Occurrence of Neuroblastoma among TP53 p.R337H Carriers

PLoS One. 2015 Oct 9;10(10):e0140356. doi: 10.1371/journal.pone.0140356. eCollection 2015.

Abstract

The high incidence of adrenocortical tumors and choroid plexus carcinoma in children from South and Southeastern regions of Brazil is associated with the germline p.R337H mutation of TP53 gene. The concomitant occurrence of neuroblastoma and adrenocortical tumors in pediatric patients harboring the p.R337H mutation at our institution prompted us to investigate the putative association between p.R337H and pediatric neuroblastoma. Genomic DNA samples from 83 neuroblastoma patients referred to a single institution during the period of 2000-2014 were screened for the p.R337H mutation. Available samples from carriers were investigated for both nuclear p53 accumulation and loss of heterozigosity in tumor. Clinical data were obtained from medical records in order to assess the impact of 337H allele on manifestation of the disease. Seven out 83 neuroblastoma patients (8.4%) were carriers of the TP53 p.R337H mutation in our cohort. Immunohistochemical analysis of p.R337H-positive tumors revealed nuclear p53 accumulation. Loss of heterozigosity was not found among available samples. The presence of 337H allele was associated with increased proportion of stage I tumors. Our data indicate that in addition to adrenocortical tumors, choroid plexus carcinoma, breast cancer and osteosarcoma, genetic counseling and clinical surveillance should consider neuroblastoma as a potential neoplasia affecting p.R337H carriers.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alleles
  • Child, Preschool
  • Female
  • Genes, p53 / genetics*
  • Heterozygote*
  • Humans
  • Incidence
  • Male
  • Mutation
  • Neuroblastoma / diagnosis
  • Neuroblastoma / epidemiology*
  • Neuroblastoma / genetics*
  • Polymorphism, Single Nucleotide
  • Prognosis

Grants and funding

Brazilian National Counsel of Technological and Scientific Development (www.cnpq.br), grant number 401991/2010—JAY; Coordination for the Improvement of Higher Education Personnel (www.capes.gov.br), PROCAD grant number 247/2007—JAY. JAY received a Productivity fellowship from the Brazilian National Counsel of Technological and Scientific Development (www.cnpq.br). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.