Hello Emmy ,
I was diagnosed with lambda light chain myeloma last August following a routine blood test. My situation is totally different from yourself however as I am a relatively healthy 70 year old. My lambda light chain levels were 481 and kappa 6.3 ratio 0.013. Bone marrow showed about 60% abnormal plasma cells and I was classed as an active smouldering MM. My creatinine levels since that time however have been very up and down and are now staying above normal range and my serum light chain levels are continuing to rise , now over 1800, and haemoglobin dropping slightly. It has been decided time has come for me to start first line DRd treatment ( because of the kidney problems) which I will be doing soon. I will post on here how this goes.
Sorry for the rambling reply which probably doesn’t help you very much but I wish you well. I find people on this forum are very helpful and supportive.