Guaragna MS, Ledesma FL, Manzano VZ, Maciel-Guerra AT, Guerra-Júnior G, Silva MM, Luiz de Brito P, Palandi de Mello M. Bilateral Wilms' tumor in a child with Denys-Drash syndrome: novel frameshift variant disrupts the WT1 nuclear location signaling region.
J Pediatr Endocrinol Metab 2022;
35:837-843. [PMID:
35304980 DOI:
10.1515/jpem-2021-0673]
[Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Accepted: 02/19/2022] [Indexed: 11/15/2022]
Abstract
OBJECTIVES
Wilm's Tumor (WT) is the most common pediatric kidney cancer. Whereas most WTs are isolated, approximately 5% are associated with syndromes such as Denys-Drash (DDS), characterized by early onset nephropathy, disorders of sex development and predisposition to WT.
CASE PRESENTATION
A 46,XY patient presenting with bilateral WT and genital ambiguity without nephropathy was heterozygous for the novel c.851_854dup variant in WT1 gene sequence. This variant affects the protein generating the frameshift p.(Ser285Argfs*14) that disrupts a nuclear localization signal (NLS) region.
CONCLUSIONS
This molecular finding is compatible with the severe scenario regarding the Wilm's tumor presented by the patient even though nephropathy was absent.
Collapse