For example, neurofibromatosis type 1 (Nf1) is caused by a mutation of the gene on chromosome 17 (17q11.2) that encodes neurofibromin, frequently resulting in a later diagnosis of ADHD (up to 50%, Vogel et al., 2017 and/or ASD up to 30%; Garg et al., 2013). This evidence concerns the gene NF1 and attention deficit-hyperactivity disorder.