Myasthenic Syndrome, Congenital, 18, also known as congenital myasthenic syndrome 18, is related to presynaptic congenital myasthenic syndromes and congenital myasthenic syndrome. An important gene associated with Myasthenic Syndrome, Congenital, 18 is SNAP25 (Synaptosome Associated Protein 25), and among its related pathways/superpathways are Uptake and actions of bacterial toxins and Nicotine Pathway (Dopaminergic Neuron), Pharmacodynamics. Related phenotypes are ptosis and ataxia