rs587783309

Variant names:

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM1PM2PP3_ModeratePP5

The NM_000053.4(ATP7B):c.3188C>T(p.Ala1063Val) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000434 in 1,613,984 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 Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

ATP7B
NM_000053.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:8U:1B:1

Conservation

PhyloP100: 9.94

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 Likely_pathogenic. Variant got 7 ACMG points.

PM1

In a helix (size 11) in uniprot entity ATP7B_HUMAN there are 5 pathogenic changes around while only 0 benign (100%) in NM_000053.4

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.932

PP5

Variant 13-51944164-G-A is Pathogenic according to our data. Variant chr13-51944164-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 157945.We mark this variant Likely_pathogenic, oryginal submissions are: {Likely_pathogenic=3, Benign=1, Uncertain_significance=1, Pathogenic=5}. Variant chr13-51944164-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.3188C>T	p.Ala1063Val	missense_variant	Exon 14 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.3188C>T	p.Ala1063Val	missense_variant	Exon 14 of 21	1	NM_000053.4	ENSP00000242839.5		P35670-1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152126

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000410

AC:

AN:

1461858

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727222

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000504

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

8.99e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152126

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74298

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:8Uncertain:1Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Wilson disease

Pathogenic:7Uncertain:1

Aug 27, 2023

Baylor Genetics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Sep 08, 2017

Counsyl

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Dec 18, 2024

Genomic Medicine Center of Excellence, King Faisal Specialist Hospital and Research Centre

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jul 17, 2023

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

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: ATP7B c.3188C>T (p.Ala1063Val) results in a non-conservative amino acid change located in the P-type ATPase, haloacid dehalogenase domain (IPR044492) of the encoded protein sequence. Five of five in-silico tools predict a damaging effect of the variant on protein function. The variant was absent in 249356 control chromosomes. c.3188C>T has been reported in the literature in multiple individuals affected with Wilson Disease (Loudianos_1999, Weiss_2010, AbdelGhaffar_2011). 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. The following publications have been ascertained in the context of this evaluation (PMID: 21682854, 10544227, 20517649). Four submitters have cited clinical-significance assessments for this variant to ClinVar after 2014 and classified as pathogenic/likely pathogenic (n=2) and VUS (n=2). Based on the evidence outlined above, the variant was classified as pathogenic. -

Juno Genomics, Hangzhou Juno Genomics, Inc

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

PM2_Supporting+PP3+PM3_VeryStrong -

Aug 10, 2021

Genome-Nilou Lab

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Sep 05, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces alanine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 1063 of the ATP7B protein (p.Ala1063Val). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with Wilson disease (PMID: 10544227, 20517649, 23518715). ClinVar contains an entry for this variant (Variation ID: 157945). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) 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. -

Jun 11, 2020

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.Ala1063Val variant in ATP7B has been reported in several individuals with Wilson disease, including at least 2 homozygotes and 3 compound heterozygous individuals (Abdelghaffar 2008, Bost 2012, Cheng 2017, Coffey 2013, Gojova 2008, Loudianos 1999, Merle 2010, Nagasaka 2012, Nanji 1997, Nemeth 2016, Todorov 2016, Vrabelova 2005, Zong 2015). This variant is absent from large population studies. Computational prediction tools and conservation analyses suggest an impact to the protein. In summary, although additional studies are required to fully establish its clinical significance, this variant meets criteria to be classified as likely pathogenic for autosomal recessive Wilson disease. ACMG/AMP criteria applied: PM3_Strong, PM2, PP3, PP4. -

not provided

Pathogenic:1

Oct 19, 2020

Mayo Clinic Laboratories, Mayo Clinic

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

PP3, PP4, PM2_moderate, PM3_strong, PS4_moderate -

not specified

Benign:1

Feb 08, 2013

Genetic Services Laboratory, University of Chicago

Significance: Benign

Review Status: flagged submission

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.64

BayesDel_addAF

Pathogenic

0.44

BayesDel_noAF

Pathogenic

0.40

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.92

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

Eigen

Pathogenic

0.70

Eigen_PC

Pathogenic

0.74

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

0.99

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

M_CAP

Pathogenic

0.76

MetaRNN

Pathogenic

0.93

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

MetaSVM

Pathogenic

0.98

MutationAssessor

Benign

1.0

L;.;.;.;.;.;.

PrimateAI

Uncertain

0.70

PROVEAN

Uncertain

-3.8

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

REVEL

Pathogenic

0.84

Sift

Uncertain

0.0010

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

Sift4G

Uncertain

0.031

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

Polyphen

1.0

D;D;D;P;D;D;D

Vest4

0.86

MutPred

0.51

Loss of disorder (P = 0.0836);.;.;.;.;.;.;

MVP

0.99

MPC

0.38

ClinPred

0.83

GERP RS

5.4

RBP_binding_hub_radar

0.92

RBP_regulation_power_radar

2.7

Varity_R

0.82

gMVP

0.74

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