Myasthenic Syndrome, Congenital, 4c, Associated with Acetylcholine Receptor Deficiency, also known as congenital myasthenic syndrome 4c, is related to myasthenic syndrome, congenital, 4a, slow-channel and congenital myasthenic syndrome, and has symptoms including muscle cramp, facial paresis and ophthalmoparesis. An important gene associated with Myasthenic Syndrome, Congenital, 4c, Associated with Acetylcholine Receptor Deficiency is CHRNE (Cholinergic Receptor Nicotinic Epsilon Subunit), and among its related pathways/superpathways are Nanog in Mammalian ESC Pluripotency and Acetylcholine binding and downstream events. Affiliated tissues include skeletal muscle and tongue, and related phenotypes are ptosis and ophthalmoparesis