The Clinic for Special Children (CSC) is a primary pediatric and adult care and genetic research clinic located in Gordonville, Pennsylvania. The facility specializes in genetic problems of the plain sects, such as the Amish and Old Order Mennonites. It was founded in 1989. The most common genetic disorders treated by the Clinic are glutaric acidemia type I (GA1), which is common in the Amish population and maple syrup urine disease (MSUD), which has a high prevalence in the Old Order Mennonites.