Novel mutations in SERAC1 gene in two Indian patients presenting with dystonia and intellectual disability

Eur J Med Genet. 2018 Feb;61(2):100-103. doi: 10.1016/j.ejmg.2017.07.013. Epub 2017 Aug 1.

Abstract

In this study we present the first two cases from India of a rare inborn error of metabolism manifesting as dystonia and 3-methylglutaconic aciduria and a Leigh like lesions in the brain MRI associated with SERAC1 gene mutation, a phenotype characteristic of MEGDEL syndrome. A four base pair duplication in exon 15 i.e.NM_032861.3 (SERAC1) c. 1643_1646 dup ATCT (p.(Leu550SerfsX19)) and another with a homozygous missense variation in exon 15 i.e. NM_032861.3 (SERAC1) c.1709 G > A (p.(Gly526Glu)) were detected and both were novel mutations. Hepatopathy was observed in the neonatal period with lactic acidosis in one child and at the age of 5yrs in the other. These cases add to the existing number of patients identified till today and additional mutations in the SERAC1 gene.

Keywords: 3-Methylglutaconic acid; Exome sequencing; Hepatopathy; MEGDEL syndrome; SERAC1.

Publication types

  • Case Reports
  • Letter

MeSH terms

  • Carboxylic Ester Hydrolases / genetics*
  • Child
  • Dystonia / genetics*
  • Dystonia / pathology
  • Female
  • Humans
  • Infant
  • Intellectual Disability / genetics*
  • Intellectual Disability / pathology
  • Metabolism, Inborn Errors / genetics*
  • Metabolism, Inborn Errors / pathology
  • Mutation*
  • Phenotype
  • Syndrome

Substances

  • Carboxylic Ester Hydrolases
  • SERAC1 protein, human

Supplementary concepts

  • 3-Methylglutaconic Aciduria