Dystonia - complex

Gene: ATP5G3

Green List (high evidence)

Note that HGNC approved gene name is ATP5MC3.

PMID: 34636445 reports a missense variant identified in a large single-family pedigree with dystonia and spastic paraplegia. The variant was identified via exome sequencing of the proband and a distant cousin, focussing on variants within the previously determined linkage region. The identical missense variant was also identified in a patient with childhood onset dystonic syndrome and was shown to be de novo. Functional studies of fibroblast cell lines from affected father (HSP) and proband of large family demonstrated decreased complex V function. A drosophila model containing the missense variant had reduced mobility and reduced complex V activity.

PMID: 34954817 reports de novo monoallelic missense variants in three individuals, however one of these individuals was reported in above paper. The other two patients were: (1) a-15-year-old girl with milestone delay, pyramidal signs, and generalized dystonia with prominent upper-body involvement, and (2) a 6-year-old boy with delayed psychomotor development, lower-extremity spasticity, and elevated blood lactate levels
Sources: Literature

Created: 10 Jan 2022, 2:52 a.m.

Mode of inheritance
MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted

Phenotypes
Dystonia, early-onset, and/or spastic paraplegia, MIM# 619681

Publications

• 34636445
• 34954817