chr4-113357013-G-A

Variant names:

• chr4-113357013-G-A
• rs374145576
• NM_001148.6:c.8395G>A

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP4_Moderate BS2

The NM_001148.6(ANK2):​c.8395G>A​(p.Asp2799Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000273 in 1,613,902 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D2799E) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.000033 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000027 (0 hom.)
• Consequence: ANK2 NM_001148.6 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:7 B:1
• Conservation: PhyloP100: 2.16
• Publications: 1 publications found

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 Gene-Disease associations (from GenCC):

• complex neurodevelopmental disorder

  Inheritance: AD Classification: DEFINITIVE, MODERATE Submitted by: Ambry Genetics, ClinGen
• Brugada syndrome

  Inheritance: AD Classification: LIMITED, NO_KNOWN Submitted by: Genomics England PanelApp, ClinGen
• catecholaminergic polymorphic ventricular tachycardia

  Inheritance: AD Classification: LIMITED, NO_KNOWN Submitted by: ClinGen, Genomics England PanelApp
• heart conduction disease

  Inheritance: AD Classification: LIMITED Submitted by: Genomics England PanelApp
• neurodevelopmental disorder

  Inheritance: AD Classification: LIMITED Submitted by: G2P
• cardiac arrhythmia, ankyrin-B-related

  Inheritance: Unknown, AD Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
• long QT syndrome

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

ACMG classification

Our verdict: Likely_benign. The variant received -6 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.0869737).
• BS2: High AC in GnomAd4 at 5 AD,Unknown gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001148.6. 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
	ANK2	NM_001148.6	MANE Select	c.8395G>A	p.Asp2799Asn	missense	Exon 38 of 46	NP_001139.3
	ANK2	NM_001386174.1		c.8536G>A	p.Asp2846Asn	missense	Exon 40 of 51	NP_001373103.1	H0Y933
	ANK2	NM_001386175.1		c.8512G>A	p.Asp2838Asn	missense	Exon 39 of 50	NP_001373104.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ANK2	ENST00000357077.9	TSL:1 MANE Select	c.8395G>A	p.Asp2799Asn	missense	Exon 38 of 46	ENSP00000349588.4	Q01484-4
	ANK2	ENST00000506344.6	TSL:1	c.8536G>A	p.Asp2846Asn	missense	Exon 40 of 51	ENSP00000422888.2	H0Y933
	ANK2	ENST00000394537.7	TSL:1	c.4427-3810G>A		intron	N/A	ENSP00000378044.3	Q01484-2

Frequencies

GnomAD3 genomes AF: 0.0000329 AC: 5 AN: 152114 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

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: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000735

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000359 AC: 9 AN: 250488 AF XY: 0.0000443

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000289

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000709

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000267 AC: 39 AN: 1461788 Hom.: 0 Cov.: 35 AF XY: 0.0000220 AC XY: 16 AN XY: 727198

African (AFR) AF: 0.00 AC: 0 AN: 33474

American (AMR) AF: 0.0000224 AC: 1 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26128

East Asian (EAS) AF: 0.00 AC: 0 AN: 39690

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.0000187 AC: 1 AN: 53414

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 0.0000324 AC: 36 AN: 1111944

Other (OTH) AF: 0.0000166 AC: 1 AN: 60392

GnomAD4 genome AF: 0.0000329 AC: 5 AN: 152114 Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2 AN XY: 74292

African (AFR) AF: 0.00 AC: 0 AN: 41424

American (AMR) AF: 0.00 AC: 0 AN: 15264

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5180

South Asian (SAS) AF: 0.00 AC: 0 AN: 4820

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10618

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000735 AC: 5 AN: 68020

Other (OTH) AF: 0.00 AC: 0 AN: 2092

Alfa AF: 0.000113 Hom.: 0

Bravo AF: 0.0000680

ESP6500AA AF: 0.00 AC: 0

ESP6500EA AF: 0.000116 AC: 1

ExAC AF: 0.0000165 AC: 2

EpiCase AF: 0.000273

EpiControl AF: 0.0000593

ClinVar

ClinVar submissions

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
-	3	-	Cardiac arrhythmia, ankyrin-B-related (3)
-	1	1	Cardiovascular phenotype (2)
-	1	-	Long QT syndrome (1)
-	1	-	not provided (1)
-	1	-	See cases (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.073
BayesDel_addAF	Benign	-0.37	T
BayesDel_noAF	Benign	-0.58
CADD	Benign	9.7
DANN	Uncertain	0.99
DEOGEN2	Benign	0.26	T
Eigen	Benign	-0.65
Eigen_PC	Benign	-0.67
FATHMM_MKL	Benign	0.44	N
LIST_S2	Benign	0.74	T
M_CAP	Benign	0.024	T
MetaRNN	Benign	0.087	T
MetaSVM	Benign	-0.93	T
MutationAssessor	Benign	0.81	L
PhyloP100		2.2
PrimateAI	Benign	0.24	T
PROVEAN	Benign	-0.16	N
REVEL	Benign	0.11
Sift	Uncertain	0.0050	D
Sift4G	Benign	0.16	T
Vest4		0.026
MVP		0.43
MPC		0.077
ClinPred		0.092	T
GERP RS		3.1
Varity_R		0.051
gMVP		0.0093
Mutation Taster		=94/6	polymorphism

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: rs374145576; hg19: chr4-114278169; COSMIC: COSV52163874; COSMIC: COSV52163874;