The prevalence of BRCA1 mutation in women with familial breast cancer is p=27/169=0.1597633.
What is BRCA1?
Humans have a protein called breast cancer type 1 susceptibility protein, which is encoded by the BRCA1 gene. While invertebrate genomes might contain an ortholog, orthologs are frequently found in other vertebrate species. DNA repair is carried out by the human tumor suppressor gene BRCA1.
The total number of cases of a disease present in a population divided by the entire population is known as the prevalence rate.
Hence The prevalence of BRCA1 mutation in women with familial breast cancer is p=27/169=0.1597633.
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