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Neurofibromatosis type I is the most common of the three types and is caused by genetic changes in the NF1 gene located on chromosome 17 (17q11.2). This gene encodes a cytoplasmic protein known the neurofibromin, which functions as a tumor suppressor and therefore serves as a signal regulator of cell proliferation and differentiation.
Neurofibromatosis type II (also known as MISME syndrome – multiple inherited schwannomas, meningiomas, and ependymomas) is a genetic condition that may be inherited or may arise spontaneously, and causes benign tumors of the brain, spinal cord, and peripheral nerves. The types of tumors frequently associated with NF2 include vestibular ...
Café au lait spot characteristic of NF1 Diagnostic criteria of neurofibromatosis type I, requiring at least 2 of the mentioned items. [6]The following is a list of conditions and complications associated with NF-1, and, where available, age range of onset and progressive development, occurrence percentage of NF-1 population, method of earliest diagnosis, and treatments and related medical ...
A neurofibroma is a benign nerve-sheath tumor in the peripheral nervous system.In 90% of cases, they are found as stand-alone tumors (solitary neurofibroma, solitary nerve sheath tumor [1] or sporadic neurofibroma [1]), while the remainder are found in persons with neurofibromatosis type I (NF1), an autosomal-dominant genetically inherited disease.
Main symptoms of neurofibromatosis type I [28] Mutations in NF1 are primarily associated with neurofibromatosis type 1 (NF1, also known as von Recklinghausen syndrome). [6] [7] NF1 is the most common single gene disorder in humans, occurring in about 1 in 2500–3000 births worldwide. [29]
Main symptoms of neurofibromatosis type I. [7] Diagnostic criteria of neurofibromatosis type I, requiring at least 2 of the mentioned items. [8] Neurofibromatosis type 1 is the most common phakomatosis and it affects approximately 1 in 2500-3000 live births. [9] It is a genetic disorder due to a germline mutation in the NF1 gene.
Neurofibromatosis type 1: NF2 Neurofibromatosis type 2: NKH Nonketotic hyperglycinemia: NLD Nonverbal learning disability: NMDs Neuronal migration disorders: NMO Neuromyelitis optica: NMS Neuroleptic malignant syndrome: NP Niemann–Pick disease: NPC1 Niemann–Pick disease, type C1 NPH Normal pressure hydrocephalus: NTD Neural tube defect ...
A genetic test is often the only way to make sure a person has Legius syndrome and not neurofibromatosis type I; the similarity of symptoms stem from the fact that the different genes affected in the two syndromes code for proteins that carry out a similar task in the same reaction pathway. [medical citation needed]