chr19-41966639-G-A

Variant names:

• chr19-41966639-G-A
• rs781980860
• NM_152296.5:c.*298C>T

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP4 BS1_Supporting BS2

The NM_152296.5(ATP1A3):​c.*298C>T variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000601 in 1,497,402 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

• Frequency:
  • Genomes: 𝑓 0.000053 (0 hom., cov: 31)
  • Exomes 𝑓: 0.000061 (2 hom.)
• Consequence: ATP1A3 NM_152296.5 3_prime_UTR
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:3
• Conservation: PhyloP100: -2.13
• Publications: 1 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: Likely_benign. The variant received -6 ACMG points.

• BP4: Computational evidence support a benign effect (REVEL=0.26).
• BS1: Variant frequency is greater than expected in population mid. GnomAdExome4 allele frequency = 0.000061 (82/1345132) while in subpopulation MID AF = 0.00623 (34/5456). AF 95% confidence interval is 0.00458. There are 2 homozygotes in GnomAdExome4. There are 38 alleles in the male GnomAdExome4 subpopulation. Median coverage is 32. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting
• BS2: High Homozygotes in GnomAdExome4 at 2 AD,AR gene

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.*298C>T		3_prime_UTR	Exon 23 of 23	NP_689509.1	P13637-1
	ATP1A3	NM_001256214.2		c.*298C>T		3_prime_UTR	Exon 23 of 23	NP_001243143.1	P13637-3
	ATP1A3	NM_001256213.2		c.*298C>T		3_prime_UTR	Exon 23 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.*298C>T		3_prime_UTR	Exon 23 of 23	ENSP00000498113.1	P13637-1
	ENSG00000285505	ENST00000644613.1		n.3013+610C>T		intron	N/A	ENSP00000494711.1	A0A2R8YEY8
	ATP1A3	ENST00000545399.6	TSL:2	c.*298C>T		3_prime_UTR	Exon 23 of 23	ENSP00000444688.1	P13637-3

Frequencies

GnomAD3 genomes AF: 0.0000526 AC: 8 AN: 152152 Hom.: 0 Cov.: 31

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000656

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.0158

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.000478

GnomAD2 exomes AF: 0.0000263 AC: 4 AN: 152358 AF XY: 0.0000122

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000907

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000520

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000610 AC: 82 AN: 1345132 Hom.: 2 Cov.: 32 AF XY: 0.0000574 AC XY: 38 AN XY: 662092

African (AFR) AF: 0.0000657 AC: 2 AN: 30424

American (AMR) AF: 0.00 AC: 0 AN: 33838

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 23702

East Asian (EAS) AF: 0.00 AC: 0 AN: 31196

South Asian (SAS) AF: 0.0000385 AC: 3 AN: 77874

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 42696

Middle Eastern (MID) AF: 0.00623 AC: 34 AN: 5456

European-Non Finnish (NFE) AF: 0.0000383 AC: 40 AN: 1045058

Other (OTH) AF: 0.0000547 AC: 3 AN: 54888

GnomAD4 genome AF: 0.0000525 AC: 8 AN: 152270 Hom.: 0 Cov.: 31 AF XY: 0.0000403 AC XY: 3 AN XY: 74454

African (AFR) AF: 0.0000241 AC: 1 AN: 41550

American (AMR) AF: 0.0000655 AC: 1 AN: 15270

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5190

South Asian (SAS) AF: 0.00 AC: 0 AN: 4828

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10612

Middle Eastern (MID) AF: 0.0170 AC: 5 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68032

Other (OTH) AF: 0.000473 AC: 1 AN: 2112

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000227

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	1	-	Alternating hemiplegia of childhood 2 (1)
-	1	-	Dystonia 12 (1)
-	1	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.080
BayesDel_noAF	Benign	-0.85
CADD	Benign	0.022
DANN	Benign	0.90
PhyloP100		-2.1

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: rs781980860; hg19: chr19-42470791;