dbSNP rs786204578: ATP7B:p.Gln1351* (chr13-51935666-G-A) – ACMG Classification: Pathogenic (14 pts)

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]

ATP7B links:

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 14 ACMG points.

PVS1

Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most 50 bp of the penultimate exon, not predicted to undergo nonsense mediated mRNA decay. There are 15 pathogenic variants in the truncated region.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 13-51935666-G-A is Pathogenic according to our data. Variant chr13-51935666-G-A is described in ClinVar as [Pathogenic]. Clinvar id is 188947.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr13-51935666-G-A is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ATP7B	NM_000053.4 link	c.4051C>T	p.Gln1351*	stop_gained	Exon 20 of 21	ENST00000242839.10	NP_000044.2	P35670-1B7ZLR4A0A024RDX3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ATP7B	ENST00000242839.10 link	c.4051C>T	p.Gln1351*	stop_gained	Exon 20 of 21	1	NM_000053.4	ENSP00000242839.5		P35670-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000408

AC:

AN:

245256

Hom.:

AF XY:

0.00000750

AC XY:

AN XY:

133400

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000903

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000548

AC:

AN:

1461130

Hom.:

Cov.:

AF XY:

0.00000688

AC XY:

AN XY:

726770

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000720

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000709

Hom.:

Bravo

AF:

0.00000756

EpiCase

AF:

0.000218

EpiControl

AF:

0.00

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:15

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Wilson disease

Pathogenic:11

Jul 29, 2024

All of Us Research Program, National Institutes of Health

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant changes 1 nucleotide in exon 20 of the ATP7B gene, creating a premature translation stop signal. This variant is expected to result in an absent or non-functional protein product. This variant has been observed in many individuals affected with autosomal recessive Wilson disease (PMID: 11180609, 16283883, 17154398, 17272994, 21273697, 21334398, 21610751, 22677543, 23885147, 24517292, 26799313, 30230192, 34400371, 35626790), including one homozygous individual (PMID: 17272994), four individuals who were confirmed to carry another pathogenic variant in trans (PMID: 17272994, 21610751, 26799313), and multiple individuals who carried another pathogenic variant in unknown phase (PMID: 17154398, 23885147, 24517292, 35626790). This variant has been identified in 1/245256 chromosomes in the general population by the Genome Aggregation Database (gnomAD). Loss of ATP7B function is a known mechanism of disease (clinicalgenome.org). Based on the available evidence, this variant is classified as Pathogenic. -

Sep 09, 2016

Counsyl

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

May 09, 2022

Fulgent Genetics, Fulgent Genetics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Aug 10, 2021

Genome-Nilou Lab

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Sep 16, 2020

Natera, Inc.

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Nov 02, 2023

Zotz-Klimas Genetics Lab, MVZ Zotz Klimas

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Jun 11, 2020

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.Gln1351X variant in ATP7B has been reported in >10 individuals with Wilson disease, including at least 4 compound heterozygous and 1 homozygous individual (Beyersdorff 2006, Ferenci 2007, Folhoffer 2007, Genschel 2001, Gromadzka 2005, Moller 2011, Petrasek 2007, Xiong 2015). This variant has been identified in 0.0009% (1/110774) of European chromosomes by gnomAD (http://gnomad.broadinstitute.org). This nonsense variant leads to a premature termination codon at position 1351, which is predicted to lead to a truncated or absent protein. Loss of function of the ATP7B gene is an established disease mechanism in autosomal recessive Wilson disease. In summary, this variant meets criteria to be classified as pathogenic for autosomal recessive Wilson disease. ACMG/AMP criteria applied: PVS1, PM3_VeryStrong, PM2, PP4. -

Dec 09, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change creates a premature translational stop signal (p.Gln1351*) 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). This variant is present in population databases (rs786204578, gnomAD 0.0009%). This premature translational stop signal has been observed in individual(s) with Wilson disease (PMID: 11180609, 16283883, 26799313). ClinVar contains an entry for this variant (Variation ID: 188947). For these reasons, this variant has been classified as Pathogenic. -

Feb 27, 2024

Baylor Genetics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Oct 06, 2017

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: The ATP7B c.4051C>T (p.Gln1351X) variant results in a premature termination codon, predicted to cause a truncated or absent ATP7B protein due to nonsense mediated decay, which are commonly known mechanisms for disease. This variant was found in 1/242182 control chromosomes at a frequency of 0.0000041, which does not exceed the estimated maximal expected allele frequency of a pathogenic ATP7B variant (0.0054006). Multiple publications cite the variant in compound heterozygote and homozygote affected individuals. A clinical diagnostic laboratory classified this variant as likely pathogenic. Taken together, this variant is classified as pathogenic. -

Sep 09, 2024

Color Diagnostics, LLC DBA Color Health

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

not provided

Pathogenic:4

Dec 01, 2017

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The ATP7B c.4051C>T, p.Gln1351Ter variant (rs786204578) has been reported in multiple individuals with Wilson's disease (Folhoffer 2007, Genschel 2000, Gromadzka 2005, Moller 2011, Vrabelova 2005). It is listed in ClinVar (Variation ID: 188947), and observed once in the Genome Aggregation Database general population database (1/242182 alleles). The variant introduces a premature termination codon, and is predicted to result in a truncated protein or an absent transcript. Based on the above information, the variant is classified as pathogenic. References: Folhoffer A et al. Novel mutations of the ATP7B gene among 109 Hungarian patients with Wilson's disease. Eur J Gastroenterol Hepatol. 2007; 19(2):105-11. Genschel J et al. Three novel mutations (P760L, L1305P, Q1351Stop) causing Wilson disease. Hum Mutat. 2001; 17(2):156. Gromadzka G et al. Frameshift and nonsense mutations in the gene for ATPase7B are associated with severe impairment of copper metabolism and with an early clinical manifestation of Wilson's disease. Clin Genet. 2005; 68(6):524-32. Moller L et al. Clinical presentation and mutations in Danish patients with Wilson disease. Eur J Hum Genet. 2011; 19(9):935-41. Vrabelova S et al. Mutation analysis of the ATP7B gene and genotype/phenotype correlation in 227 patients with Wilson disease. Mol Genet Metab. 2005; 86(1-2):277-85. -

Jun 14, 2023

Mayo Clinic Laboratories, Mayo Clinic

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

PP4, PM2, PM3, PS4_moderate, PVS1_strong -

Jun 11, 2024

GeneDx

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Nonsense variant predicted to result in protein truncation or nonsense mediated decay in a gene for which loss of function is a known mechanism of disease; Not observed at significant frequency in large population cohorts (gnomAD); This variant is associated with the following publications: (PMID: 25525159, 32270360, 11180609, 34400371, 17433323, 16635921, 16283883, 17154398, 34125323, 26819605, 35626790, 34764798, 18371106, 23885147, 26799313, 21610751, 17272994, 30230192) -

Oct 04, 2016

Eurofins Ntd Llc (ga)

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.63

BayesDel_noAF

Pathogenic

0.59

CADD

Pathogenic

DANN

Uncertain

1.0

Eigen

Pathogenic

1.2

Eigen_PC

Pathogenic

1.0

FATHMM_MKL

Pathogenic

0.97

Vest4

0.95

GERP RS

5.2

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

rs786204578

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

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