...had the same type of myeloma I have. Mine is fairly rare, in that it is caused by the kappa light chain, not the lambda light chain, which is more common and more dangerous. The heavy chains can also cause myeloma as well. I am just hoping the stem cell transplant worked (I don't want to go through that again) and I stay in remission long enough for medical advances to find another way to beat it down. My next oncology appointment is coming up and I am a bit concerned about some things that don't seem quite right.