progenitor cells within Bowman's capsule contribute to cellular crescents.
Recent findings: Using a variety of newer molecular markers and lineage tracing experiments, investigators have clearly demonstrated that glomerular cells play a key role in the development and progression of cellular crescents in experimental and human disease.
Summary: Crescentic glomerulonephritis is associated with significant morbidity and mortality. Current therapies target the immune system. The recent finding that nonimmune cells also play a role in crescent formation highlights the need to identify alternate and complimentary therapeutic strategies.