Polyneuropathy Associated with Igm Monoclonal Gammopathy with Anti-Mag, also known as neuropathy associated with monoclonal igm antibodies to myelin-associated glycoprotein, is related to neuropathy and monoclonal gammopathy of uncertain significance. The drugs Prednisolone and Prednisolone acetate have been mentioned in the context of this disorder. Affiliated tissues include spinal cord and b cells, and related phenotypes are progressive peripheral neuropathy and impaired vibration sensation in the lower limbs