The Link Between Breast Cancer and Genetics
Breast cancer is a type of cancer in which malignant cancer cells multiply uncontrollably to form a tumor in the breast. It is the second most common form of cancer diagnosed in women in the country. According to doctors, about five to ten percent of breast cancers are linked to genetic alterations passed from parent to child. 1. Link between genetics and breast cancer A majority of the inherited cases of breast cancer is associated with mutations in two particular genes: BRCA1 and BRCA2. Every person has copies of these two genes, whose primary function is to repair cell damage and ensure the normal growth of all breast and ovarian cells. However, sometimes, these genes contain mutations that are passed down generations. In this case, the genes don’t function normally and carry a heavy risk of breast or ovarian cancer. But BRCA1 and BRCA2 only account for 10 percent of the total breast cancer cases. While understanding the relationship between genetics and breast cancer, it is important to note that having a BRCA1 or BRCA2 mutation doesn’t mean one will surely be diagnosed with breast cancer. Researchers have noted that other mutations in specific chromosomal tags, which are known as single nucleotide polymorphisms (SNP), are typically linked to higher breast cancer risk.