I saw your post in relation to chemo and have responded on that link. Ive been on and off it for 5 years now and i haven't really had too many problems with it. Olaparib is not available in England so I cant get it unless i pay about £3000 per month. Crazy!! Its licensed in Scotland, Ireland and most of the rest of the world.
Also have you considered Lutetium 177? Apparently BRCA 2 carriers have had a good response to it. Also Pembrolizumab is an immunotherapy which BRCA 2 carries have responded to. Don't think that chemo is the last option out there. Plenty of new drugs and ongoing trials, especially for us mutants😀