Constitutional 11p15 abnormalities, including heritable imprinting center mutations, cause nonsyndromic Wilms tumor - PubMed (original) (raw)

. 2008 Nov;40(11):1329-34.

doi: 10.1038/ng.243. Epub 2008 Oct 5.

Jenny Douglas, Linda Baskcomb, Nikki Huxter, Karen Barker, Sandra Hanks, Alan Craft, Mary Gerrard, Janice A Kohler, Gill A Levitt, Sue Picton, Barry Pizer, Milind D Ronghe, Denise Williams; Factors Associated with Childhood Tumours (FACT) Collaboration; Jackie A Cook, Pascal Pujol, Eamonn R Maher, Jillian M Birch, Charles A Stiller, Kathy Pritchard-Jones, Nazneen Rahman

Collaborators, Affiliations

Constitutional 11p15 abnormalities, including heritable imprinting center mutations, cause nonsyndromic Wilms tumor

Richard H Scott et al. Nat Genet. 2008 Nov.

Abstract

Constitutional abnormalities at the imprinted 11p15 growth regulatory region cause syndromes characterized by disordered growth, some of which include a risk of Wilms tumor. We explored their possible contribution to nonsyndromic Wilms tumor and identified constitutional 11p15 abnormalities in genomic lymphocyte DNA from 13 of 437 individuals (3%) with sporadic Wilms tumor without features of growth disorders, including 12% of bilateral cases (P = 0.001) and in one familial Wilms tumor pedigree. No abnormality was detected in 220 controls (P = 0.006). Abnormalities identified included H19 DMR epimutations, uniparental disomy 11p15 and H19 DMR imprinting center mutations (one microinsertion and one microdeletion), thus identifying microinsertion as a new class of imprinting center mutation. Our data identify constitutional 11p15 defects as one of the most common known causes of Wilms tumor, provide mechanistic insights into imprinting disruption and reveal clinically important epigenotype-phenotype associations. The impact on clinical management dictates that constitutional 11p15 analysis should be considered in all individuals with Wilms tumor.

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