Postsynaptic Congenital Myasthenic Syndromes, also known as congenital myasthenic syndromes, postsynaptic, is related to presynaptic congenital myasthenic syndromes and myasthenic syndrome, congenital, 19. An important gene associated with Postsynaptic Congenital Myasthenic Syndromes is RAPSN (Receptor Associated Protein Of The Synapse), and among its related pathways/superpathways are Nanog in Mammalian ESC Pluripotency and Extracellular matrix organization. Affiliated tissues include eye and skeletal muscle, and related phenotypes are abnormality of eye movement and ptosis