So sorry about your situation.
I just found out yesterday my cancer is the result of what is known as the cross over effect. My dad, uncle and grandfather all had prostate cancer and apparently the gene can pass from father to daughter to cause either breast or ovarine cancer like the BRAC gene. I was stunned because no one in my family had told me and they thought they had! Apparently they had a research project started about it at the Mayo clinic.My dad passed away 3 1/2 years after diagnosis and doctors said he had one of the most aggressive forms of cancer they had ever seen. It has shocked me because I was intially told that I would make a full and complete recovery, but that was before all the roadblocks and mountains started popping up almost daily!