congenital myasthenic syndrome 3A

Summary
Synonym
  • CMS3A
  • congenital myasthenic syndrome 3A, slow-channel
Definition
A congenital myasthenic syndrome characterized by autosomal dominant inheritance of postsynaptic neuromuscular junction defects resulting in prolonged synaptic currents and early-onset progressive muscle weakness that has_material_basis_in heterozygous mutation in the CHRND gene on chromosome 2q37.
Super Class
autosomal dominant disease congenital myasthenic syndrome
Disease Ontology
DOID:0110666
MGI genotype (from TogoID)
Related Genes
Displaying 1 entry
Gene ID Gene Symbol Description Source
1144 CHRND cholinergic receptor nicotinic delta subunit
Displaying 1 entry
Gene ID Gene Symbol Description Source
11447 Chrnd cholinergic receptor, nicotinic, delta polypeptide
Related Glycoprotein
Displaying 1 entry
UniProt ID Protein Name Source
Q07001 Acetylcholine receptor subunit delta
Displaying 1 entry
UniProt ID Protein Name Source
P02716 Acetylcholine receptor subunit delta
The Human Phenotype Ontology
Displaying entries 1 - 10 of 32 in total
HPO ID HPO Term
HP:0002878 Respiratory failure
HP:0001324 Muscle weakness
HP:0003547 Shoulder girdle muscle weakness
HP:0000597 Ophthalmoparesis
HP:0003403 EMG: decremental response of compound muscle action potential to repetitive nerve stimulation
HP:0009005 Weakness of the intrinsic hand muscles
HP:0002329 Drowsiness
HP:0000496 Abnormality of eye movement
HP:0003388 Easy fatigability
HP:0003803 Type 1 muscle fiber predominance
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: December 8, 2025