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J Neurol Sci. 2007 Dec 15;263(1-2):194-7. Epub 2007 Aug 20.

A novel point mutation in PMP22 gene in an Italian family with hereditary neuropathy with liability to pressure palsies.

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Institute of Neurological Sciences, National Research Council, Mangone (Cosenza), Italy.


Hereditary neuropathy with liability to pressure palsies (HNPP) is an autosomal dominant inherited disorder characterized by recurrent sensory or motor dysfunction. In 85% of HNPP cases the genetic defect is a 1.4 Mb deletion on chromosome 17p11.2, encompassing the PMP22 gene. Point mutations in the PMP22 gene responsible for HNPP phenotypes are rare. We investigated a 17-years-old girl who led to our detecting a novel mutation in PMP22 gene. The mutation was also detected in her father and corresponded to a deletion of one tymidine at position 11 in exon2 (c.11delT). This novel mutation creates a shift on the reading frame starting at codon 4 and leads to the introduction of a premature stop at codon 6.

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