Details of Disease

General Information of Disease (ID: DISIRF54)

• Disease Name: RYR1-related myopathy
• Synonyms: RYR1-related myopathy
• Definition: A disorder of the musculoskeletal system caused by pathogenic variants in the RYR1 gene, which encodes the ryanodine receptor type 1 protein. These variants are associated with a variety of overlapping features characterized by symmetric proximal muscle weakness, often with pronounced facial weakness with or without dysmorphism and ophthalmoparesis/ophthalmoplegia with ptosis, bulbar weakness, significant respiratory involvement, severe neonatal hypotonia, scoliosis, orthopedic deformities including arthrogryposis, hip dislocation, club feet, and King Denborough syndrome (pectus carinatum or excavatum, short stature, joint contractures, facial and skeletal deformities), malignant hyperthermia susceptibility, anesthesia-induced rhabdomyolysis, fatigue, exercise-induced hyperthermia/exertional heat stroke, and exertional myalgia. Histologic findings on skeletal muscle biopsy reveal a wide range of structural abnormalities and can include central core disease, multiminicore disease, cone-rod myopathy, centronuclear myopathy, and congenital fiber-type disproportion.
• Disease Hierarchy:
  DISLSK9G: Congenital myopathy
  DISIRF54: RYR1-related myopathy

Molecular Interaction Atlas (MIA) of This Disease

This Disease Is Related to 1 DTT Molecule(s)

Gene Name	DTT ID	Evidence Level	Mode of Inheritance	REF
RYR1	TTU5CIX	Definitive	Autosomal recessive	[1]

This Disease Is Related to 1 DOT Molecule(s)

Gene Name	DOT ID	Evidence Level	Mode of Inheritance	REF
RYR1	OTWUB65S	Definitive	Autosomal recessive	[1]

References

• [1] Technical standards for the interpretation and reporting of constitutional copy-number variants: a joint consensus recommendation of the American College of Medical Genetics and Genomics (ACMG) and the Clinical Genome Resource (ClinGen). Genet Med. 2020 Feb;22(2):245-257. doi: 10.1038/s41436-019-0686-8. Epub 2019 Nov 6.