It's only one way forward. A significant step would be to offer BRCA1 or BRCA2 mutation counselling & screening at a much earlier age at say 40 if someone else in their family has is suffering or died from it.
WebMD says:
My eldest brother died from this terrible disease almost 3 years ago so I'm potentially at significant risk if it turns out that both myself and my other living brother have a gene mutation (there may be others). As far as I know these tests are not available on the NHS but can be bought on the private diagnostics market. One treatment option that never seems to be on the list even when you might have a gene mutation is a full prostatectomy to stop the damned thing from spreading, unlike a mastectomy for women.