TBC1D24 Mutations in a Sibship with Multifocal Polymyoclonus.

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TBC1D24 Mutations in a Sibship with Multifocal Polymyoclonus.

Tremor Other Hyperkinet Mov (N Y). 2017;7:452

Authors: Ngoh A, Bras J, Guerreiro R, McTague A, Ng J, Meyer E, Chong WK, Boyd S, MacLellan L, Kirkpatrick M, Kurian MA

Abstract
BACKGROUND: Advances in molecular genetic technologies have improved our understanding of genetic causes of rare neurological disorders with features of myoclonus.
CASE REPORT: A family with two affected siblings, presenting with multifocal polymyoclonus and neurodevelopmental delay, was recruited for whole-exome sequencing following unyielding diagnostic neurometabolic investigations. Compound heterozygous mutations in TBC1D24, a gene previously associated with various epilepsy phenotypes and hearing loss, were identified in both siblings. The mutations included a missense change c.457G>A (p.Glu157Lys), and a novel frameshift mutation c.545del (p.Thr182Serfs*6).
DISCUSSION: We propose that TBC1D24-related diseases should be in the differential diagnosis for children with polymyoclonus.

PMID: 28428906 [PubMed - in process]

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