rs758749177

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 1P and 6B. PP2BP4_ModerateBS2

The NM_000702.4(ATP1A2):c.2374A>G(p.Ile792Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000341 in 1,613,628 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000033 ( 0 hom. )

Consequence

ATP1A2
NM_000702.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 3.49

Variant links:

Genes affected

ATP1A2 (HGNC:800): (ATPase Na+/K+ transporting subunit alpha 2) The protein encoded by this gene belongs to the family of P-type cation transport ATPases, and to the subfamily of Na+/K+ -ATPases. Na+/K+ -ATPase is an integral membrane protein responsible for establishing and maintaining the electrochemical gradients of Na and K ions across the plasma membrane. These gradients are essential for osmoregulation, for sodium-coupled transport of a variety of organic and inorganic molecules, and for electrical excitability of nerve and muscle. This enzyme is composed of two subunits, a large catalytic subunit (alpha) and a smaller glycoprotein subunit (beta). The catalytic subunit of Na+/K+ -ATPase is encoded by multiple genes. This gene encodes an alpha 2 subunit. Mutations in this gene result in familial basilar or hemiplegic migraines, and in a rare syndrome known as alternating hemiplegia of childhood. [provided by RefSeq, Oct 2008]

ATP1A2 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

PP2

Missense variant where missense usually causes diseases, ATP1A2

BP4

Computational evidence support a benign effect (MetaRNN=0.18354213).

BS2

High AC in GnomAd at 7 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ATP1A2	NM_000702.4 linkuse as main transcript	c.2374A>G	p.Ile792Val	missense_variant	17/23	ENST00000361216.8
ATP1A2	XM_047421286.1 linkuse as main transcript	c.1483A>G	p.Ile495Val	missense_variant	10/16

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
ATP1A2	ENST00000361216.8 linkuse as main transcript	c.2374A>G	p.Ile792Val	missense_variant	17/23	1	NM_000702.4	P1
ATP1A2	ENST00000392233.7 linkuse as main transcript	c.2374A>G	p.Ile792Val	missense_variant	17/23	5
ATP1A2	ENST00000447527.1 linkuse as main transcript	c.1507A>G	p.Ile503Val	missense_variant	10/16	2
ATP1A2	ENST00000472488.5 linkuse as main transcript	n.2477A>G		non_coding_transcript_exon_variant	17/20	2

Frequencies

GnomAD3 genomes

AF:

0.0000461

AC:

AN:

151738

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000969

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:

0.0000442

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000199

AC:

AN:

251468

Hom.:

AF XY:

0.0000221

AC XY:

AN XY:

135906

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:

0.0000440

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000328

AC:

AN:

1461890

Hom.:

Cov.:

AF XY:

0.0000303

AC XY:

AN XY:

727248

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:

0.0000414

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000461

AC:

AN:

151738

Hom.:

Cov.:

AF XY:

0.0000540

AC XY:

AN XY:

74076

show subpopulations

Gnomad4 AFR

AF:

0.0000969

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:

0.0000442

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000772

Hom.:

Bravo

AF:

0.0000340

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Sep 04, 2018

p.Ile792Val (ATT>GTT): c.2374 A>G in exon 17 of the ATP1A2 gene (NM_000702.3). The I792V missense change has not been published as a mutation, nor has it been reported as a benign polymorphism to our knowledge. It was not observed in approximately 6,500 individuals of European and African American ancestry in the NHLBI Exome Sequencing Project, indicating it is not a common benign variant in these populations. The I792V variant alters a conserved position in the ATP1A2 protein. However, the amino acid substitution is conservative, which is not likely to impact secondary protein structure as these residues share similar properties. In silico analysis predicts this variant likely does not alter the protein structure/function. Therefore, based on the currently available information, it is unclear whether I792V is a disease-causing mutation or a rare benign variant. The variant is found in ADULT-EPI,EPILEPSY panel(s). -

Familial hemiplegic migraine

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Aug 23, 2023

This sequence change replaces isoleucine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 792 of the ATP1A2 protein (p.Ile792Val). This variant is present in population databases (rs758749177, gnomAD 0.004%). This variant has not been reported in the literature in individuals affected with ATP1A2-related conditions. ClinVar contains an entry for this variant (Variation ID: 204897). 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 not expected to disrupt ATP1A2 protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.072

BayesDel_addAF

Benign

-0.051

BayesDel_noAF

Benign

-0.20

Cadd

Uncertain

Dann

Uncertain

0.99

DEOGEN2

Benign

0.21

T;.

Eigen

Benign

-0.21

Eigen_PC

Benign

-0.036

FATHMM_MKL

Uncertain

0.90

LIST_S2

Uncertain

0.86

D;D

M_CAP

Benign

0.036

MetaRNN

Benign

0.18

T;T

MetaSVM

Benign

-0.48

MutationAssessor

Benign

0.015

N;.

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.63

PROVEAN

Benign

-0.40

N;N

REVEL

Benign

0.23

Sift

Benign

0.17

T;T

Sift4G

Benign

0.41

T;T

Polyphen

0.0

B;.

Vest4

0.17

MVP

0.70

MPC

1.1

ClinPred

0.30

GERP RS

4.6

Varity_R

0.12

gMVP

0.62

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