Myasthenic Syndrome, Congenital, 8, also known as congenital myasthenic syndrome 8, is related to vitreoretinal degeneration, snowflake type and seizures, sensorineural deafness, ataxia, impaired intellectual development, and electrolyte imbalance, and has symptoms including facial paresis An important gene associated with Myasthenic Syndrome, Congenital, 8 is AGRN (Agrin), and among its related pathways/superpathways are Cardiac conduction and Potassium Channels. Affiliated tissues include skeletal muscle, and related phenotypes are high palate and respiratory insufficiency