4-113355864-C-G

Variant names:

• chr4-113355864-C-G
• rs1309568447
• NM_001148.6:c.7246C>G

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001148.6(ANK2):​c.7246C>G​(p.Arg2416Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. 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. R2416Q) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: ANK2 NM_001148.6 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 2.32
• 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: ClinGen, Ambry Genetics
• Brugada syndrome

  Inheritance: AD Classification: LIMITED, NO_KNOWN Submitted by: Genomics England PanelApp, ClinGen
• cardiac arrhythmia, ankyrin-B-related

  Inheritance: AD, Unknown Classification: LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
• catecholaminergic polymorphic ventricular tachycardia

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

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

  Inheritance: AD Classification: LIMITED Submitted by: G2P
• long QT syndrome

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.21276787).

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.7246C>G	p.Arg2416Gly	missense	Exon 38 of 46	NP_001139.3
	ANK2	NM_001386174.1		c.7387C>G	p.Arg2463Gly	missense	Exon 40 of 51	NP_001373103.1
	ANK2	NM_001386175.1		c.7363C>G	p.Arg2455Gly	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.7246C>G	p.Arg2416Gly	missense	Exon 38 of 46	ENSP00000349588.4
	ANK2	ENST00000506344.6	TSL:1	c.7387C>G	p.Arg2463Gly	missense	Exon 40 of 51	ENSP00000422888.2
	ANK2	ENST00000394537.7	TSL:1	c.4427-4959C>G		intron	N/A	ENSP00000378044.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 35

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	1	-	Long QT syndrome (1)
-	1	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.15
BayesDel_addAF	Benign	-0.028	T
BayesDel_noAF	Benign	-0.28
CADD	Benign	19
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.43	T
Eigen	Uncertain	0.25
Eigen_PC	Uncertain	0.39
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Uncertain	0.90	D
M_CAP	Benign	0.017	T
MetaRNN	Benign	0.21	T
MetaSVM	Benign	-0.72	T
MutationAssessor	Benign	1.4	L
PhyloP100		2.3
PrimateAI	Benign	0.24	T
PROVEAN	Uncertain	-2.4	N
REVEL	Benign	0.15
Sift	Uncertain	0.0060	D
Sift4G	Benign	0.46	T
Vest4		0.20
MVP		0.49
MPC		0.27
ClinPred		0.74	D
GERP RS		6.1
Varity_R		0.20
gMVP		0.076
Mutation Taster		=85/15	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: rs1309568447; hg19: chr4-114277020;