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Neurology, Vol 45, Issue 11 2018-2023, Copyright © 1995 by American Academy of Neurology
ARTICLES |
R Gouider, E LeGuern, M Gugenheim, S Tardieu, T Maisonobe, JM Leger, JM Vallat, Y Agid, P Bouche and A Brice
INSERM U289, Hopital de la Salpetriere, Paris, France.
Hereditary neuropathy with liability to pressure palsies (HNPP) is an autosomal dominant disease characterized by recurrent episodes of acute nerve palsies. We performed a clinical, electrophysiologic, and molecular study of 13 French families with HNPP associated with a chromosome 17p11.2 deletion in 36 individuals. There were electrophysiologic abnormalities in all symptomatic (n = 28) and asymptomatic (n = 8) deletion carriers, even in childhood. Bilateral delayed distal motor latency of the median nerve at the wrist, reduced sensory velocity in the palm-wrist segment, and delayed distal motor latency or reduced motor velocity in the peroneal nerve was diagnostic in at-risk relatives. This large series confirms the reliability of molecular analysis combined with a simplified electrophysiologic examination for the diagnosis of HNPP associated with 17p11.2 deletion.
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