BETA - What is IgM MGUS?

What is HRSMM (High-risk Smoldering Multiple Myeloma)? What are the guidelines?
Is there a clear definition for standard-risk smoldering myeloma?
Smoldering Multiple Myeloma (SMM) Basics
How is MGUS monitored? Should I see a specialist or seek treatment?
What is MGUS? Is it cancer? How many people have MGUS, and how long can I have it?
What are the precursor conditions of multiple myeloma?
What is the role of maintenance therapy after an ASCT?
How can I prevent infection after transplant? How long will I be immunocompromised?