BRCA2 is a gene that provides instructions for making a protein involved in repairing damaged DNA. This protein plays a crucial role in maintaining the stability of a cell's genetic material. Mutations in the BRCA2 gene can lead to an increased risk of certain cancers, particularly breast and ovarian cancer. Individuals with harmful mutations in BRCA2 may have a significantly higher chance of developing these cancers compared to the general population. Genetic testing can identify these mutations, allowing for informed decisions regarding monitoring and preventive measures.