Abstract
Neurofibromatosis type 1 (NF1) is a common autosomal dominant neurocutaneous disorder with a predisposition to the development of benign and malignant tumors. Mutations in the NF1 gene result in loss of function of neurofibromin, a guanosine triphosphatase-activating protein that helps maintain the proto-oncogene Ras in its inactive form. Loss of neurofibromin results in increased proliferation and tumorigenesis. As a result, people with NF1 are at increased risk for the development of nervous and non-nervous system malignancies. Malignancy is a major source of morbidity and mortality in NF1. The natural history of NF1-associated malignancies is often different than that of their sporadic counterparts and, as such, management strategies need to be adjusted accordingly.
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