What is maintenance therapy? What drugs are used for maintenance therapy and how effective are they at preventing relapse?

What is maintenance therapy? What drugs are used for maintenance therapy and how effective are they at preventing relapse?
¿Qué es la leucemia de células plasmáticas?
How long should maintenance therapy be given?
Combating Anemia, Fatigue and GI Myeloma Side Effects Through Diet

How do I know if I'm responding to a treatment? What tests are used to determine a response?
(Guest Lecture): October 2022 - Managing Side Effects of MGUS/Smoldering Myeloma Patients