Nature Communications (Dec 2023)

Genetic and epigenetic features of bilateral Wilms tumor predisposition in patients from the Children’s Oncology Group AREN18B5-Q

  • Andrew J. Murphy,
  • Changde Cheng,
  • Justin Williams,
  • Timothy I. Shaw,
  • Emilia M. Pinto,
  • Karissa Dieseldorff-Jones,
  • Jack Brzezinski,
  • Lindsay A. Renfro,
  • Brett Tornwall,
  • Vicki Huff,
  • Andrew L. Hong,
  • Elizabeth A. Mullen,
  • Brian Crompton,
  • Jeffrey S. Dome,
  • Conrad V. Fernandez,
  • James I. Geller,
  • Peter F. Ehrlich,
  • Heather Mulder,
  • Ninad Oak,
  • Jamie Maciezsek,
  • Carolyn M. Jablonowski,
  • Andrew M. Fleming,
  • Prahalathan Pichavaram,
  • Christopher L. Morton,
  • John Easton,
  • Kim E. Nichols,
  • Michael R. Clay,
  • Teresa Santiago,
  • Jinghui Zhang,
  • Jun Yang,
  • Gerard P. Zambetti,
  • Zhaoming Wang,
  • Andrew M. Davidoff,
  • Xiang Chen

DOI
https://doi.org/10.1038/s41467-023-43730-0
Journal volume & issue
Vol. 14, no. 1
pp. 1 – 15

Abstract

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Abstract Developing synchronous bilateral Wilms tumor suggests an underlying (epi)genetic predisposition. Here, we evaluate this predisposition in 68 patients using whole exome or genome sequencing (n = 85 tumors from 61 patients with matched germline blood DNA), RNA-seq (n = 99 tumors), and DNA methylation analysis (n = 61 peripheral blood, n = 29 non-diseased kidney, n = 99 tumors). We determine the predominant events for bilateral Wilms tumor predisposition: 1)pre-zygotic germline genetic variants readily detectable in blood DNA [WT1 (14.8%), NYNRIN (6.6%), TRIM28 (5%), and BRCA-related genes (5%)] or 2)post-zygotic epigenetic hypermethylation at 11p15.5 H19/ICR1 that may require analysis of multiple tissue types for diagnosis. Of 99 total tumor specimens, 16 (16.1%) have 11p15.5 normal retention of imprinting, 25 (25.2%) have 11p15.5 copy neutral loss of heterozygosity, and 58 (58.6%) have 11p15.5 H19/ICR1 epigenetic hypermethylation (loss of imprinting). Here, we ascertain the epigenetic and genetic modes of bilateral Wilms tumor predisposition.