Identification of a homozygous VRK1 mutation in two patients with adult-onset distal hereditary motor neuropathy.

Autor: Greenbaum, Lior, Barel, Ortal, Nikitin, Vera, Hersalis‐Eldar, Adi, Kol, Nitzan, Reznik‐Wolf, Haike, Dominissini, Dan, Pras, Elon, Dori, Amir, Hersalis-Eldar, Adi, Reznik-Wolf, Haike
Zdroj: Muscle & Nerve; Mar2020, Vol. 61 Issue 3, p395-400, 6p
Abstrakt: Background: Adult-onset hereditary motor neuropathies are caused by mutations in multiple genes. Mutations within the vaccinia-related kinase 1 (VRK1) gene were associated with a wide spectrum of recessively inherited motor neuropathies, characterized by childhood to early adulthood age of onset and an occasionally non-lower motor neuron involvement.Methods: We describe two patients with adult-onset (aged 48 and 40 years) length-dependent motor neuropathy from unrelated consanguineous families of Moroccan Jewish descent. One also demonstrated mild nocturnal respiratory difficulty and sensory symptoms. Whole-exome sequencing (WES) was performed.Results: A homozygous mutation in VRK1 (c.1160G>A (p.Arg387His)), shared by both patients, was identified. This rare mutation segregated with the disease in the two families, and was absent in 120 controls of Jewish Moroccan origin.Conclusions: Our findings support VRK1 as a causative gene for adult-onset distal hereditary motor neuropathy, and indicate its relevance for evaluation of individuals with similar motor impairment. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index