1. Germline mutations and new copy number variants among 40 pediatric cancer patients suspected for genetic predisposition
- Author
-
Sabrina Giglio, Gianluca De Rosa, Valentina Contestabile, Antonella Gambale, Lucia De Martino, Barbara Pasini, Lucia Quaglietta, Roberta Russo, Rita Genesio, Immacolata Andolfo, Piero Pignataro, Achille Iolascon, Mario Capasso, Rosanna Parasole, Gambale, A., Russo, Roberta, Andolfo, I., Quaglietta, L., De Rosa, G., Contestabile, Valentina, De Martino, L., Genesio, R., Pignataro, P., Giglio, S., Capasso, M., Parasole, R., Pasini, B., and Iolascon, A.
- Subjects
cancer predisposition syndrome ,Male ,0301 basic medicine ,Oncology ,medicine.medical_specialty ,Adolescent ,DNA Copy Number Variations ,genotype-phenotype relationship ,030105 genetics & heredity ,Germline ,genetic testing ,03 medical and health sciences ,Germline mutation ,Neoplasms ,Internal medicine ,cancer predisposition syndromes ,Gene duplication ,Genetics ,medicine ,Genetic predisposition ,Humans ,Genetic Predisposition to Disease ,Copy-number variation ,Child ,Alleles ,Genetic Association Studies ,Germ-Line Mutation ,Genetics (clinical) ,Genetic testing ,medicine.diagnostic_test ,business.industry ,Age Factors ,Infant ,Astrocytoma ,Genomics ,medicine.disease ,Pediatric cancer ,030104 developmental biology ,Child, Preschool ,Female ,business - Abstract
Cancer predisposition syndromes (CPS) result from germline pathogenic variants, and they are increasingly recognized in the etiology of many pediatric cancers. Herein, we report the genetic/genomic analysis of 40 pediatric patients enrolled from 2016 to 2018. Our diagnostic workflow was successful in 50% of screened cases. Overall, the proportion of CPS in our case series is 10.9% (20/184) of enrolled patients. Interestingly, 12.5% of patients achieved a conclusive diagnosis through the analysis of chromosomal imbalance. Indeed, we observed germline microdeletions/duplications of regions encompassing cancer-related genes in 50% of patients undergoing array-CGH: EIF3H duplication in a patient with infantile desmoplastic astrocytoma and low-grade Glioma; SLFN11 deletion, SOX4 duplication, and PARK2 partial deletion in three neuroblastoma patients; a PTPRD partial deletion in a child diagnosed with glioblastoma multiforme. Finally, we identified two cases due to DICER1 germline mutations.
- Published
- 2019
- Full Text
- View/download PDF