Identification of genetic susceptibility to childhood: Cancer through analysis of genes in parallel

Sharon E. Plon, David A. Wheeler, Louise C. Strong, Gail E. Tomlinson, Michael Pirics, Qingchang Meng, Hannah C. Cheung, Phyllis R. Begin, Donna M. Muzny, Lora Lewis, Jaclyn A. Biegel, Richard A. Gibbs

Research output: Contribution to journalArticle

13 Scopus citations

Abstract

Clinical cancer genetic susceptibility analysis typically proceeds sequentially, beginning with the most likely causative gene. The process is time consuming and the yield is low, particularly for families with unusual patterns of cancer. We determined the results of in parallel mutation analysis of a large cancer-associated gene panel. We performed deletion analysis and sequenced the coding regions of 45 genes (8 oncogenes and 37 tumor suppressor or DNA repair genes) in 48 childhood cancer patients who also (i) were diagnosed with a second malignancy under age 30, (ii) have a sibling diagnosed with cancer under age 30, and/or (iii) have a major congenital anomaly or developmental delay. Deleterious mutations were identified in 6 of 48 (13%) families, 4 of which met the sibling criteria. Mutations were identified in genes previously implicated in both dominant and recessive childhood syndromes, including SMARCB1, PMS2, and TP53. No pathogenic deletions were identified. This approach has provided efficient identification of childhood cancer susceptibility mutations and will have greater utility as additional cancer susceptibility genes are identified. Integrating parallel analysis of large gene panels into clinical testing will speed results and increase diagnostic yield. The failure to detect mutations in 87% of families highlights that a number of childhood cancer susceptibility genes remain to be discovered.

Original languageEnglish (US)
Pages (from-to)19-25
Number of pages7
JournalCancer Genetics
Volume204
Issue number1
DOIs
StatePublished - Jan 2011

Keywords

  • Cancer susceptibility
  • Mutation analysis
  • Oncogenes
  • Rhabdoid tumors
  • Tumor suppressor genes

ASJC Scopus subject areas

  • Molecular Biology
  • Genetics
  • Cancer Research

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    Plon, S. E., Wheeler, D. A., Strong, L. C., Tomlinson, G. E., Pirics, M., Meng, Q., Cheung, H. C., Begin, P. R., Muzny, D. M., Lewis, L., Biegel, J. A., & Gibbs, R. A. (2011). Identification of genetic susceptibility to childhood: Cancer through analysis of genes in parallel. Cancer Genetics, 204(1), 19-25. https://doi.org/10.1016/j.cancergencyto.2010.11.001