KCND3 and amelogenesis imperfecta type 1G: ERS was found to be linked with epilepsy and intellectual disability in another reported case of a teenage girl, whose sudden death at 16 led to the diagnosis of ERS, a de novo KCND3 V392I mutation was found in her mother, this mutation was also found in her 19-year-old sister who was found to be suffering from ERS as well [3].