[Selenoprotein-related muscular dystrophy].

Area of Science:

• Neurology
• Genetics
• Biochemistry

Background:

• Selenoprotein N mutations are linked to muscular dystrophies, affecting muscle development and function.
• SEPN1 gene mutations cause a spectrum of muscle disorders, including rigid spine muscular dystrophy.
• Early diagnosis and understanding of genetic underpinnings are crucial for managing these rare conditions.

Observation:

• A pediatric patient presented with progressive neck muscle weakness, a rigid spine, and severe scoliosis.
• Genetic analysis revealed the patient was compound heterozygote for mutations in the SEPN1 gene.
• The patient's clinical presentation aligns with selenoprotein-related myopathies.

Findings:

• The patient's condition involves a specific genetic defect in the SEPN1 gene, impacting selenoprotein function.
• The progressive nature of the muscle weakness and spinal deformity highlights the severity of the condition.
• The study documents the clinical course and genetic basis of this rare muscular dystrophy.

Implications:

• N-acetylcysteine (NAC) was administered as an experimental therapeutic intervention over two years.
• Investigating the efficacy of N-acetylcysteine may offer new treatment avenues for SEPN1-related muscular dystrophies.
• This case highlights the importance of genetic testing and exploring novel therapeutic strategies for rare neuromuscular disorders.