Journal
MEDIZINISCHE GENETIK
Volume 21, Issue 4, Pages 519-530Publisher
SPRINGER
DOI: 10.1007/s11825-009-0191-6
Keywords
Neurofibromatosis type 1; Neurocutaneous symptoms; Hereditary cancer syndrome; Neurofibromin; Ras-mediated signal transduction
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Neurofibromatosis type 1 (NF1) is an autosomal dominant disorder caused by mutations in the NF1 gene located on chromosome 17q11.2. NF1 is fully penetrant, meaning that every individual carrying the mutation exhibits symptoms of the disease, although with some considerably variable expressivity. NF1 is characterised by the eponymous neurofibromas, which are benign Schwann cell tumours. Among the other main characteristic features of NF1 are pigmentary anomalies such as cafe-au-lait spots, axillary or inguinal freckling, and Lisch nodules. NF1 is a member of the class of hereditary cancer syndromes, and patients with NF1 are at increased risk of developing specific NF1-associated tumours. These tumours are caused by the biallelic inactivation of the NF1 tumour suppressor gene, resulting in aberrant Ras regulation. Over the last few years, significant progress has been made in identifying and managing the clinical symptoms of NF1 as well as in developing novel therapeutic approaches.
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