NM_152296.5:c.666T>A

Variant names:

• chr19-41985364-A-T
• rs2217342
• NM_152296.5:c.666T>A

Variant summary

Our verdict is Benign. The variant received -17 ACMG points: 0P and 17B. BP4_Strong BP6_Very_Strong BP7 BS1

The NM_152296.5(ATP1A3):​c.666T>A​(p.Thr222Thr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000471 in 1,614,160 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Synonymous variant affecting the same amino acid position (i.e. T222T) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.000026 (0 hom., cov: 33)
  • Exomes 𝑓: 0.000049 (0 hom.)
• Consequence: ATP1A3 NM_152296.5 synonymous
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:3
• Conservation: PhyloP100: -4.07
• Publications: 38 publications found

Genes affected

ATP1A3 (HGNC:801): (ATPase Na+/K+ transporting subunit alpha 3) 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 3 subunit. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jan 2012]

ATP1A3 Gene-Disease associations (from GenCC):

• alternating hemiplegia of childhood 2

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, Genomics England PanelApp, G2P
• ATP1A3-associated neurological disorder

  Inheritance: AD Classification: DEFINITIVE Submitted by: Illumina, ClinGen
• cerebellar ataxia-areflexia-pes cavus-optic atrophy-sensorineural hearing loss syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, Orphanet, Genomics England PanelApp
• developmental and epileptic encephalopathy 99

  Inheritance: AD Classification: STRONG Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
• dystonia 12

  Inheritance: AD Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, Orphanet, Genomics England PanelApp
• encephalopathy, acute, infection-induced

  Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics
• alternating hemiplegia of childhood

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• complex neurodevelopmental disorder

  Inheritance: AR Classification: LIMITED Submitted by: Ambry Genetics

ENSG00000285505 (HGNC:):

ACMG classification

Our verdict: Benign. The variant received -17 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.97).
• BP6: Variant 19-41985364-A-T is Benign according to our data. Variant chr19-41985364-A-T is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 1167682.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=-4.07 with no splicing effect.
• BS1: Variant frequency is greater than expected in population sas. GnomAd4 allele frequency = 0.0000263 (4/152268) while in subpopulation SAS AF = 0.000414 (2/4830). AF 95% confidence interval is 0.0000729. There are 0 homozygotes in GnomAd4. There are 3 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_152296.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ATP1A3	NM_152296.5	MANE Select	c.666T>A	p.Thr222Thr	synonymous	Exon 7 of 23	NP_689509.1	P13637-1
	ATP1A3	NM_001256214.2		c.705T>A	p.Thr235Thr	synonymous	Exon 7 of 23	NP_001243143.1	P13637-3
	ATP1A3	NM_001256213.2		c.699T>A	p.Thr233Thr	synonymous	Exon 7 of 23	NP_001243142.1	P13637-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ATP1A3	ENST00000648268.1	MANE Select	c.666T>A	p.Thr222Thr	synonymous	Exon 7 of 23	ENSP00000498113.1	P13637-1
	ENSG00000285505	ENST00000644613.1		n.666T>A		non_coding_transcript_exon	Exon 7 of 25	ENSP00000494711.1	A0A2R8YEY8
	ATP1A3	ENST00000545399.6	TSL:2	c.705T>A	p.Thr235Thr	synonymous	Exon 7 of 23	ENSP00000444688.1	P13637-3

Frequencies

GnomAD3 genomes AF: 0.0000263 AC: 4 AN: 152150 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000655

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000414

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.000127 AC: 32 AN: 251436 AF XY: 0.000155

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000867

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000352

Gnomad OTH exome AF: 0.000163

GnomAD4 exome AF: 0.0000493 AC: 72 AN: 1461892 Hom.: 0 Cov.: 79 AF XY: 0.0000605 AC XY: 44 AN XY: 727246

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.0000671 AC: 3 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.000626 AC: 54 AN: 86256

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

Middle Eastern (MID) AF: 0.000347 AC: 2 AN: 5768

European-Non Finnish (NFE) AF: 0.00000899 AC: 10 AN: 1112012

Other (OTH) AF: 0.0000497 AC: 3 AN: 60396

GnomAD4 genome AF: 0.0000263 AC: 4 AN: 152268 Hom.: 0 Cov.: 33 AF XY: 0.0000403 AC XY: 3 AN XY: 74446

African (AFR) AF: 0.00 AC: 0 AN: 41550

American (AMR) AF: 0.0000654 AC: 1 AN: 15294

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5172

South Asian (SAS) AF: 0.000414 AC: 2 AN: 4830

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10618

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68014

Other (OTH) AF: 0.00 AC: 0 AN: 2112

Alfa AF: 0.00000395 Hom.: 103293

EpiCase AF: 0.00

EpiControl AF: 0.0000593

ClinVar

ClinVar submissions

Significance: Benign/Likely benign

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	-	1	ATP1A3-related disorder (1)
-	-	1	Dystonia 12 (1)
-	-	1	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.97
CADD	Benign	0.012
DANN	Benign	0.36
PhyloP100		-4.1
Mutation Taster		=99/1	polymorphism

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

Other links and lift over

dbSNP: rs2217342; hg19: chr19-42489516;