rs762330744

Positions:

• chr1-160130460-C-G
• chr1-160130460-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 3P and 2B. PM2 PP2 BP4_Moderate

The NM_000702.4(ATP1A2):​c.1690C>G​(p.Arg564Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,894 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R564Q) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: ATP1A2 NM_000702.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.816

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 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), ATP1A2. . Gene score misZ 4.7713 (greater than the threshold 3.09). Trascript score misZ 6.824 (greater than threshold 3.09). GenCC has associacion of gene with 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=0.15552413).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ATP1A2	NM_000702.4	c.1690C>G	p.Arg564Gly	missense_variant	13/23	ENST00000361216.8	NP_000693.1
ATP1A2	XM_047421286.1	c.799C>G	p.Arg267Gly	missense_variant	6/16		XP_047277242.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ATP1A2	ENST00000361216.8	c.1690C>G	p.Arg564Gly	missense_variant	13/23	1	NM_000702.4	ENSP00000354490.3
ATP1A2	ENST00000392233.7	c.1690C>G	p.Arg564Gly	missense_variant	13/23	5		ENSP00000376066.3
ATP1A2	ENST00000447527.1	c.820C>G	p.Arg274Gly	missense_variant	6/16	2		ENSP00000411705.1
ATP1A2	ENST00000472488.5	n.1793C>G		non_coding_transcript_exon_variant	13/20	2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461894 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 727248

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: 0.00000180

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.23
BayesDel_addAF	Benign	-0.022	T
BayesDel_noAF	Benign	-0.27
CADD	Benign	22
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.64	D;.
Eigen	Benign	-0.53
Eigen_PC	Benign	-0.36
FATHMM_MKL	Benign	0.19	N
LIST_S2	Uncertain	0.92	D;D
M_CAP	Benign	0.021	T
MetaRNN	Benign	0.16	T;T
MetaSVM	Benign	-0.98	T
MutationAssessor	Benign	0.085	N;.
PrimateAI	Uncertain	0.52	T
PROVEAN	Uncertain	-2.4	N;N
REVEL	Benign	0.27
Sift	Benign	0.053	T;D
Sift4G	Benign	0.20	T;T
Polyphen		0.0	B;B
Vest4		0.26
MutPred		0.37		Loss of solvent accessibility (P = 0.0193);Loss of solvent accessibility (P = 0.0193);
MVP		0.67
MPC		1.1
ClinPred		0.46	T
GERP RS		3.6
Varity_R		0.19
gMVP		0.87

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: rs762330744; hg19: chr1-160100250;