Late onset of familial nephrotic syndrome associated with a compound heterozygous mutation of the podocin‐encoding gene (Case Report)

A case of two young adult brothers with nephrotic syndrome secondary to focal segmental glomerulosclerosis is reported. Steroid resistance prompted us to perform genetic studies. These showed a compound heterozygous mutation of NPHS2, the gene encoding podocin. It was composed of a missense mutation in exon 7 (A284V) and the non‐neutral polymorphism R229Q in exon 5. We review literature supporting the genetic basis of the disease.