Intermuscular coherence as an early biomarker for amyotrophic lateral sclerosis: The protocol for a prospective,...

Area of Science:

• Neurology
• Biomarkers
• Diagnostic Tools

Background:

• Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disease.
• Early diagnosis of ALS is crucial for patient management and treatment.
• Current diagnostic criteria for ALS may not be sensitive enough for early detection.

Purpose of the Study:

• To evaluate intermuscular coherence (IMC) as a diagnostic tool and biomarker for upper motor neuron degeneration in ALS.
• To determine if IMC can improve the sensitivity and timeliness of ALS diagnosis.
• To establish a comprehensive IMC database across diverse populations.

Main Methods:

• A multicenter, prospective study involving approximately 650 participants.
• Surface electrodes and conventional electromyography (EMG) machines will be used to measure IMC in upper and lower limb muscle pairs.
• Participants will include neurotypical controls, individuals with early ALS symptoms, and patients with ALS mimics.

Main Results:

• The study aims to determine if incorporating IMC into the Awaji ALS criteria enhances diagnostic sensitivity for early-stage ALS.
• The research will establish a database of IMC measurements across various ages, genders, and ethnicities.
• Potential for earlier and more accurate ALS diagnosis through IMC integration.

Conclusions:

• This research may validate intermuscular coherence as an inexpensive, painless, and widely accessible diagnostic tool for ALS.
• The findings could lead to improved diagnostic capabilities for amyotrophic lateral sclerosis.
• IMC holds promise as a novel biomarker for upper motor neuron diseases.