rs55858252

Variant names:

Variant summary

Our verdict is Benign. Variant got -19 ACMG points: 1P and 20B. PP2BP4_StrongBP6_Very_StrongBS1BS2

The NM_000702.4(ATP1A2):c.25T>A(p.Tyr9Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00303 in 1,596,846 control chromosomes in the GnomAD database, including 10 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0021 ( 1 hom., cov: 33)

Exomes 𝑓: 0.0031 ( 9 hom. )

Consequence

ATP1A2
NM_000702.4 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:13

Conservation

PhyloP100: 1.67

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:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -19 ACMG points.

PP2

Missense variant in the ATP1A2 gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 63 curated pathogenic missense variants (we use a threshold of 10). The gene has 10 curated benign missense variants. Gene score misZ: 4.7713 (above the threshold of 3.09). Trascript score misZ: 6.824 (above the threshold of 3.09). GenCC associations: The gene is linked to fetal akinesia, respiratory insufficiency, microcephaly, polymicrogyria, and dysmorphic facies, alternating hemiplegia of childhood, hemiplegic migraine-developmental and epileptic encephalopathy spectrum, familial or sporadic hemiplegic migraine, alternating hemiplegia of childhood 1, developmental and epileptic encephalopathy 98, migraine, familial hemiplegic, 2.

BP4

Computational evidence support a benign effect (MetaRNN=0.012802213).

BP6

Variant 1-160120918-T-A is Benign according to our data. Variant chr1-160120918-T-A is described in ClinVar as [Likely_benign]. Clinvar id is 204881.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr1-160120918-T-A is described in Lovd as [Likely_benign].

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.0021 (319/152130) while in subpopulation NFE AF= 0.00381 (259/68004). AF 95% confidence interval is 0.00343. There are 1 homozygotes in gnomad4. There are 146 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

BS2

High AC in GnomAd4 at 319 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ATP1A2	NM_000702.4 link	c.25T>A	p.Tyr9Asn	missense_variant	Exon 2 of 23	ENST00000361216.8	NP_000693.1	P50993A0A0S2Z3W6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
ATP1A2	ENST00000361216.8 link	c.25T>A	p.Tyr9Asn	missense_variant	Exon 2 of 23	1	NM_000702.4	ENSP00000354490.3	P50993
ATP1A2	ENST00000392233.7 link	c.25T>A	p.Tyr9Asn	missense_variant	Exon 2 of 23	5		ENSP00000376066.3	B1AKY9
ATP1A2	ENST00000472488.5 link	n.128T>A		non_coding_transcript_exon_variant	Exon 2 of 20	2
ATP1A2	ENST00000478587.1 link	n.124T>A		non_coding_transcript_exon_variant	Exon 2 of 2	3

Frequencies

GnomAD3 genomes

AF:

0.00210

AC:

319

AN:

152012

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000652

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00138

Gnomad ASJ

AF:

0.000288

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000623

Gnomad FIN

AF:

0.0000947

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.00381

Gnomad OTH

AF:

0.00287

GnomAD3 exomes

AF:

0.00170

AC:

365

AN:

214772

Hom.:

AF XY:

0.00174

AC XY:

202

AN XY:

116084

show subpopulations

Gnomad AFR exome

AF:

0.000754

Gnomad AMR exome

AF:

0.000948

Gnomad ASJ exome

AF:

0.000106

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000724

Gnomad FIN exome

AF:

0.000214

Gnomad NFE exome

AF:

0.00314

Gnomad OTH exome

AF:

0.000922

GnomAD4 exome

AF:

0.00313

AC:

4523

AN:

1444716

Hom.:

Cov.:

AF XY:

0.00305

AC XY:

2191

AN XY:

717300

show subpopulations

Gnomad4 AFR exome

AF:

0.000485

Gnomad4 AMR exome

AF:

0.000839

Gnomad4 ASJ exome

AF:

0.0000387

Gnomad4 EAS exome

AF:

0.0000260

Gnomad4 SAS exome

AF:

0.000727

Gnomad4 FIN exome

AF:

0.000172

Gnomad4 NFE exome

AF:

0.00379

Gnomad4 OTH exome

AF:

0.00353

GnomAD4 genome

AF:

0.00210

AC:

319

AN:

152130

Hom.:

Cov.:

AF XY:

0.00196

AC XY:

146

AN XY:

74354

show subpopulations

Gnomad4 AFR

AF:

0.000651

Gnomad4 AMR

AF:

0.00137

Gnomad4 ASJ

AF:

0.000288

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000624

Gnomad4 FIN

AF:

0.0000947

Gnomad4 NFE

AF:

0.00381

Gnomad4 OTH

AF:

0.00284

Alfa

AF:

0.00308

Hom.:

Bravo

AF:

0.00226

ESP6500AA

AF:

0.00114

AC:

ESP6500EA

AF:

0.00268

AC:

ExAC

AF:

0.00136

AC:

165

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:13

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:4

Benign, criteria provided, single submitter	clinical testing	GeneDx	Dec 30, 2019	This variant is associated with the following publications: (PMID: 18957371, 27445835, 18513263, 23954377, 20981092, 17877748, 21533730, 27226003) -
Likely benign, criteria provided, single submitter	clinical testing	Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics	Nov 07, 2016	- -
Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Feb 01, 2025	ATP1A2: BS3:Supporting, BS2 -
Likely benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -

Migraine, familial hemiplegic, 2

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Apr 27, 2017	This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases allowed determination this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -
Benign, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	Dec 05, 2021	- -

Alternating hemiplegia of childhood 1

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Apr 27, 2017	This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases allowed determination this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -
Benign, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	Dec 05, 2021	- -

not specified

Benign:1

Benign, criteria provided, single submitter

clinical testing

Eurofins Ntd Llc (ga)

Dec 09, 2015

- -

Inborn genetic diseases

Benign:1

Benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 16, 2017

This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Fetal akinesia, respiratory insufficiency, microcephaly, polymicrogyria, and dysmorphic facies

Benign:1

Benign, criteria provided, single submitter

clinical testing

Genome-Nilou Lab

Dec 05, 2021

- -

Developmental and epileptic encephalopathy 98

Benign:1

Benign, criteria provided, single submitter

clinical testing

Genome-Nilou Lab

Dec 05, 2021

- -

Familial hemiplegic migraine

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 30, 2025

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.10

BayesDel_addAF

Benign

-0.24

BayesDel_noAF

Benign

-0.12

CADD

Uncertain

DANN

Benign

0.94

DEOGEN2

Benign

0.23

T;.

Eigen

Benign

-0.21

Eigen_PC

Benign

-0.028

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.90

D;D

M_CAP

Benign

0.084

MetaRNN

Benign

0.013

T;T

MetaSVM

Benign

-0.69

MutationAssessor

Benign

1.1

L;.

PrimateAI

Uncertain

0.74

PROVEAN

Benign

0.20

N;N

REVEL

Benign

0.28

Sift

Benign

0.34

T;T

Sift4G

Benign

0.24

T;T

Polyphen

0.0

B;.

Vest4

0.59

MVP

0.77

MPC

1.2

ClinPred

0.017

GERP RS

4.5

Varity_R

0.12

gMVP

0.79

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