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  • Title: Refining the Diagnosis of Congenital Nephrotic Syndrome on Long-term Stored Tissue: c.1097G>A (p.(Arg366His)) WT1 Mutation Causing Denys Drash Syndrome.
    Author: Hillen LM, Kamsteeg EJ, Schoots J, Tiebosch AT, Speel EJ, Roemen GM, Peutz-Koostra CJ, Stumpel CT.
    Journal: Fetal Pediatr Pathol; 2016; 35(2):112-9. PubMed ID: 26882358.
    Abstract:
    Congenital nephrotic syndrome (CNS) caused by a mutation in the Wilms tumor 1 suppressor gene (WT1) is part of Denys Drash Syndrome or Frasier syndrome. In the framework of genetic counseling, the diagnosis of CNS can be refined with gene mutation studies on long-term stored formalin-fixed paraffin-embedded tissue from postmortem examination. We report a case of diffuse mesangial sclerosis with perinatal death caused by a de novo mutation in the WT1 gene in a girl with an XY-genotype. This is the first case of Denys Drash Syndrome with the uncommon missense c.1097G>A [p.(Arg366His)] mutation in the WT1 gene which has been diagnosed on long-term stored formalin-fixed paraffin-embedded tissue in 1993. This emphasizes the importance of retained and adequately stored tissue as a resource in the ongoing medical care and counseling.
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