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Reinnervation and Neuromuscular Transmission in ALS — RANTAL  

Amyotrophic Lateral Sclerosis Clinical Trial

Official title:
Reinnervation and Neuromuscular Transmission in Patients With Amyotrophic Lateral Sclerosis

Clinical Trial Summary

The aim of this study is to describe the changes in the neuromuscular connection in patients with amyotrophic lateral sclerosis (ALS). The study consist of three substudies that have the following main hypothesis: 1. that ALS patients do not demonstrate equal capacity for muscle reinnervation and that reinnervation preserves muscle function and thereby slows down progression. 2. that blood concentrations of c-terminal agrin fragment (bCAF) reflect neuromuscular transmission deficiency and that blood concentration of neural cell adhesion molecule reflects degree of muscle denervation in patients. 3. that ALS patients with decrement when examined with repetitive nerve stimulation have more physical fatigue, slower progression, higher degree of reinnervation and higher bCAF compared to ALS patients without decrement. There will be 3 inclusion groups. 1. patients referred for neurophysiological examination on suspicion of motor neuron disease. 2. healthy controls 3. disease control: patients with another motor neuron disease with slow progression. All participants will be invited for at least 1 visit (baseline). If participants in group 1 eventually receive the diagnosis of ALS they will be invited for 2 additional visits 4 og 8 months after baseline visit, respectively. Examinations will consist of: - nerve conduction study - repetitive nerve stimulation (except for healthy controls) to examine impairment of the neuromuscular connection. - motor unit number estimation with MScanFit to estimate number and size of motor units. - ultrasound examination of muscles to measure size and condition of muscles. - questionnaires on fatigue and functional status. - blood sample for measurement of specialized analysis (c-terminal agrin fragment and neural cell adhesion molecule) and routine analysis (liver and kidney function as well as neurofilament light chain) - muscle strength assessment manually and by dynamometer to follow progression of muscle weakness - bioelectrical impedance measurement to follow the overall body composition.

Clinical Trial Description

n/a

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT06219759
Study type Observational
Source University of Aarhus
Contact Jesper Storgaard, MD
Phone 004520231903
Email jesstg@rm.dk
Status Recruiting
Phase
Start date January 2024
Completion date December 2026
View Details
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