19-41982027-C-G

Variant names:

• chr19-41982027-C-G
• rs1555863693
• NM_152296.5:c.1073G>C

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM2 PP2 PP3_Strong

The NM_152296.5(ATP1A3):​c.1073G>C​(p.Gly358Ala) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 31)
• Consequence: ATP1A3 NM_152296.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.88

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]

ENSG00000285505 (HGNC:):

ACMG classification

Verdict is Likely_pathogenic. Variant got 7 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the ATP1A3 gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 110 curated pathogenic missense variants (we use a threshold of 10). The gene has 22 curated benign missense variants. Gene score misZ: 6.3327 (above the threshold of 3.09). Trascript score misZ: 9.1232 (above the threshold of 3.09). GenCC associations: The gene is linked to dystonia 12, alternating hemiplegia of childhood 2, ATP1A3-associated neurological disorder, developmental and epileptic encephalopathy 99, alternating hemiplegia of childhood, cerebellar ataxia-areflexia-pes cavus-optic atrophy-sensorineural hearing loss syndrome, alternating hemiplegia of childhood 1, encephalopathy, acute, infection-induced.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.958

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ATP1A3	NM_152296.5	c.1073G>C	p.Gly358Ala	missense_variant	Exon 9 of 23	ENST00000648268.1	NP_689509.1
ATP1A3	NM_001256214.2	c.1112G>C	p.Gly371Ala	missense_variant	Exon 9 of 23		NP_001243143.1
ATP1A3	NM_001256213.2	c.1106G>C	p.Gly369Ala	missense_variant	Exon 9 of 23		NP_001243142.1
ATP1A3	XM_047438862.1	c.983G>C	p.Gly328Ala	missense_variant	Exon 9 of 23		XP_047294818.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ATP1A3	ENST00000648268.1	c.1073G>C	p.Gly358Ala	missense_variant	Exon 9 of 23		NM_152296.5	ENSP00000498113.1
ENSG00000285505	ENST00000644613.1	n.1073G>C		non_coding_transcript_exon_variant	Exon 9 of 25			ENSP00000494711.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 31

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Dystonia 12 Uncertain:1

Aug 27, 2021

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.98
BayesDel_addAF	Pathogenic	0.50	D
BayesDel_noAF	Pathogenic	0.47
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.76	D;D;T;.;.
Eigen	Uncertain	0.62
Eigen_PC	Uncertain	0.58
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Pathogenic	0.99	.;D;D;D;D
M_CAP	Pathogenic	0.63	D
MetaRNN	Pathogenic	0.96	D;D;D;D;D
MetaSVM	Pathogenic	0.89	D
MutationAssessor	Benign	1.6	L;L;.;.;.
PrimateAI	Pathogenic	0.86	D
PROVEAN	Pathogenic	-5.1	.;D;.;D;D
REVEL	Pathogenic	0.94
Sift	Pathogenic	0.0	.;D;.;D;D
Sift4G	Pathogenic	0.0	.;D;D;D;D
Polyphen		1.0	D;D;.;.;.
Vest4		0.97, 0.94
MutPred		0.83		Loss of sheet (P = 0.1158);Loss of sheet (P = 0.1158);.;.;.;
MVP		0.99
MPC		2.7
ClinPred		1.0	D
GERP RS		4.2
Varity_R		0.97
gMVP		1.0

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

Other links and lift over

dbSNP: rs1555863693; hg19: chr19-42486179;