rs632895

Positions:

• chr4-113067357-G-A

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_001148.6(ANK2):​c.84+17545G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.234 in 152,028 control chromosomes in the GnomAD database, including 5,777 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.23 (5777 hom., cov: 32)
• Consequence: ANK2 NM_001148.6 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.594

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-AS1 (HGNC:40076): (ANK2 antisense RNA 1)

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.91).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.456 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ANK2	NM_001148.6	c.84+17545G>A		intron_variant		ENST00000357077.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ANK2	ENST00000357077.9	c.84+17545G>A		intron_variant		1	NM_001148.6	A2
ANK2-AS1	ENST00000508959.1	n.125+4481C>T		intron_variant, non_coding_transcript_variant		2

Frequencies

GnomAD3 genomes AF: 0.234 AC: 35481 AN: 151910 Hom.: 5768 Cov.: 32

Gnomad AFR AF: 0.462

Gnomad AMI AF: 0.262

Gnomad AMR AF: 0.228

Gnomad ASJ AF: 0.169

Gnomad EAS AF: 0.0503

Gnomad SAS AF: 0.166

Gnomad FIN AF: 0.0728

Gnomad MID AF: 0.259

Gnomad NFE AF: 0.143

Gnomad OTH AF: 0.242

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.234 AC: 35540 AN: 152028 Hom.: 5777 Cov.: 32 AF XY: 0.229 AC XY: 16988 AN XY: 74322

Gnomad4 AFR AF: 0.462

Gnomad4 AMR AF: 0.228

Gnomad4 ASJ AF: 0.169

Gnomad4 EAS AF: 0.0501

Gnomad4 SAS AF: 0.165

Gnomad4 FIN AF: 0.0728

Gnomad4 NFE AF: 0.143

Gnomad4 OTH AF: 0.243

Alfa AF: 0.162 Hom.: 3295

Bravo AF: 0.254

Asia WGS AF: 0.139 AC: 486 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.91
CADD	Benign	4.3
DANN	Benign	0.44

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: rs632895; hg19: chr4-113988513;