NM_000052.7:c.844A>G

Variant names:

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 0P and 7B. BP4_ModerateBP6BS2

The NM_000052.7(ATP7A):c.844A>G(p.Ile282Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000479 in 1,210,331 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 16 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I282L) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000027 ( 0 hom., 0 hem., cov: 22)

Exomes 𝑓: 0.000050 ( 0 hom. 16 hem. )

Consequence

ATP7A
NM_000052.7 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:3

Conservation

PhyloP100: 0.364

Publications

1 publications found

Variant links:

Genes affected

ATP7A (HGNC:869): (ATPase copper transporting alpha) This gene encodes a transmembrane protein that functions in copper transport across membranes. This protein is localized to the trans Golgi network, where it is predicted to supply copper to copper-dependent enzymes in the secretory pathway. It relocalizes to the plasma membrane under conditions of elevated extracellular copper, and functions in the efflux of copper from cells. Mutations in this gene are associated with Menkes disease, X-linked distal spinal muscular atrophy, and occipital horn syndrome. Alternatively-spliced transcript variants have been observed. [provided by RefSeq, Aug 2013]

ATP7A links:

PGK1 (HGNC:8896): (phosphoglycerate kinase 1) The protein encoded by this gene is a glycolytic enzyme that catalyzes the conversion of 1,3-diphosphoglycerate to 3-phosphoglycerate. The encoded protein may also act as a cofactor for polymerase alpha. Additionally, this protein is secreted by tumor cells where it participates in angiogenesis by functioning to reduce disulfide bonds in the serine protease, plasmin, which consequently leads to the release of the tumor blood vessel inhibitor angiostatin. The encoded protein has been identified as a moonlighting protein based on its ability to perform mechanistically distinct functions. Deficiency of the enzyme is associated with a wide range of clinical phenotypes hemolytic anemia and neurological impairment. Pseudogenes of this gene have been defined on chromosomes 19, 21 and the X chromosome. [provided by RefSeq, Jan 2014]

PGK1 Gene-Disease associations (from GenCC):

glycogen storage disease due to phosphoglycerate kinase 1 deficiency
Inheritance: XL Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, G2P, Genomics England PanelApp

PGK1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -7 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.076922774).

BP6

Variant X-77989466-A-G is Benign according to our data. Variant chrX-77989466-A-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 579959.

BS2

High AC in GnomAdExome4 at 55 XL,AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000052.7. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
ATP7A	NM_000052.7	MANE Select	c.844A>G	p.Ile282Val	missense	Exon 4 of 23	NP_000043.4
ATP7A	NM_001282224.2		c.844A>G	p.Ile282Val	missense	Exon 4 of 22	NP_001269153.1
ATP7A	NR_104109.2		n.284+17705A>G		intron	N/A

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
ATP7A	ENST00000341514.11	TSL:1 MANE Select	c.844A>G	p.Ile282Val	missense	Exon 4 of 23	ENSP00000345728.6
ATP7A	ENST00000689767.1		c.844A>G	p.Ile282Val	missense	Exon 5 of 25	ENSP00000509406.1
ATP7A	ENST00000343533.10	TSL:5	c.874A>G	p.Ile292Val	missense	Exon 5 of 24	ENSP00000343026.6

Frequencies

GnomAD3 genomes

AF:

0.0000267

AC:

AN:

112224

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000564

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000219

AC:

AN:

183020

AF XY:

0.00

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000491

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000501

AC:

AN:

1098107

Hom.:

Cov.:

AF XY:

0.0000440

AC XY:

AN XY:

363517

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

26396

American (AMR)

AF:

0.00

AC:

AN:

35206

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

19382

East Asian (EAS)

AF:

0.00

AC:

AN:

30199

South Asian (SAS)

AF:

0.00

AC:

AN:

54140

European-Finnish (FIN)

AF:

0.00

AC:

AN:

40529

Middle Eastern (MID)

AF:

0.000967

AC:

AN:

4137

European-Non Finnish (NFE)

AF:

0.0000594

AC:

AN:

842025

Other (OTH)

AF:

0.0000217

AC:

AN:

46093

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.492

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000267

AC:

AN:

112224

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

34382

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

30931

American (AMR)

AF:

0.00

AC:

AN:

10545

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

2656

East Asian (EAS)

AF:

0.00

AC:

AN:

3593

South Asian (SAS)

AF:

0.00

AC:

AN:

2721

European-Finnish (FIN)

AF:

0.00

AC:

AN:

6116

Middle Eastern (MID)

AF:

0.00

AC:

AN:

237

European-Non Finnish (NFE)

AF:

0.0000564

AC:

AN:

53219

Other (OTH)

AF:

0.00

AC:

AN:

1521

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.575

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.0000189

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:2

Aug 05, 2020

Mayo Clinic Laboratories, Mayo Clinic

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Aug 21, 2019

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Nov 01, 2023

CeGaT Center for Human Genetics Tuebingen

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

ATP7A: BP4

Inborn genetic diseases

Uncertain:1

Aug 29, 2023

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.844A>G (p.I282V) alteration is located in exon 4 (coding exon 3) of the ATP7A gene. This alteration results from a A to G substitution at nucleotide position 844, causing the isoleucine (I) at amino acid position 282 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear.

Menkes kinky-hair syndrome;C0268353:Cutis laxa, X-linked;C1845359:X-linked distal spinal muscular atrophy type 3

Benign:1

Jan 23, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.062

BayesDel_addAF

Benign

-0.38

BayesDel_noAF

Benign

-0.64

CADD

Benign

8.0

(source)

DANN

Benign

0.65

DEOGEN2

Benign

0.38

FATHMM_MKL

Benign

0.49

LIST_S2

Benign

0.84

M_CAP

Benign

0.026

MetaRNN

Benign

0.077

MetaSVM

Benign

-0.84

MutationAssessor

Benign

0.23

PhyloP100

0.36

PrimateAI

Benign

0.31

PROVEAN

Benign

0.25

REVEL

Benign

0.13

Sift

Benign

0.30

Sift4G

Benign

0.29

Polyphen

0.0

Vest4

0.15

MutPred

0.28

Gain of catalytic residue at I282 (P = 0.0244)

MVP

0.59

MPC

0.19

ClinPred

0.033

GERP RS

-1.8

Varity_R

0.044

gMVP

0.46

Mutation Taster

=86/14

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over