rs761084829
Positions:
Variant summary
Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong
The NM_000053.4(ATP7B):c.994G>T(p.Glu332Ter) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★). Variant results in nonsense mediated mRNA decay.
Frequency
Genomes: not found (cov: 32)
Exomes 𝑓: 0.0 ( 0 hom. )
Failed GnomAD Quality Control
Consequence
ATP7B
NM_000053.4 stop_gained
NM_000053.4 stop_gained
Scores
2
2
3
Clinical Significance
Conservation
PhyloP100: 2.41
Genes affected
ATP7B (HGNC:870): (ATPase copper transporting beta) This gene is a member of the P-type cation transport ATPase family and encodes a protein with several membrane-spanning domains, an ATPase consensus sequence, a hinge domain, a phosphorylation site, and at least 2 putative copper-binding sites. This protein is a monomer, and functions as a copper-transporting ATPase which exports copper out of the cells, such as the efflux of hepatic copper into the bile. Alternate transcriptional splice variants, encoding different isoforms with distinct cellular localizations, have been characterized. Mutations in this gene have been associated with Wilson disease which is characterized by copper accumulation. [provided by RefSeq, Dec 2019]
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ACMG classification
Classification made for transcript
Verdict is Pathogenic. Variant got 18 ACMG points.
PVS1
?
Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
PM2
?
Very rare variant in population databases, with high coverage;
PP5
?
Variant 13-51974226-C-A is Pathogenic according to our data. Variant chr13-51974226-C-A is described in ClinVar as [Pathogenic]. Clinvar id is 553388.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
ATP7B | NM_000053.4 | c.994G>T | p.Glu332Ter | stop_gained | 2/21 | ENST00000242839.10 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
ATP7B | ENST00000242839.10 | c.994G>T | p.Glu332Ter | stop_gained | 2/21 | 1 | NM_000053.4 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
Cov.:
32
GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0AN: 1461870Hom.: 0 Cov.: 34 AF XY: 0.00 AC XY: 0AN XY: 727228
GnomAD4 exome
Data not reliable, filtered out with message: AC0
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1461870
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34
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0
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727228
Gnomad4 AFR exome
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GnomAD4 genome ? Cov.: 32
GnomAD4 genome
?
Cov.:
32
ClinVar
Significance: Pathogenic
Submissions summary: Pathogenic:8
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Wilson disease Pathogenic:8
Pathogenic, criteria provided, single submitter | clinical testing | Genome-Nilou Lab | Aug 10, 2021 | - - |
Pathogenic, criteria provided, single submitter | clinical testing | Invitae | Jun 17, 2023 | For these reasons, this variant has been classified as Pathogenic. ClinVar contains an entry for this variant (Variation ID: 553388). This premature translational stop signal has been observed in individual(s) with clinical features of Wilson disease (PMID: 21219664, 28212618, 30655162). This variant is not present in population databases (gnomAD no frequency). This sequence change creates a premature translational stop signal (p.Glu332*) in the ATP7B gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in ATP7B are known to be pathogenic (PMID: 10441329, 16283883). - |
Pathogenic, criteria provided, single submitter | clinical testing | Women's Health and Genetics/Laboratory Corporation of America, LabCorp | May 01, 2020 | Variant summary: ATP7B c.994G>T (p.Glu332X) results in a premature termination codon, predicted to cause a truncation of the encoded protein or absence of the protein due to nonsense mediated decay, which are commonly known mechanisms for disease. Truncations downstream of this position have been classified as pathogenic by our laboratory. The variant was absent in 249344 control chromosomes. c.994G>T has been reported in the literature in multiple individuals affected with Wilson Disease (examples: Li_2011, Dong_2016, Cheng_2017). These data indicate that the variant is very likely to be associated with disease. At least one publication reports experimental evidence that the variant results in mislocalization of the ATP7B protein in-vitro (Zhu_2013). Two other clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation. Both laboratories classified the variant as pathogenic. Based on the evidence outlined above, the variant was classified as pathogenic. - |
Pathogenic, criteria provided, single submitter | clinical testing | Counsyl | Aug 24, 2017 | - - |
Pathogenic, criteria provided, single submitter | clinical testing | 3billion | Sep 01, 2022 | The variant is not observed in the gnomAD v2.1.1 dataset. The stop-gained (nonsense) variant is predicted to result in a loss or disruption of normal protein function through nonsense-mediated decay (NMD) or protein truncation. Multiple pathogenic variants are reported downstream of the variant. The variant has been reported at least twice as pathogenic with clinical assertions and evidence for the classification (ClinVar ID: VCV000553388 / PMID: 21219664). Therefore, this variant is classified as Pathogenic according to the recommendation of ACMG/AMP guideline. - |
Pathogenic, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Aug 15, 2018 | The ATP7B c.994G>T (p.Glu332Ter) variant is a stop-gained variant predicted to result in the premature termination of the protein. The p.Glu332Ter variant has been reported in four studies in which it was found in a compound heterozygous state with a missense variant in two individuals diagnosed with Wilson disease (WND) (Geng et al. 2013; Yu et al. 2017) and in at least nine additional affected individuals whose genotype information was not provided and in whom the zygosity of the variant is unknown (Li et al. 2011; Dong et al. 2016). All of the individuals carrying the variant were of Chinese ethnicity. One of the individuals carrying the variant in a compound heterozygous state was diagnosed with the osseomuscular type of WND (Yu et al. 2017). The p.Glu332Ter variant was absent from 100 controls and is not found in the 1000 Genomes Project, Exome Sequencing Project, Exome Aggregation Consortium, or Genome Aggregation Database, in a region of good sequence coverage, so is presumed to be rare. Overexpression followed by immunofluoresence studies of myc-tagged variant protein in both CHO and SH-SY5Y cells, demonstrated that the variant resulted in a mislocalisation, showing a diffuse and homogenous distribution in the cytosol, compared to the wild type protein shown to be located in the Golgi apparatus (Zhu et al. 2013). Based on the collective evidence and potential impact of stop-gained variants, the p.Glu332Ter variant is classified as pathogenic for Wilson disease. This variant was observed by ICSL as part of a predisposition screen in an ostensibly healthy population. - |
Pathogenic, no assertion criteria provided | clinical testing | Natera, Inc. | May 12, 2021 | - - |
Pathogenic, criteria provided, single submitter | clinical testing | Baylor Genetics | Mar 11, 2024 | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
CADD
Pathogenic
DANN
Uncertain
Eigen
Uncertain
Eigen_PC
Benign
FATHMM_MKL
Benign
D
MutationTaster
Benign
A;A;A;A;A;A;D
Vest4
GERP RS
RBP_binding_hub_radar
RBP_regulation_power_radar
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at