PDPN and focal segmental glomerulosclerosis: For example, podocyte‐derived podoplanin‐expressing urinary EVs were reported to be a marker for glomerular injury in diabetic mice, and urinary WT1‐expressing EVs were suggested as a non‐invasive biomarker for podocyte injury in focal segmental glomerulosclerosis (FSGS) and diabetic nephropathy (Delrue et al.