Regression
Gene: APOPT1
6 individuals from 5 unrelated families reported, presenting in late infancy or early childhood with evidence of complex IV deficiency. Phenotype varied widely. Five individuals had episodes of neurologic regression manifest as gait difficulties and spastic tetraparesis, sensorimotor polyneuropathy, and dysarthria that in some cases improved over time. The sixth individual never developed neurologic signs. Three had normal cognition and 3 had impaired cognition. Brain imaging showed a cavitating leukodystrophy, predominantly affecting the posterior cerebral white matter and corpus callosum, that stabilized or even improved over time.
Sources: Expert listCreated: 25 Oct 2020, 9:37 a.m.
Mode of inheritance
BIALLELIC, autosomal or pseudoautosomal
Phenotypes
Mitochondrial complex IV deficiency, nuclear type 17, MIM#619061
Publications
Gene: apopt1 has been classified as Green List (High Evidence).
Gene: apopt1 has been classified as Green List (High Evidence).
Gene: apopt1 has been classified as Green List (High Evidence).
gene: APOPT1 was added gene: APOPT1 was added to Regression. Sources: Expert list Mode of inheritance for gene: APOPT1 was set to BIALLELIC, autosomal or pseudoautosomal Publications for gene: APOPT1 were set to 25175347 Phenotypes for gene: APOPT1 were set to Mitochondrial complex IV deficiency, nuclear type 17, MIM#619061 Review for gene: APOPT1 was set to GREEN