Biallelic Loss‐of‐Function NDUFA12 Variants Cause a Wide Phenotypic Spectrum from Leigh/Leigh‐Like Syndrome to Isolated Optic Atrophy
Braga, Vinícius Lopes
Barsottini, Orlando Graziani Povoas
Taylor, Robert W.
Sallum, Juliana Maria Ferraz
Zaki, Maha S.
Haack, Tobias B.
Alkuraya, Fowzan S.
Movement Disorders Clinical Practice
John Wiley & Sons, Inc.
MetadataShow full item record
Magrinelli, F., Cali, E., Braga, V. L., Yis, U., Tomoum, H., Shamseldin, H., Raiman, J., et al. (2022). Biallelic Loss‐of‐Function NDUFA12 Variants Cause a Wide Phenotypic Spectrum from Leigh/Leigh‐Like Syndrome to Isolated Optic Atrophy. [Other]. https://doi.org/10.1002/mdc3.13398
Abstract: Background: Biallelic loss‐of‐function NDUFA12 variants have hitherto been linked to mitochondrial complex I deficiency presenting with heterogeneous clinical and radiological features in nine cases only. Objectives: To fully characterize, both phenotypically and genotypically, NDUFA12‐related mitochondrial disease. Methods: We collected data from cases identified by screening genetic databases of several laboratories worldwide and systematically reviewed the literature. Results: Nine unreported NDUFA12 cases from six pedigrees were identified, with presentation ranging from movement disorder phenotypes (dystonia and/or spasticity) to isolated optic atrophy. MRI showed basal ganglia abnormalities (n = 6), optic atrophy (n = 2), or was unremarkable (n = 1). All carried homozygous truncating NDUFA12 variants, three of which are novel. Conclusions: Our case series expands phenotype–genotype correlations in NDUFA12‐associated mitochondrial disease, providing evidence of intra‐ and inter‐familial clinical heterogeneity for the same variant. It confirms NDUFA12 variants should be included in the diagnostic workup of Leigh/Leigh‐like syndromes – particularly with dystonia – as well as isolated optic atrophy.
BRIEF REPORT, BRIEF REPORTS, NDUFA12, dystonia, optic atrophy, Leigh syndrome, phenotypic heterogeneity
Research Advisory Council ‐ Riyadh (2121053)
Wellcome Trust (WT093205MA, WT104033AIA)
External DOI: https://doi.org/10.1002/mdc3.13398
This record's DOI: https://doi.org/10.17863/CAM.79941