rs146964054

Positions:

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP2

The NM_001148.6(ANK2):c.198C>A(p.Asn66Lys) 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 1,461,154 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. N66N) has been classified as Benign.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

ANK2
NM_001148.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.0160

Variant links:

Genes affected

ANK2 (HGNC:493): (ankyrin 2) This gene encodes a member of the ankyrin family of proteins that link the integral membrane proteins to the underlying spectrin-actin cytoskeleton. Ankyrins play key roles in activities such as cell motility, activation, proliferation, contact and the maintenance of specialized membrane domains. Most ankyrins are typically composed of three structural domains: an amino-terminal domain containing multiple ankyrin repeats; a central region with a highly conserved spectrin binding domain; and a carboxy-terminal regulatory domain which is the least conserved and subject to variation. The protein encoded by this gene is required for targeting and stability of Na/Ca exchanger 1 in cardiomyocytes. Mutations in this gene cause long QT syndrome 4 and cardiac arrhythmia syndrome. Multiple transcript variants encoding different isoforms have been described. [provided by RefSeq, Dec 2011]

ANK2 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 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), ANK2. . Gene score misZ 1.9641 (greater than the threshold 3.09). Trascript score misZ 4.2513 (greater than threshold 3.09). GenCC has associacion of gene with heart conduction disease, Brugada syndrome, long QT syndrome, complex neurodevelopmental disorder, cardiac arrhythmia, ankyrin-B-related, catecholaminergic polymorphic ventricular tachycardia.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ANK2	NM_001148.6 linkuse as main transcript	c.198C>A	p.Asn66Lys	missense_variant	3/46	ENST00000357077.9	NP_001139.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ANK2	ENST00000357077.9 linkuse as main transcript	c.198C>A	p.Asn66Lys	missense_variant	3/46	1	NM_001148.6	ENSP00000349588	A2	Q01484-4

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000801

AC:

AN:

249600

Hom.:

AF XY:

0.00000742

AC XY:

AN XY:

134766

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000177

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000205

AC:

AN:

1461154

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

726792

show subpopulations

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:

0.00000270

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000378

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Long QT syndrome

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 06, 2023

This sequence change replaces asparagine, which is neutral and polar, with lysine, which is basic and polar, at codon 66 of the ANK2 protein (p.Asn66Lys). This variant is present in population databases (rs146964054, gnomAD 0.002%). This variant has not been reported in the literature in individuals affected with ANK2-related conditions. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt ANK2 protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

1.0

BayesDel_addAF

Benign

-0.028

BayesDel_noAF

Benign

-0.26

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.29

.;T;.;T;.;T;T;T;T;T

Eigen

Benign

-0.21

Eigen_PC

Benign

-0.37

FATHMM_MKL

Benign

0.72

LIST_S2

Uncertain

0.92

D;D;D;D;D;D;D;D;D;D

M_CAP

Uncertain

0.13

MetaRNN

Uncertain

0.69

D;D;D;D;D;D;D;D;D;D

MetaSVM

Benign

-0.36

MutationAssessor

Benign

1.3

.;.;.;.;L;L;.;.;.;.

MutationTaster

Benign

1.0

D;D;D;D

PrimateAI

Pathogenic

0.91

PROVEAN

Pathogenic

-5.2

D;D;D;D;D;D;D;D;D;.

REVEL

Uncertain

0.44

Sift

Uncertain

0.0020

D;D;D;D;D;D;D;D;D;.

Sift4G

Pathogenic

0.0010

D;D;D;D;D;D;D;D;D;D

Polyphen

1.0, 1.0

.;.;D;.;D;D;.;.;.;.

Vest4

0.92, 0.92, 0.91, 0.90

MutPred

0.70

.;.;.;.;Gain of ubiquitination at N66 (P = 0.0289);Gain of ubiquitination at N66 (P = 0.0289);Gain of ubiquitination at N66 (P = 0.0289);.;.;.;

MVP

0.77

MPC

1.6

ClinPred

0.99

GERP RS

-5.3

Varity_R

0.89

gMVP

0.93

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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