congenital myasthenic syndrome 1B

Summary
Synonym
  • CMS1B
  • congenital myasthenic syndrome 1B, fast-channel
Definition
A congenital myasthenic syndrome characterized by defects in postsynaptic neuromuscular junctions with early-onset progressive muscle weakness that has_material_basis_in mutation in the CHRNA1 gene on chromosome 2q.
Super Class
autosomal dominant disease autosomal recessive disease congenital myasthenic syndrome
Disease Ontology
DOID:0110662
Related Genes
Displaying 1 entry
Gene ID Gene Symbol Description Source
1134 CHRNA1 cholinergic receptor nicotinic alpha 1 subunit
Related Glycoprotein
Displaying 1 entry
UniProt ID Protein Name Source
P02708 Acetylcholine receptor subunit alpha
The Human Phenotype Ontology
Displaying entries 11 - 20 of 32 in total
HPO ID HPO Term
HP:0002091 Restrictive ventilatory defect
HP:0010628 Facial palsy
HP:0002792 Reduced vital capacity
HP:0000961 Cyanosis
HP:0003458 EMG: myopathic abnormalities
HP:0000218 High palate
HP:0003202 Skeletal muscle atrophy
HP:0003722 Neck flexor weakness
HP:0001446 Abnormality of the musculature of the upper limbs
HP:0009077 Weakness of long finger extensor muscles
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