Hi Ian
Sorry to hear that you haven’t had any luck yet with treatment options, it does seem to be hit and miss, what works and what doesn’t. This seems to be the nature of myeloma.
I don’t have any direct experience myself of the drugs you mention, but wish you luck with your treatment.
Have you tried the nurses on the Helpline, they are usually pretty up date with all these new treatments?
All the best
David S