Myasthenic Syndrome, Congenital, 1a, Slow-Channel, also known as congenital myasthenic syndrome 1a, is related to myasthenic syndrome, congenital, 6, presynaptic and myasthenic syndrome, congenital, 4a, slow-channel. An important gene associated with Myasthenic Syndrome, Congenital, 1a, Slow-Channel is CHRNA1 (Cholinergic Receptor Nicotinic Alpha 1 Subunit), and among its related pathways/superpathways are Acetylcholine binding and downstream events and Agrin Interactions at Neuromuscular Junction. Affiliated tissues include skeletal muscle and spinal cord, and related phenotypes are high palate and upper limb muscle weakness