Fetal anomalies
Gene: ATAD3AThe mode of inheritance of this gene has been updated to 'BOTH monoallelic and biallelic, autosomal or pseudoautosomal' following NHS Genomic Medicine Service approval.Created: 30 Jan 2023, 4:26 p.m. | Last Modified: 30 Jan 2023, 4:26 p.m.
Panel Version: 2.10
Comment on mode of inheritance: MOI should be updated from 'Monoallelic' to 'Both mono- and biallelic' at the next GMS panel review.
At least 7 unrelated families have now been reported with biallelic SNVs in ATAD3A, including 5 families with Harel-Yoon syndrome, MIM# 617183 (PMID: 27640307; 32607449; 33845882) and 2 families with neonatal lethal pontocerebellar hypoplasia, MIM# 618810 (PMID: 29053797; 31727539). Both of these phenotypes are pertinent to this panel.Created: 5 Jul 2021, 3:18 p.m. | Last Modified: 5 Jul 2021, 3:18 p.m.
Panel Version: 1.682
PMID: 27640307 reports a recurrent de novo variant in ATAD3A in five unrelated individuals with developmental delay and hypotonia. Some individuals had peripheral neuropathy, optic atrophy and hypertrophic cardiomyopathy. A toxic gain of function mechanism was postulated. PMID: 28327206 reports an additional case with the same de novo variant. This individual had delayed motor development and hypotonia. PMID: 27640307 also reports a biallelic missense variant in siblings of distantly related parents with motor and speech delay, hypotonia, cerebellar atrophy, ataxia, seizures, muscle weakness, cataracts and optic nerve hypoplasia. There is insufficient evidence for this association at present. Therefore, this gene should be classified green with regard to monoallelic gain of function only.Created: 7 Jan 2019, 7:45 a.m.
PMID: 27640307 reports a recurrent de novo variant in ATAD3A in five unrelated individuals with developmental delay and hypotonia. Some individuals had peripheral neuropathy, optic atrophy and hypertrophic cardiomyopathy. A toxic gain of function mechanism was postulated. PMID: 28327206 reports an additional case with the same de novo variant. This individual had delayed motor development and hypotonia. PMID: 27640307 also reports a biallelic missense variant in siblings of distantly related parents with motor and speech delay, hypotonia, cerebellar atrophy, ataxia, seizures, muscle weakness, cataracts and optic nerve hypoplasia. There is insufficient evidence for this association at present. Therefore, this gene should be classified green with regard to monoallelic gain of function only.Created: 7 Jan 2019, 7:45 a.m.
Mode of inheritance
MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Phenotypes
Harel-Yoon syndrome
Publications
Mode of pathogenicity
Loss-of-function variants (as defined in pop up message) DO NOT cause this phenotype - please provide details in the comments
This gene and phenotype were reviewed during meetings at Great Ormond Street hospital in March 2019. Clinical review and curation was performed by Lyn Chitty, Anna de Burca, Rhiannon Mellis, Richard Scott, Ellen McDonagh and Rebecca Foulger. Outcome of review: Confirmed that phenotype is fetally-relevant: keep on the Fetal anomalies panel as a Green gene.Created: 4 Apr 2019, 2:03 p.m.
Comment on mode of inheritance: Changed MOI from 'Both monoallelic and biallelic' to only monoallelic, based on Anna's review: Green rating is appropriate for monoallelic inheritance only as there is currently insufficient evidence for biallelic disorder.Created: 7 Jan 2019, 11:33 a.m.
Comment on list classification: Updated rating from Amber to Green following review from Anna de Burca. Originally assigned an Amber rating because of different PAGE/DDG2P ratings for different disorders. Green rating is appropriate for monoallelic inheritance only, as stated in Anna's review.Created: 7 Jan 2019, 11:32 a.m.
'watchlist' tag added to highlight different DD-G2P ratings for this gene.Created: 8 Nov 2018, 8:56 p.m.
In the original PAGE file: rated as Confirmed for monoallelic ATAD3A disorder, and rated as Probable for biallelic ATAD3A disorder. In the original PAGE file, MOP listed as Dominant negative for monoallelic ATAD3A disorder, and listed as LOF for biallelic ATAD3A disorder.Created: 8 Nov 2018, 4:45 p.m.
Tag Q3_21_MOI was removed from gene: ATAD3A.
Source NHS GMS was added to ATAD3A. Mode of inheritance for gene ATAD3A was changed from MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted to BOTH monoallelic and biallelic, autosomal or pseudoautosomal
Publications for gene: ATAD3A were set to 27640307; 28327206
Phenotypes for gene: ATAD3A were changed from ATAD3A disorder - global developmental delay, hypotonia, optic atrophy, axonal neuropathy, and hypertrophic cardiomyopathy; ATAD3A disorder - global developmental delay, hypotonia, optic atrophy, axonal neuropathy, and hypertrophic cardiomyopathy; Harel-Yoon syndrome, 617183 to ATAD3A disorder - global developmental delay, hypotonia, optic atrophy, axonal neuropathy, and hypertrophic cardiomyopathy; Harel-Yoon syndrome, OMIM:617183; Pontocerebellar hypoplasia, hypotonia, and respiratory insufficiency syndrome, neonatal lethal, OMIM:618810
Tag watchlist was removed from gene: ATAD3A. Tag Q3_21_MOI tag was added to gene: ATAD3A.
Mode of inheritance for gene: ATAD3A was changed from MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Mode of pathogenicity for gene: ATAD3A was changed from to Loss-of-function variants (as defined in pop up message) DO NOT cause this phenotype - please provide details in the comments
Mode of inheritance for gene: ATAD3A was changed from BOTH monoallelic and biallelic, autosomal or pseudoautosomal to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Gene: atad3a has been classified as Green List (High Evidence).
Publications for gene: ATAD3A were set to
Phenotypes for gene: ATAD3A were changed from ATAD3A disorder - global developmental delay, hypotonia, optic atrophy, axonal neuropathy, and hypertrophic cardiomyopathy; ATAD3A disorder - global developmental delay, hypotonia, optic atrophy, axonal neuropathy, and hypertrophic cardiomyopathy to ATAD3A disorder - global developmental delay, hypotonia, optic atrophy, axonal neuropathy, and hypertrophic cardiomyopathy; ATAD3A disorder - global developmental delay, hypotonia, optic atrophy, axonal neuropathy, and hypertrophic cardiomyopathy; Harel-Yoon syndrome, 617183
Tag watchlist tag was added to gene: ATAD3A.
Added phenotypes ATAD3A disorder - global developmental delay, hypotonia, optic atrophy, axonal neuropathy, and hypertrophic cardiomyopathy for gene: ATAD3A
gene: ATAD3A was added gene: ATAD3A was added to Fetal anomalies. Sources: PAGE DD-Gene2Phenotype,Expert Review Amber Mode of inheritance for gene: ATAD3A was set to BOTH monoallelic and biallelic, autosomal or pseudoautosomal Phenotypes for gene: ATAD3A were set to ATAD3A disorder - global developmental delay, hypotonia, optic atrophy, axonal neuropathy, and hypertrophic cardiomyopathy