rs399754

Positions:

• chr4-113171161-G-A
• chr4-113171161-G-C
• chr4-113171161-G-T

Variant summary

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

The NM_001148.6(ANK2):​c.85-3255G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.693 in 152,070 control chromosomes in the GnomAD database, including 37,274 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 0.69 (37274 hom., cov: 32)
• Consequence: ANK2 NM_001148.6 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.72

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]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.89).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.819 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ANK2	NM_001148.6	c.85-3255G>A		intron_variant		ENST00000357077.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ANK2	ENST00000357077.9	c.85-3255G>A		intron_variant		1	NM_001148.6	A2

Frequencies

GnomAD3 genomes AF: 0.693 AC: 105286 AN: 151952 Hom.: 37245 Cov.: 32

Gnomad AFR AF: 0.826

Gnomad AMI AF: 0.689

Gnomad AMR AF: 0.576

Gnomad ASJ AF: 0.701

Gnomad EAS AF: 0.479

Gnomad SAS AF: 0.622

Gnomad FIN AF: 0.692

Gnomad MID AF: 0.617

Gnomad NFE AF: 0.661

Gnomad OTH AF: 0.665

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

GnomAD4 genome AF: 0.693 AC: 105363 AN: 152070 Hom.: 37274 Cov.: 32 AF XY: 0.689 AC XY: 51267 AN XY: 74356

Gnomad4 AFR AF: 0.826

Gnomad4 AMR AF: 0.575

Gnomad4 ASJ AF: 0.701

Gnomad4 EAS AF: 0.479

Gnomad4 SAS AF: 0.621

Gnomad4 FIN AF: 0.692

Gnomad4 NFE AF: 0.661

Gnomad4 OTH AF: 0.656

Alfa AF: 0.659 Hom.: 53718

Bravo AF: 0.690

Asia WGS AF: 0.542 AC: 1886 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.89
CADD	Benign	4.5
DANN	Benign	0.51

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: rs399754; hg19: chr4-114092317;