Journal article

Clinical, biochemical, and genetic features of four patients with short-chain enoyl-CoA hydratase (ECHS1) deficiency.

Patricia E Fitzsimons, Charlotte L Alston, Penelope E Bonnen, Joanne Hughes, Ellen Crushell, Michael T Geraghty, Martine Tetreault, Peter O'Reilly, Eilish Twomey, Yusra Sheikh, Richard Walsh, Hans R Waterham, Sacha Ferdinandusse, Ronald JA Wanders, Robert W Taylor, James J Pitt, Philip D Mayne

Am J Med Genet A | Published : 2018

Abstract

Short-chain enoyl-CoA hydratase (SCEH or ECHS1) deficiency is a rare inborn error of metabolism caused by biallelic mutations in the gene ECHS1 (OMIM 602292). Clinical presentation includes infantile-onset severe developmental delay, regression, seizures, elevated lactate, and brain MRI abnormalities consistent with Leigh syndrome (LS). Characteristic abnormal biochemical findings are secondary to dysfunction of valine metabolism. We describe four patients from two consanguineous families (one Pakistani and one Irish Traveler), who presented in infancy with LS. Urine organic acid analysis by GC/MS showed increased levels of erythro-2,3-dihydroxy-2-methylbutyrate and 3-methylglutaconate (3-MG..

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