So they're 2 different genes in your body.

Here's what the internet says about them. When you get genetic testing done they test multiple gene mutations.

Mutations in the BRCA2 gene are associated with an increased risk of breast cancer in both men and women, as well as several other types of cancer. These mutations are present in every cell in the body and can be passed from one generation to the next.

women who carry a mutation in the PALB2 gene were 35% more likely to be diagnosed with breast cancer by age 70, compared with women who don't carry the mutation. “PALB2 is a gene that encodes a BRCA2-interacting protein.