NPHS2 and focal segmental glomerulosclerosis: In addition, costaining of NPHS2 and podocalyxin (PODXL) of urinary podocytes in patients with MCD/FSGS (n = 8) showed that most urinary podocytes were NPHS2+PODXL− (72% ± 11%) or NPHS2+PODXL+ (24% ± 10%) positive.