Association Between POEMS Syndrome and Monoclonal Gammopathy

Introduction to POEMS Syndrome

• POEMS syndrome is associated with monoclonal gammopathy, but it is distinct from MGUS and represents a separate clinical entity with unique pathophysiological mechanisms 1, 2

Characterization and Pathophysiology

• The monoclonal protein in POEMS is predominantly IgG or IgA lambda type, unlike the more variable patterns seen in MGUS 1, 2
• The monoclonal gammopathy in POEMS syndrome is directly linked to the multisystem damage through mechanisms involving both the M-protein and growth factors produced by the underlying clone 1, 2

Treatment Approaches

• Bortezomib shows efficacy in cases with renal involvement 3

Renal Manifestations

• Renal manifestations in POEMS syndrome typically present as glomerular microangiopathy, which differs from the monoclonal immunoglobulin deposition patterns seen in MGUS-related kidney diseases 4