Autoantibody testing in neuromuscular disorders, part I: peripheral neuropathies

Area of Science:

• Neurology
• Immunology
• Neuroimmunology

Background:

• Numerous autoantibodies targeting peripheral nerve glycoconjugates, particularly gangliosides and glycoproteins, have been identified.
• These autoantibodies are implicated in various sensory and motor neuropathy syndromes.
• Commercial testing panels are widely promoted for evaluating neuropathies of unknown origin.

Purpose of the Study:

• To review peripheral nerve syndromes associated with autoantibodies.
• To propose a rational approach for autoantibody testing in clinical practice.

Main Methods:

• Review of existing literature on autoantibodies in peripheral neuropathies.
• Analysis of the clinical significance and diagnostic utility of these autoantibodies.

Main Results:

• Most identified autoantibodies lack specificity for distinct clinical syndromes.
• Patients with and without specific antibodies can exhibit similar neuropathy presentations.
• A definitive pathogenic role remains unproven for the majority of these autoantibodies.

Conclusions:

• While autoantibodies suggest immune-mediated peripheral nerve damage, their clinical utility is limited by lack of specificity.
• A cautious and rational approach to autoantibody testing is recommended in routine practice.
• Further research is needed to establish the pathogenic role and diagnostic value of these autoantibodies.