Pathogenic Germline Variants in Cancer Susceptibility Genes in Children and Young Adults With Rhabdomyosarcoma.

JCO Precision Oncology
Jung KimDouglas R Stewart

Abstract

Rhabdomyosarcoma (RMS) is the most common pediatric soft-tissue sarcoma and accounts for 3% of all pediatric cancer. In this study, we investigated germline sequence and structural variation in a broad set of genes in two large, independent RMS cohorts. Genome sequencing of the discovery cohort (n = 273) and exome sequencing of the secondary cohort (n = 121) were conducted on germline DNA. Analyses were performed on 130 cancer susceptibility genes (CSG). Pathogenic or likely pathogenic (P/LP) variants were predicted using the American College of Medical Genetics and Genomics (ACMG) criteria. Structural variation and survival analyses were performed on the discovery cohort. We found that 6.6%-7.7% of patients with RMS harbored P/LP variants in dominant-acting CSG. An additional approximately 1% have structural variants (ATM, CDKN1C) in CSGs. CSG variants did not influence survival, although there was a significant correlation with an earlier age of tumor onset. There was a nonsignificant excess of P/LP variants in dominant inheritance genes in the patients with FOXO1 fusion-negative RMS patients versus the patients with FOXO1 fusion-positive RMS. We identified pathogenic germline variants in CSGs previously (TP53, NF1, DICER1, m...Continue Reading

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Citations

Jun 3, 2021·Journal of Clinical Medicine·Bailey A Martin-GiacalonePhilip J Lupo
Jul 15, 2021·Journal of Human Genetics·Hiroko FukushimaHidetoshi Takada

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Methods Mentioned

BETA
exome sequencing

Clinical Trials Mentioned

NCT00002995
NCT00919269

Software Mentioned

DELLY
Manta
MELT
OncoPrint
ANNOVAR
InterVar

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