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Identification and functional characterization of new missense SNPs in the coding region of the TP53 gene

F. Doffe, V. Carbonnier, M. Tissier, B. Leroy, I. Martins, JSM. Mattsson, P. Micke, S. Pavlova, S. Pospisilova, J. Smardova, AC. Joerger, KG. Wiman, G. Kroemer, T. Soussi

. 2021 ; 28 (5) : 1477-1492. [pub] 20201130

Jazyk angličtina Země Velká Británie

Typ dokumentu časopisecké články, práce podpořená grantem

Perzistentní odkaz   https://www.medvik.cz/link/bmc22012447

Grantová podpora
- Radiumhemmets Forskningsfonder (Cancer Research Foundations of Radiumhemmet)
Radiumhemmets Forskningsfonder (Cancer Research Foundations of Radiumhemmet)

Infrequent and rare genetic variants in the human population vastly outnumber common ones. Although they may contribute significantly to the genetic basis of a disease, these seldom-encountered variants may also be miss-identified as pathogenic if no correct references are available. Somatic and germline TP53 variants are associated with multiple neoplastic diseases, and thus have come to serve as a paradigm for genetic analyses in this setting. We searched 14 independent, globally distributed datasets and recovered TP53 SNPs from 202,767 cancer-free individuals. In our analyses, 19 new missense TP53 SNPs, including five novel variants specific to the Asian population, were recurrently identified in multiple datasets. Using a combination of in silico, functional, structural, and genetic approaches, we showed that none of these variants displayed loss of function compared to the normal TP53 gene. In addition, classification using ACMG criteria suggested that they are all benign. Considered together, our data reveal that the TP53 coding region shows far more polymorphism than previously thought and present high ethnic diversity. They furthermore underline the importance of correctly assessing novel variants in all variant-calling pipelines associated with genetic diagnoses for cancer.

Citace poskytuje Crossref.org

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