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Concept
Neurofibromatosis type I
Summary
Neurofibromatosis type I (NF-1), or von Recklinghausen syndrome, is a complex multi-system human disorder caused by the mutation of Neurofibromin 1, a gene on chromosome 17 that is responsible for production of a protein (neurofibromin) which is needed for normal function in many human cell types. NF-1 causes tumors along the nervous system which can grow anywhere on the body. NF-1 is one of the most common genetic disorders and is not limited to any person's race or sex. NF-1 is an autosomal dominant disorder, which means that mutation or deletion of one copy (or allele) of the NF-1 gene is sufficient for the development of NF-1, although presentation varies widely and is often different even between relatives affected by NF-1.
there are at least 100,000 people in the U.S. and about 25,000 people in the UK who have been diagnosed with NF. Common symptoms of NF-1 include brownish-red spots in the colored part of the eye called Lisch nodules, benign skin tumors called neurofibromas, and larger benign tumors of nerves called plexiform neurofibromas, scoliosis (curvature of the spine), learning disabilities, vision disorders, mental disabilities, multiple café au lait spots and epilepsy. While some people have major complications, others with the condition can lead productive and full lives.
NF-1 is a developmental syndrome caused by germline mutations in neurofibromin, a gene that is involved in the RAS pathway (RASopathy). Due to its rarity, and to the fact that genetic diagnosis has been used only in recent years, in the past NF-1 was in some cases confused with Legius syndrome, another syndrome with vaguely similar symptoms, including cafe-au-lait spots.
NF-1 is an age-specific disease; most signs of NF-1 are visible after birth (during infancy), but many symptoms of NF-1 occur as the person ages and has hormonal changes. NF-1 was formerly known as von Recklinghausen disease, after the researcher (Friedrich Daniel von Recklinghausen) who first documented the disorder.
Official source
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