Your father died of breast cancer? That’s quite rare.
On the subject of breast cancer in women, eliminating exposure to the substance which causes these genes to mutate in the first place can prevent many more cases, reducing breast cancer rates to pre- late 60’s and later levels.
The explosion of birth control pills on the market is followed by sky rocketing breast cancer rates.
There is a lot of information coming to light on this relationship if anyone is interested in the subject. Of course, there is a lot of literature denying it as well...
I was thinking more on the line of overall cancer research.