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DOI: 10.1055/s-0043-1777449
Screening for Mutations in Hereditary Cancer Susceptibility Genes in a Region with High Endogamy in Brazil
Funding/Acknowledgments This study was funded by National Council for Scientific and Technological Development (CNPq); Bahia State Research Support Foundation (FAPESB); and National Institute of Medical Genetics (INAGEMP).![](https://www.thieme-connect.de/media/10.1055-s-00046370/202304/lookinside/thumbnails/10-1055-s-0043-1777449_2300074-1.jpg)
Abstract
Introduction Cancer is a multifactorial disease dependent on the influence of genetic and environmental factors. About 10% of cancers are associated with germline mutations, which predispose to a higher risk of developing cancer. Currently, the use of panels that identify susceptibility and/or association genes cancer has been increasingly used, both in clinical practice and in scientific research.
Objective To investigate genetic mutations in patients with a profile for hereditary cancer in individuals from a region of northeast Brazil, where there is a high frequency of endogenous and consanguineous marriages.
Methods A set of 17 genes (BRCA1, BRCA2, APC, TP53, PTEN, RET, VHL, RB1, CDKN2, CDH1, CHEK2, MLH1, MSH2, MSH6, MUTYH, XPA, and XPC) associated with cancer and hereditary syndromes were analyzed. Fifteen patients with a hereditary cancer profile were evaluated.
Results The pathogenic variant found was c.1187G > A (p.Gly396Asp), rs36053993 in the MUTYH gene in a male patient diagnosed with melanoma at the age of 43 years and a family history for this tumor. This gene encodes an important enzyme related to DNA repair and has been associated with other types of cancer, this is the first report of an association with melanoma, the biological plausibility of this association is given once the MUTYH protein is expressed in the skin tissue and is responsible for repairing damage caused, for example, by sun exposure.
Conclusion The results of this study suggest that this mutation may be important for the hereditary predisposition to melanoma, but a broader investigation of this mutation is needed.
Authors' Contribution
All authors made substantial contributions to the intellectual content of this article.
Publication History
Article published online:
08 December 2023
© 2023. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/)
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