NF1, or Neurofibromatosis type 1, is a genetic disorder that primarily affects the nervous system, skin, and bones. It is caused by mutations in the NF1 gene, which is responsible for producing a protein that helps regulate cell growth. People with NF1 often develop benign tumors called neurofibromas on their nerves, as well as skin changes like café-au-lait spots. The condition can also lead to other complications, such as learning disabilities and an increased risk of certain cancers. NF1 is inherited in an autosomal dominant pattern, meaning that only one copy of the mutated gene from a parent can cause the disorder in their child.