Congenital myasthenic syndrome

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Congenital myasthenic syndrome due to defective synaptic vesicles exocytosis

ORPHA:716899Etiological subtype

Also called CMS due to defective synaptic vesicles exocytosis

What it is

Orphanet has not published a description for this disease yet. The identifiers, classification and cross-references below are still current.

Key facts

Inheritance
Autosomal dominant, Autosomal recessive
Classified as
Etiological subtype

Recorded for the broader condition

Age of onset
Infancy, NeonatalPresynaptic congenital myasthenic syndrome

Orphanet records these for the broader condition rather than for this specific form. They are a starting point, not a figure for this subtype — subtypes often differ, and some are defined by being rarer than the condition they sit under.

Genes reported in subtypes

LAMA5RPH3ASNAP25SYT2UNC13AVAMP1

Orphanet records these genes on 2 more specific entries under this disorder, not on this entry itself:

A well-studied disease is usually split into subtypes, and the gene is curated on whichever one the evidence belongs to. Open a subtype to see which gene goes with it.

Cross-references

OMIM 616040OMIM 616330OMIM 618323OMIM 619461OMIM 621455

Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.

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