Monoclonal gammopathy of undetermined significance: Monitoring for progression

MGUS: monoclonal gammopathy of undetermined significance; SPEP: serum protein electrophoresis; FLC: free light chain; CBC: complete blood count; MM: multiple myeloma; WM: Waldenström macroglobulinemia; AL amyloidosis: immunoglobulin light chain amyloidosis; M-protein: monoclonal protein; IgG: immunoglobulin G; NT-proBNP: N-terminal prohormone of brain natriuretic peptide.