Presynaptic Congenital Myasthenic Syndromes, also known as congenital myasthenic syndromes, presynaptic, is related to neuromuscular disease and myasthenic syndrome, congenital, 6, presynaptic. An important gene associated with Presynaptic Congenital Myasthenic Syndromes is SNAP25 (Synaptosome Associated Protein 25), and among its related pathways/superpathways are Transmission across Chemical Synapses and Uptake and actions of bacterial toxins. Affiliated tissues include eye, and related phenotypes are ptosis and dysphagia