Karen W. Gripp, MD is the Chief of the Division of Medical Genetics at the Nemours Hospital for Children in Wilmington, DE. She is a Professor of Pediatrics at the S. Kimmel Medical College at T. Jefferson University. She is board certified in pediatrics and clinical and clinical molecular diagnostic genetics. Dr. Gripp serves as medical director for the Genetic Testing Stewardship Program and the Molecular Diagnostic Laboratory at Nemours. Her areas of particular clinical expertise include dysmorphology and RASopathies. Costello syndrome is the focus of her research and she is closely involved with the Costello syndrome family support network as the co-director of the professional advisory board. Her professional activities include membership in the ClinGen expert panels on RASopathies and on inherited cancer predisposition, membership on the board of directors for the American College of Medical Genetics and Genomics, and organizing the "D.W. Smith Workshop on Malformation and Morphogenesis". She serves as a molecular editor for GeneReviews and as the CMO for FDNA.