NF1 and neurofibromatosis type 1: Neurofibromatosis type 1 (NF1) is an autosomal dominant condition with a birth incidence of approximately 1 in 2700 and is caused by loss-of-function alterations within the NF1 gene (OMIM 613113).1 Although characterized by diverse cutaneous, skeletal, and neoplastic manifestations, cognitive deficits and behavioral problems are also common.2,3 Intelligence typically falls within the low to average range, and as many as 80% of children with NF1 experience executive dysfunction,4 inattention,5 and visuoperception deficits.2