Neurofibromatosis (NF) occurs in one in 4,000 persons.
Neurofibromatosis is an autosomal dominant condition caused by a gene
on chromosome 17, which is inherited from a parent with the disease
(in half of the cases). A parent with neurofibromatosis has a 50/50
chance of having a child with the disease. Neurofibromatosis may also
be the result of a new gene change (mutation). Half of
neurofibromatosis cases are caused by a new mutation and are not inherited.