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The Capital Region of Denmark - a part of Copenhagen University Hospital
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Peripheral neuropathy in hereditary spastic paraplegia caused by REEP1 variants

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SPG31 is a hereditary spastic paraplegia (HSP) caused by pathogenic variants in the REEP1 gene. The phenotype (SPG31) has occasionally been described with peripheral nervous system involvement, in additional to the gradually progressing lower limb spasticity that characterizes HSP. The objective of this study was to characterize patients with pathogenic REEP1 variants and neurophysiologically assess the extent of peripheral nerve involvement in this patient group. Thirty-eight index cases were molecular-genetically tested, yielding two previously reported pathogenic REEP1 variants and a novel missense variant, in a total of four index patients. Three of four probands and five additional family members underwent nerve conduction studies, electromyography, quantitative sensory testing, and examination of the autonomic nervous system. None of the examined patients had completely unremarkable results of peripheral nerve studies. Most showed electrophysiological signs of carpal tunnel syndrome, and one patient demonstrated a multifocal compression neuropathy. Autonomic testing revealed no severe dysfunction, and findings were limited to adrenergic function. HSP caused by pathogenic REEP1 variants may be accompanied by a generally mild and subclinical polyneuropathy with a predisposition to compression neuropathy, and should be considered in such cases.

Original languageEnglish
JournalJournal of Neurology
Volume266
Issue number3
Pages (from-to)735-744
Number of pages10
ISSN0340-5354
DOIs
Publication statusPublished - 2019

    Research areas

  • Carpal tunnel syndrome, Hereditary spastic paraplegia, Nerve conduction studies, Polyneuropathy, REEP1, SPG31, Humans, Middle Aged, Male, Carpal Tunnel Syndrome/etiology, Spastic Paraplegia, Hereditary/complications, Membrane Transport Proteins/genetics, Neural Conduction/physiology, Young Adult, Phenotype, Pedigree, Adolescent, Adult, Female, Polyneuropathies/etiology, Child

ID: 56392228