congenital myasthenic syndrome 9

Summary
Synonym
  • CMS9
  • congenital myasthenic syndrome 9, associated with acetylcholine receptor deficiency
Definition
A congenital myasthenic syndrome characterized by autosomal recessive inheritance of defects in postsynaptic neuromuscular junctions, reduced miniature endplate potential amplitude, proximal muscle weakness and episodic respiratory insufficiency that has_material_basis_in homozygous or compound heterozygous mutation in the MUSK gene on chromosome 9q31.
Super Class
autosomal recessive disease congenital myasthenic syndrome
Disease Ontology
DOID:0110670
MGI genotype (from TogoID)
Related Genes
Displaying 1 entry
Gene ID Gene Symbol Description Source
4593 MUSK muscle associated receptor tyrosine kinase
Displaying 1 entry
Gene ID Gene Symbol Description Source
18198 Musk muscle, skeletal, receptor tyrosine kinase
Related Glycoprotein
The Human Phenotype Ontology
Displaying entries 21 - 30 of 32 in total
HPO ID HPO Term
HP:0002650 Scoliosis
HP:0000651 Diplopia
HP:0003443 Decreased size of nerve terminals
HP:0012515 Hip flexor weakness
HP:0002875 Exertional dyspnea
HP:0001315 Reduced tendon reflexes
HP:0003484 Upper limb muscle weakness
HP:0000508 Ptosis
HP:0003402 Decreased miniature endplate potentials
HP:0005659 Thoracic kyphoscoliosis
Displaying 1 entry
Gene ID Gene Symbol Description
375790 AGRN agrin

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Acknowledgements

Supported by JST NBDC Grant Number JPMJND2204

Partly supported by NIH Common Fund Grant #1U01GM125267-01


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Last updated: April 6, 2026