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Updated: May 7, 2026

Targeted Next-generation Sequencing and Bioinformatics Pipeline to Evaluate Genetic Determinants of Constitutional Disease
Published on: April 4, 2018
A new mutation in MT-ND1 m.3928G>C p.V208L causes Leigh disease with infantile spasms
Carter D Wray1, Marisa W Friederich, Desiree du Sart
1Department of Pediatrics, University of Colorado, 13121 East 17th Avenue, Aurora, CO 80045, USA; Division of Pediatric Neurology, Oregon Health Sciences Center, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA.
Abstract:
New mutations in mitochondrial DNA encoded genes of complex I are rarely reported. An infant developed Leigh disease with infantile spasms. Complex I enzyme activity was deficient and response to increasing coenzyme Q concentrations was reduced. Complex I assembly was intact. A new mutation in MT-ND1 m.3928G>C p.V208L, affecting a conserved amino acid in a critical domain, part of the coenzyme Q binding pocket, was present at high heteroplasmy. The unaffected mother did not carry measurable mutant mitochondrial DNA, but concern remained for gonadal mosaicism. Prenatal testing was possible for a subsequent sibling. The ND1 p.V208L mutation causes Leigh disease.
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