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Rigshospitalet - a part of Copenhagen University Hospital
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Case report: ‘AARS2 leukodystrophy’

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Background: Mitochondrial alanyl-tRNA synthetase 2 gene (AARS2) related disease is a rare genetic disorder affecting mitochondrial metabolism, leading to severe cardiac disease in infants or progressive leukodystrophy in young adults. The disease is considered ultra-rare with only 39 cases of AARS2-leukodystrophy previously reported. Case presentation: We present the case of a young man of consanguineous heritage suffering from cognitive decline and progressive spasticity as well as weakness of the proximal musculature. Utilizing MRI and whole genome sequencing, the patient was diagnosed with a homozygous AARS2 missense variant (NM_020745.3:c.650C > T; p.(Pro217Leu)) and a homozygous CAPN3 variant (NM_000070.2: c.1469G > A; p.(Arg490Gln)), both variants have previously been identified in patients suffering from AARS2 related leukodystrophy and limb-girdle muscular dystrophy, respectively. Conclusions: This case report presents a case of homozygous AARS2 leukodystrophy and serves to highlight the importance of whole genome sequencing in diagnosing rare neurological diseases as well as to add to the awareness of adult onset leukodystrophies.

Original languageEnglish
Article number100782
JournalMolecular Genetics and Metabolism Reports
Volume28
ISSN2214-4269
DOIs
Publication statusPublished - Sep 2021

    Research areas

  • AARS2, Adult onset leukodystrophies, Case report, Inborn errors of metabolism, Limb-girdle muscular dystrophy, Whole genome sequencing

ID: 66857531