Adult onset neurodegenerative disorder
Gene: DNMT1Additional functional evidence: PMID: 31984424 - Maresca et al - studied the effects of different DNMT1 mutations in fibroblasts from four Autosomal Dominant Cerebellar Ataxia-Deafness and Narcolepsy (ADCA-DN) and two Hereditary Sensory Neuropathy with Dementia and Hearing loss (HSN-IE) patients who were unrelated. They found mitochondrial hyper-function that resulted in increased oxidative stress but no change in mitochondrial DNA CpG methylation. They demonstrated that DNMT1 is not localized within mitochondria, but it is associated to the mitochondrial outer membrane. AMPK and mTORC1, the two major sensors of cellular energy, were implicated in the pathogenic mechanism of the most severe DNMT1 mutations.Created: 1 Sep 2020, 4:27 p.m. | Last Modified: 1 Sep 2020, 4:27 p.m.
Panel Version: 2.15
Publications
ADCADN is an autosomal dominant neurologic disorder characterized by adult onset of progressive cerebellar ataxia, narcolepsy/cataplexy, sensorineural deafness, and dementia. >3 families - greenCreated: 2 Sep 2019, 4:06 p.m. | Last Modified: 2 Sep 2019, 4:06 p.m.
Panel Version: 1.99
Mode of inheritance
MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
Phenotypes
Dementia, Deafness, and Sensory Neuropathy; Cerebellar ataxia, deafness, and narcolepsy, autosomal dominant,
Adult onset (thirties to forties).Created: 23 Jul 2019, 3:35 p.m. | Last Modified: 23 Jul 2019, 3:35 p.m.
Panel Version: 1.72
Mode of inheritance
MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
Phenotypes
Dementia, Deafness, and Sensory Neuropathy; Cerebellar ataxia, deafness, and narcolepsy, autosomal dominant
Publications
Variants in this GENE are reported as part of current diagnostic practice
Review and rating from Tracy Lester (Oxford Medical Genetics Laboratories Oxford University Hospitals NHS Foundation Trust) on behalf of Wessex and West Midlands GLH for GMS Neurology specialist test group. All the green and amber, except for the genes with triplet repeats, were reviewed.Created: 2 Sep 2019, 4:46 p.m. | Last Modified: 2 Sep 2019, 4:46 p.m.
Panel Version: 1.101
Review and rating submitted by Nick Beauchamp (Sheffield Diagnostic genetics Service), on behalf of Yorkshire and North East GLH for GMS Neurology specialist test group.Created: 23 Jul 2019, 3:51 p.m. | Last Modified: 23 Jul 2019, 3:51 p.m.
Panel Version: 1.74
Review and rating submitted byJames Polke (North Bristol NHS Trust), unless specified in the review comment, on behalf of London North GLH for GMS Neurology specialist test group.Created: 23 Apr 2019, 5:35 p.m.
Variants in this GENE are reported as part of current diagnostic practice
Phenotypes for gene: DNMT1 were changed from Cerebellar ataxia, deafness, and narcolepsy, autosomal dominant, OMIM; 604121 to Cerebellar ataxia, deafness, and narcolepsy, autosomal dominant, OMIM:604121
Phenotypes for gene: DNMT1 were changed from Dementia, Deafness, and Sensory Neuropathy; Cerebellar ataxia, deafness, and narcolepsy, autosomal dominant, to Cerebellar ataxia, deafness, and narcolepsy, autosomal dominant, OMIM; 604121
Publications for gene: DNMT1 were set to 23365052; 8747854; 22328086
Source Wessex and West Midlands GLH was added to DNMT1.
Publications for gene DNMT1 were changed from 23365052 to 23365052; 8747854; 22328086
Source Yorkshire and North East GLH was added to DNMT1.
Source NHS GMS was added to DNMT1.
Source London North GLH was added to DNMT1.
Louise Daugherty: Comment on phenotypes: amended
Added phenotypes Cerebellar ataxia, deafness, and narcolepsy, autosomal dominant, for gene: DNMT1
gene: DNMT1 was added gene: DNMT1 was added to Neurodegenerative disorders - adult onset. Sources: Expert Review Green Mode of inheritance for gene: DNMT1 was set to MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown Publications for gene: DNMT1 were set to 23365052 Phenotypes for gene: DNMT1 were set to Dementia, Deafness, and Sensory Neuropathy