Myasthenic Syndrome, Congenital, 3c, Associated with Acetylcholine Receptor Deficiency, is also known as congenital myasthenic syndrome 3c. An important gene associated with Myasthenic Syndrome, Congenital, 3c, Associated with Acetylcholine Receptor Deficiency is CHRND (Cholinergic Receptor Nicotinic Delta Subunit). Related phenotypes are ptosis and dysphagia