1. Whole genome joint analysis reveals ATM:C.1564_1565del variant segregating with Ataxia-Telangiectasia and breast cancer.
- Author
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Ćuk, Mario, Unal, Busra, Hayes, Connor P., Walker, McKenzie, Bevanda, Anđela, Antolović, Viktorija, and Ghazani, Arezou A.
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WHOLE genome sequencing , *CEREBELLAR ataxia , *BREAST cancer , *DISEASE risk factors , *AUTOMATED teller machines - Abstract
• The study presents the first report of ATM :c.1564_1565del variant segregating with breast cancer and Ataxia-Telangiectasia (A-T) and in the same family. • This study highlights the importance of a comprehensive genomic investigation and appropriate cancer risk management of heterozygote carriers of ATM in families with A-T. • Given the age-related or moderate penetrance of ATM in breast cancer, ATM -positive family members of an affected individual with A-T are likely asymptomatic for breast or any other epithelial cancer. ATM gene is implicated in the development of breast cancer in the heterozygous state, and Ataxia-telangiectasia (A-T) in a homozygous or compound heterozygous state. Ataxia-telangiectasia (A-T) is a rare cerebellar ataxia syndrome presenting with progressive neurologic impairment, telangiectasia, and an increased risk of leukemia and lymphoma. Although the role of ATM, separately, in association with A-T and breast cancer is well documented, there is a limited number of studies investigating ATM variants when segregating with both phenotypes in the same family. Here, using joint analysis and whole genome sequencing, we investigated ATM c.1564_1565del in a family with one homozygous member presenting with A-T (OMIM # 208900) and three heterozygous members, of whom one had breast cancer (OMIM # 114480). To our knowledge, this is the first study of ATM c.1564_1565del segregation with both A-T and breast cancer phenotypes within the same kindred. This study highlights the need for a comprehensive genomic approach in the appropriate cancer risk management of heterozygote carriers of ATM in families with A-T. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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