Neurofibromatosis type 1—Neurofibromatosis type 1 (NF1), a.k.a. von Recklinghausen syndrome, is one of the prevalent genetic neurocutaneous disorders caused by the mutation of a tumor suppressor gene, Neurofibromin 1 [115], which inhibits the Ras protein [77]. The gene discussed is NF1; the disease is neurofibromatosis type 1.