Hi Busby
Welcome to the forum, and to the unwelcome but friendly world of myeloma.
I’m sorry that I too have no direct knowledge of osteosclerotic myeloma.
However there are at least 70 different genetic abberations known to be associated with myeloma, all of which can co-exist with others. This means in effect that we all have unique experiences of myeloma, so please do not feel alone!
Best wishes
Jane