alexa Mouse embryonic stem cell-based functional assay to evaluate mutations in BRCA2.
Genetics

Genetics

Advancements in Genetic Engineering

Author(s): Kuznetsov SG, Liu P, Sharan SK

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Abstract Individuals with mutations in breast cancer susceptibility genes BRCA1 and BRCA2 have up to an 80\% risk of developing breast cancer by the age of 70. Sequencing-based genetic tests are now available to identify mutation carriers in an effort to reduce mortality through prevention and early diagnosis. However, lack of a suitable functional assay hinders the risk assessment of more than 1,900 BRCA1 and BRCA2 variants in the Breast Cancer Information Core database that do not clearly disrupt the gene product. We have established a simple, versatile and reliable assay to test for the functional significance of mutations in BRCA2 using mouse embryonic stem cells (ES cells) and bacterial artificial chromosomes and have used it to classify 17 sequence variants. The assay is based on the ability of human BRCA2 to complement the loss of endogenous Brca2 in mouse ES cells. This technique may also serve as a paradigm for functional analysis of mutations found in other genes linked to human diseases.
This article was published in Nat Med and referenced in Advancements in Genetic Engineering

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