rs776280797

Positions:

chr13-51939104-C-T

Variant summary

Our verdict is Pathogenic. Variant got 14 ACMG points: 14P and 0B. PM2PP3_StrongPP5_Very_Strong

The NM_000053.4(ATP7B):c.3646G>A(p.Val1216Met) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000316 in 1,614,126 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★).

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000030 ( 0 hom. )

Consequence

ATP7B
NM_000053.4 missense

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:10

Conservation

PhyloP100: 7.86

Variant links:

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:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 14 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.976

PP5

Variant 13-51939104-C-T is Pathogenic according to our data. Variant chr13-51939104-C-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 188859.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ATP7B	NM_000053.4 linkuse as main transcript	c.3646G>A	p.Val1216Met	missense_variant	17/21	ENST00000242839.10	NP_000044.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ATP7B	ENST00000242839.10 linkuse as main transcript	c.3646G>A	p.Val1216Met	missense_variant	17/21	1	NM_000053.4	ENSP00000242839	P1	P35670-1

Frequencies

GnomAD3 genomes

AF:

0.0000460

AC:

AN:

152236

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000192

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.000470

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000841

AC:

AN:

249592

Hom.:

AF XY:

0.0000739

AC XY:

AN XY:

135408

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000111

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.000742

Gnomad NFE exome

AF:

0.00000883

Gnomad OTH exome

AF:

0.000165

GnomAD4 exome

AF:

0.0000301

AC:

AN:

1461890

Hom.:

Cov.:

AF XY:

0.0000316

AC XY:

AN XY:

727246

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000756

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.000562

Gnomad4 NFE exome

AF:

0.00000450

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.0000460

AC:

AN:

152236

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74368

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000192

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.000470

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000113

ExAC

AF:

0.0000412

AC:

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:10

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Wilson disease

Pathogenic:8

Likely pathogenic, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	Aug 10, 2021	- -
Pathogenic, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Nov 14, 2023	This sequence change replaces valine, which is neutral and non-polar, with methionine, which is neutral and non-polar, at codon 1216 of the ATP7B protein (p.Val1216Met). This variant is present in population databases (rs776280797, gnomAD 0.07%). This missense change has been observed in individual(s) with Wilson disease (PMID: 10447265, 14966923, 15952988, 26253413). It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 188859). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt ATP7B protein function with a positive predictive value of 80%. For these reasons, this variant has been classified as Pathogenic. -
Likely pathogenic, criteria provided, single submitter	literature only	Counsyl	Jul 02, 2014	- -
Likely pathogenic, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Jun 13, 2019	The ATP7B c.3646G>A; p.Val1216Met variant (rs776280797) is reported in the literature in multiple individuals affected with Wilson disease (Haas 1999, Liu 2004, Loudianos 1998, Mak 2008, Margarit 2005, Qian 2019). Multiple affected individuals with this variant were also found to carry an additional pathogenic variant (Liu 2004, Margarit 2005, Qian 2019). The p.Val1216Met variant is found in the general population with the low overall allele frequency of 0.01% (24/280998 alleles) in the Genome Aggregation Database, and it is reported as likely pathogenic by multiple laboratories in ClinVar (Variation ID: 188859). The valine at codon 1216 is highly conserved, occurs in the functionally important ATP-binding loop (Loudianos 1998, Mak 2008), and computational analyses (SIFT, PolyPhen-2) predict that this variant is deleterious. Based on available information, this variant is considered to be likely pathogenic. References: Haas R et al. Mutation analysis in patients with Wilson disease: identification of 4 novel mutations. Mutation in brief no. 250. Online. Hum Mutat. 1999;14(1):88. Liu XQ et al. Correlation of ATP7B genotype with phenotype in Chinese patients with Wilson disease. World J Gastroenterol. 2004 Feb 15;10(4):590-3. Loudianos G et al. Further delineation of the molecular pathology of Wilson disease in the Mediterranean population. Hum Mutat. 1998;12(2):89-94. Mak CM et al. Mutational analysis of 65 Wilson disease patients in Hong Kong Chinese: identification of 17 novel mutations and its genetic heterogeneity. J Hum Genet. 2008;53(1):55-63. Margarit E et al. Mutation analysis of Wilson disease in the Spanish population -- identification of a prevalent substitution and eight novel mutations in the ATP7B gene. Clin Genet. 2005 Jul;68(1):61-8. Qian Z et al. Novel mutations found in the ATP7B gene in Chinese patients with Wilson's disease. Mol Genet Genomic Med. 2019 May;7(5):e649. -
Pathogenic, criteria provided, single submitter	clinical testing	All of Us Research Program, National Institutes of Health	Jan 11, 2024	Well-established functional studies suggest that this variant results in a deleterious effect to the protein that is sufficient to be disease-causing (PMID: 29637721, 30133932, 24253677). This variant has been reported in multiple individuals with Wilson disease and is one of the five most common pathogenic variants in the Chinese population (PMID: 35220961, 30884209, 26253413, 32618023, 26782526, 34324271, 31708252, 17876883, 34470610). This variant is located in a well-established functional domain of the protein where other pathogenic or likely pathogenic variants have been described (PMID: 35296237, 14966923). This gene has fewer missense variants in the general population than expected, which suggests that this gene is intolerant to missense variation. -
Pathogenic, criteria provided, single submitter	clinical testing	Baylor Genetics	Feb 01, 2024	- -
Likely pathogenic, criteria provided, single submitter	clinical testing	Fulgent Genetics, Fulgent Genetics	Oct 31, 2018	- -
Pathogenic, criteria provided, single submitter	clinical testing	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	Nov 17, 2022	Variant summary: ATP7B c.3646G>A (p.Val1216Met) results in a conservative amino acid change located in the ATP-binding domain (Yuan_2015, Dong_2016) of the encoded protein sequence. Four of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 8.4e-05 in 249592 control chromosomes (gnomAD). This frequency is not significantly higher than expected for a pathogenic variant in ATP7B causing Wilson Disease (8.4e-05 vs 0.0054), allowing no conclusion about variant significance. c.3646G>A has been reported in the literature as a biallelic genotype and as an uninformative genotype (second allele not reported/specified) in multiple individuals affected with Wilson Disease (e.g. Loudianos_1998, Haas_1999, Lee_2000, Margarit_2005, Park_2007, Yuan_2015, Balashova_2020) . These data indicate that the variant is very likely to be associated with disease. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Five submitters have provided clinical-significance assessments for this variant to ClinVar after 2014. All laboratories classified the variant as either pathogenic (n=1) or likely pathogenic (n=4). Based on the evidence outlined above, the variant was classified as pathogenic. -

not provided

Pathogenic:2

Likely pathogenic, criteria provided, single submitter	clinical testing	GeneDx	Mar 23, 2023	In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 18034201, 21219664, 31589614, 29637721, 18371106, 22692182, 30655162, 27022412, 34240825, 21645214, 17876883, 17587212, 20931554, 11043508, 8298641, 35220961, 26782526, 32618023, 9671269, 31708252, 30275481, 34324271, 35470480, 10447265, 14966923, 31172689, 26253413, 22677543, 30884209, 34620762, 27982432, 15952988) -
Likely pathogenic, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Aug 28, 2015	- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.44

BayesDel_addAF

Pathogenic

0.40

BayesDel_noAF

Pathogenic

0.57

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.96

D;D;.;.;.;.;.

Eigen

Pathogenic

0.83

Eigen_PC

Pathogenic

0.77

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Pathogenic

0.99

D;D;D;D;D;D;D

M_CAP

Pathogenic

0.80

MetaRNN

Pathogenic

0.98

D;D;D;D;D;D;D

MetaSVM

Pathogenic

1.1

MutationAssessor

Uncertain

2.8

M;.;.;.;.;.;.

MutationTaster

Benign

1.0

D;D;D;D;D;D;D

PrimateAI

Uncertain

0.72

PROVEAN

Uncertain

-2.6

D;D;D;D;D;.;D

REVEL

Pathogenic

0.95

Sift

Uncertain

0.0010

D;D;D;D;D;.;D

Sift4G

Uncertain

0.0020

D;D;D;D;D;D;D

Polyphen

1.0

D;D;D;D;D;D;D

Vest4

0.94

MutPred

0.89

Gain of sheet (P = 0.0827);.;.;.;.;.;.;

MVP

0.96

MPC

0.38

ClinPred

0.54

GERP RS

5.2

Varity_R

0.83

gMVP

0.87

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over