Correction

After publication of the article [1], it has been brought to our attention that there is a nomenclature issue with this article. At the time of acceptance, the VARS2 mutation was considered equivalent to the VARS mutation. However, this has changed so that VARS2 now only refers to shorter mitochondrial sequence of valyl-tRNA synthesase containing 1093 amino acids. Therefore, in the context of this article, every usage of “VARS2” should be replaced with “VARS” when referring to the causative variant.