Who is at high risk for developing breast cancer? Studies have shown that your risk for breast cancer is due to a combination of factors. The main factors that influence your risk include being a woman and getting older. Most breast cancers are found in women who are 50 years old or older.
What percentage of breast cancer is hereditary? Inherited genetic mutations can increase breast cancer risk
Researchers estimate that inherited genetic mutations account for between 5 and 10 percent to as many as 27 percent of all breast cancers.
Which parent carries the breast cancer gene? Everyone has two copies of the BRCA1 and BRCA2 genes, one copy inherited from their mother and one from their father. Even if a person inherits a BRCA1 or BRCA2 mutation from one parent, they still have the normal copy of the BRCA1 or BRCA2 gene from the other parent.
How likely am I to get breast cancer if my mom had it? If you’ve had one first-degree female relative (sister, mother, daughter) diagnosed with breast cancer, your risk is doubled. If two first-degree relatives have been diagnosed, your risk is 5 times higher than average.