Monoclonal gammopathy and neuropathy.

There is a known coexistence between polyneuropathy and monoclonal gammopathy (immunoglobulin M, immunoglobulin G, immunoglobulin A). Antibodies to several glycoconjugates of the peripheral nervous system have been found in 50-65% of patients with immunoglobulin M monoclonal proteins, and distinct clinical syndromes have been recognized. However, if no antibodies are found, a relationship between monoclonal protein and polyneuropathy is still debatable. Therapeutic intervention is generally directed at removing the autoantibodies by reducing the number of monoclonal B-cells.