rs780110299

Positions:

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 1P and 4B. PP2BS2

The ENST00000357077.9(ANK2):c.3572G>A(p.Arg1191Gln) variant causes a missense change. The variant allele was found at a frequency of 0.0000223 in 1,613,864 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R1191W) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000022 ( 0 hom. )

Consequence

ANK2
ENST00000357077.9 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:5

Conservation

PhyloP100: 4.71

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:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

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.

BS2

High AC in GnomAdExome4 at 32 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ANK2	NM_001148.6 linkuse as main transcript	c.3572G>A	p.Arg1191Gln	missense_variant	30/46	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.3572G>A	p.Arg1191Gln	missense_variant	30/46	1	NM_001148.6	ENSP00000349588	A2	Q01484-4

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152162

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.0000943

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000160

AC:

AN:

249900

Hom.:

AF XY:

0.00000740

AC XY:

AN XY:

135176

show subpopulations

Gnomad AFR exome

AF:

0.0000619

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:

0.0000267

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000219

AC:

AN:

1461702

Hom.:

Cov.:

AF XY:

0.0000234

AC XY:

AN XY:

727152

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

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:

0.0000187

Gnomad4 NFE exome

AF:

0.0000252

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152162

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74330

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.0000943

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000214

Hom.:

Bravo

AF:

0.0000227

ExAC

AF:

0.0000330

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.000119

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Jan 10, 2018

Variant summary: The ANK2 c.3572G>A (p.Arg1191Gln) variant involves the alteration of a conserved nucleotide located in the ZU5 domain (IPR000906). 3/4 in silico tools predict a damaging outcome for this variant. This variant was found in 7/275606 control chromosomes in gnomAD at a frequency of 0.0000254, which is approximately 3 times the estimated maximal expected allele frequency of a pathogenic ANK2 variant (0.00001), suggesting this variant is likely a benign polymorphism. Multiple clinical diagnostic laboratories/reputable databases classified this variant as uncertain significance. The variant of interest has not, to our knowledge, been reported in affected individuals via publications nor evaluated for functional impact by in vivo/vitro studies. Taken together, this variant is classified as VUS - possibly benign variant until addiitonal evidence becomes available. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Aug 09, 2013

p.Arg1191Gln (CGG>CAG): c.3572 G>A in exon 30 of the ANK2 gene (NM_001148.4). The Arg1191Gln variant in the ANK2 gene has not been reported as a disease-causing mutation or as a benign polymorphism to our knowledge. Arg1191Gln results in a semi-conservative amino acid substitution of positively charged Arginine with a neutral, polar Glutamine at a position that is conserved across species. In silico analysis predicts Arg1191Gln is damaging to the protein structure/function. The Arg1191Gln variant was not observed in approximately 6,500 individuals of European and African American ancestry in the NHLBI Exome Sequencing Project, indicating it is not a common benign variant in these populations. However, no mutations in nearby residues have been reported in association with LQTS. With the clinical and molecular information available at this time, we cannot definitively determine if Arg1191Gln is a disease-causing mutation or a rare benign variant. The variant is found in LQT panel(s). -

Long QT syndrome

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 28, 2023

This sequence change replaces arginine, which is basic and polar, with glutamine, which is neutral and polar, at codon 1191 of the ANK2 protein (p.Arg1191Gln). This variant is present in population databases (rs780110299, gnomAD 0.004%). This variant has not been reported in the literature in individuals affected with ANK2-related conditions. ClinVar contains an entry for this variant (Variation ID: 190567). 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 with a negative predictive value of 80%. 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. -

Cardiovascular phenotype

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 07, 2022

The p.R1191Q variant (also known as c.3572G>A), located in coding exon 30 of the ANK2 gene, results from a G to A substitution at nucleotide position 3572. The arginine at codon 1191 is replaced by glutamine, an amino acid with highly similar properties. This variant was reported in a large pediatric neurodevelopmental delay cohort; however, clinical details were limited (Wang T et al. Nat Commun, 2020 10;11:4932). This amino acid position is well conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. According to data from gnomAD, the frequency for this variant is above the maximum credible frequency for a cardiac disease-causing variant in this gene based on internally established thresholds (Karczewski et al. Nature. 2020 May;581(7809):434-443; Whiffin et al. Genet Med. 2017 10;19:1151-1158). Based on the supporting evidence, the association of this alteration with ANK2-related neurodevelopmental disorder is unknown; however, the association with ANK2-related arrhythmia is unlikely. -

Cardiac arrhythmia, ankyrin-B-related

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Nov 01, 2021

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.83

BayesDel_addAF

Uncertain

0.12

BayesDel_noAF

Uncertain

0.11

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.35

T;.;T;.;D;T;T;T

Eigen

Uncertain

0.63

Eigen_PC

Uncertain

0.62

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Pathogenic

0.99

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

M_CAP

Uncertain

0.096

MetaRNN

Uncertain

0.74

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

MetaSVM

Uncertain

0.049

MutationAssessor

Uncertain

2.2

.;.;.;M;M;.;.;.

MutationTaster

Benign

1.0

D;D;D;D;D

PrimateAI

Pathogenic

0.83

PROVEAN

Uncertain

-3.3

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

REVEL

Uncertain

0.56

Sift

Uncertain

0.0030

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

Sift4G

Uncertain

0.0060

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

Polyphen

0.97, 0.97, 0.99

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

Vest4

0.47, 0.56, 0.72, 0.61, 0.46

MVP

0.78

MPC

1.6

ClinPred

0.99

GERP RS

5.3

Varity_R

0.78

gMVP

0.47

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

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