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Neurofibromatosis type 2

Neurofibromatosis type 2 (NF2) is an autosomal-dominant inherited tumour predisposition syndrome caused by mutations in the NF2 gene on chromosome 22. Affected individuals develop schwannomas characteristically affecting both vestibular nerves leading to hearing loss and eventual deafness. Rehabilitation with brain stem implants and in some cases cochlear implants is improving this outcome. Schwannomas also occur on other cranial nerves, on spinal nerve roots and peripheral nerves. Meningiomas and ependymomas are other tumour features. In excess of 50% of patients represent de novo mutations and as many as 33% are mosaic for the underlying disease causing mutation. Truncating mutations (nonsense, frameshift insertions/deletions) are the most frequent germline events and cause the most severe disease, whilst single and multiple exon deletions are common and are usually associated with milder NF2. A strategy for detection of the latter is vital for a sensitive genetic analysis. NF2 represents a difficult management problem with most patients facing substantial morbidity and reduced life expectancy. Surgery remains the focus of current management although watchful waiting and occasionally radiation treatment have a role. We are seeing the advent of tailored drug therapies aimed at the genetic level and these are likely to provide huge improvements for this devastating, life limiting condition

Keywords : analysis,Chromosomes,Human,Pair 22,Deafness,diagnosis,Diagnosis,Differential,drug therapy,Ependymoma,Genetic Predisposition to Disease,genetics,Humans,Morbidity,Mutation,Neurofibromatosis 2,Neuroma,Acoustic,pathology,Peripheral Nerves,rehabilitation,Spinal Nerve Roots,surgery,Syndrome,therapy,, Type2, trigger points in neck and shoulders

Date of Publication : 2011

Authors : Evans GR;Lloyd SKW;Ramsden RT;

Organisation :

Journal of Publication : Adv Otorhinolaryngol

Pubmed Link : https://www.ncbi.nlm.nih.gov/pubmed/21358190

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