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Mutations in BRAT1 cause autosomal recessive progressive encephalopathy: Report of a Spanish patient.

ABSTRACT: We describe a 4-year-old male child born to non-consanguineous Spanish parents with progressive encephalopathy (PE), microcephaly, and hypertonia. Whole exome sequencing revealed compound heterozygous BRAT1 mutations [c.1564G > A (p.Glu522Lys) and c.638dup (p.Val214Glyfs*189)]. Homozygous and compound heterozygous BRAT1 mutations have been described in patients with lethal neonatal rigidity and multifocal seizure syndrome (MIM# 614498). The seven previously described patients suffered from uncontrolled seizures, and all of those patients died in their first months of life. BRAT1 acts as a regulator of cellular proliferation and migration and is required for mitochondrial function. The loss of these functions may explain the cerebral atrophy observed in this case of PE. This case highlights the extraordinary potential of next generation technologies for the diagnosis of rare genetic diseases, including PE. Making a prompt diagnosis of PE is important for genetic counseling and disease management.

SUBMITTER: Fernandez-Jaen A 

PROVIDER: S-EPMC4979314 | biostudies-literature | 2016 May

REPOSITORIES: biostudies-literature

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Mutations in BRAT1 cause autosomal recessive progressive encephalopathy: Report of a Spanish patient.

Fernández-Jaén Alberto A   Álvarez Sara S   So Eui Young EY   Ouchi Toru T   Jiménez de la Peña Mar M   Duat Anna A   Fernández-Mayoralas Daniel Martín DM   Fernández-Perrone Ana Laura AL   Albert Jacobo J   Calleja-Pérez Beatriz B  

European journal of paediatric neurology : EJPN : official journal of the European Paediatric Neurology Society 20160221 3

We describe a 4-year-old male child born to non-consanguineous Spanish parents with progressive encephalopathy (PE), microcephaly, and hypertonia. Whole exome sequencing revealed compound heterozygous BRAT1 mutations [c.1564G > A (p.Glu522Lys) and c.638dup (p.Val214Glyfs*189)]. Homozygous and compound heterozygous BRAT1 mutations have been described in patients with lethal neonatal rigidity and multifocal seizure syndrome (MIM# 614498). The seven previously described patients suffered from uncon  ...[more]

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