If you’ve had a negative BRCA test, it’s unlikely a mutation in a BRCA-1 or BRCA-2 gene caused your cancer. However, there could be a different genetic cause for your cancer. Each of us has between 20,000-25,000 genes. There are additional breast and ovarian cancer genes that have been discovered, and genetic testing for those also is possible. If you have a significant personal or family history of cancer, we recommend talking with you doctor to determine if additional genetic testing is warranted.