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  • Updated 01.05.2021
  • Released 07.13.1998
  • Expires For CME 01.05.2024

Polyneuropathy associated with anti-MAG IgM antibodies

Introduction

Overview

The author reviews advances in the diagnosis and management of patients with anti-MAG neuropathy. Deposits of IgM antibodies can be detected in the small nerve fibers from glabrous skin biopsy. The author also comments on the elevated risk of malignant plasma cell dyscrasias. Patients with anti-MAG neuropathy, therefore, require serial hematologic work-up.

Historical note and terminology

Antimyelin associated glycoprotein antibodies were first described in 1980 in a patient with neuropathy and IgM monoclonal gammopathy (38; 07). More than 200 patients with this syndrome subsequently have been described. Several studies have delineated the clinical, laboratory, electrodiagnostic, immunologic, pathologic, and therapeutic aspects of this condition (37; 60; 18; 11; 63; 20; 26).

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