rs749618476

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 3P and 5B. PP2PP3_ModerateBS1_SupportingBS2

The NM_001035.3(RYR2):c.8147A>T(p.Lys2716Ile) variant causes a missense change. The variant allele was found at a frequency of 0.0000581 in 1,513,926 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000060 ( 0 hom. )

Consequence

RYR2
NM_001035.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:11

Conservation

PhyloP100: 6.21

Variant links:

Genes affected

RYR2 (HGNC:10484): (ryanodine receptor 2) This gene encodes a ryanodine receptor found in cardiac muscle sarcoplasmic reticulum. The encoded protein is one of the components of a calcium channel, composed of a tetramer of the ryanodine receptor proteins and a tetramer of FK506 binding protein 1B proteins, that supplies calcium to cardiac muscle. Mutations in this gene are associated with stress-induced polymorphic ventricular tachycardia and arrhythmogenic right ventricular dysplasia. [provided by RefSeq, Jul 2008]

RYR2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PP2

Missense variant in the RYR2 gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 195 curated pathogenic missense variants (we use a threshold of 10). The gene has 55 curated benign missense variants. Gene score misZ: 5.7809 (above the threshold of 3.09). Trascript score misZ: 6.4158 (above the threshold of 3.09). GenCC associations: The gene is linked to hypertrophic cardiomyopathy, arrhythmogenic right ventricular cardiomyopathy, catecholaminergic polymorphic ventricular tachycardia 1, arrhythmogenic right ventricular dysplasia 2, catecholaminergic polymorphic ventricular tachycardia.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.889

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.0000395 (6/152060) while in subpopulation NFE AF= 0.0000883 (6/67976). AF 95% confidence interval is 0.0000376. There are 0 homozygotes in gnomad4. There are 3 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

BS2

High AC in GnomAd4 at 6 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RYR2	NM_001035.3 link	c.8147A>T	p.Lys2716Ile	missense_variant	Exon 54 of 105	ENST00000366574.7	NP_001026.2	Q92736-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
RYR2	ENST00000366574.7 link	c.8147A>T	p.Lys2716Ile	missense_variant	Exon 54 of 105	1	NM_001035.3	ENSP00000355533.2	Q92736-1
RYR2	ENST00000609119.2 link	n.8147A>T		non_coding_transcript_exon_variant	Exon 54 of 104	5		ENSP00000499659.2	A0A590UK06
RYR2	ENST00000660292.2 link	c.8147A>T	p.Lys2716Ile	missense_variant	Exon 54 of 106			ENSP00000499787.2	A0A590UKB7
RYR2	ENST00000659194.3 link	c.8147A>T	p.Lys2716Ile	missense_variant	Exon 54 of 105			ENSP00000499653.3	A0A590UJZ8

Frequencies

GnomAD3 genomes

AF:

0.0000395

AC:

AN:

152060

Hom.:

Cov.:

show subpopulations

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:

0.0000883

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000444

AC:

AN:

135176

Hom.:

AF XY:

0.0000140

AC XY:

AN XY:

71532

show subpopulations

Gnomad AFR exome

AF:

0.00

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:

0.000110

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000602

AC:

AN:

1361866

Hom.:

Cov.:

AF XY:

0.0000730

AC XY:

AN XY:

671466

show subpopulations

Gnomad4 AFR exome

AF:

0.00

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:

0.00

Gnomad4 NFE exome

AF:

0.0000746

Gnomad4 OTH exome

AF:

0.0000531

GnomAD4 genome

AF:

0.0000395

AC:

AN:

152060

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74282

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000883

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.0000340

ExAC

AF:

0.0000101

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:11

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:6

Aug 03, 2023

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 28404607, 30847666) -

Nov 15, 2014

Eurofins Ntd Llc (ga)

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Clinical Genetics, Academic Medical Center

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Jul 01, 2024

CeGaT Center for Human Genetics Tuebingen

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

RYR2: PM2:Supporting -

Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Cardiovascular phenotype

Uncertain:2

Jun 21, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.K2716I variant (also known as c.8147A>T), located in coding exon 54 of the RYR2 gene, results from an A to T substitution at nucleotide position 8147. The lysine at codon 2716 is replaced by isoleucine, an amino acid with dissimilar properties. This variant has been detected in an exome sequencing cohort, and in a non-compaction cardiomyopathy cohort; however, clinical details were limited (Landstrom AP et al. Circ Arrhythm Electrophysiol, 2017 Apr;10; van Waning JI et al. J. Am. Coll. Cardiol., 2018 Feb;71:711-722). This alteration was also reported in a family with dilated cardiomyopathy and left bundle branch block who also carried an alteration in LMNA (Hoorntje ET et al. Circ Cardiovasc Genet, 2017 Aug;10:). This variant was also detected in a cardiomyopathy/arrhythmia genetic testing cohort; however, clinical details were limited, and additional cardiac variants were detected in some cases (van Lint FHM et al. Neth Heart J, 2019 Jun;27:304-309). This amino acid position is highly conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Apr 09, 2025

Molecular Diagnostic Laboratory for Inherited Cardiovascular Disease, Montreal Heart Institute

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Catecholaminergic polymorphic ventricular tachycardia

Uncertain:1

Dec 01, 2023

All of Us Research Program, National Institutes of Health

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This missense variant replaces lysine with isoleucine at codon 2716 of the RYR2 protein. Computational prediction suggests that this variant may have deleterious impact on protein structure and function (internally defined REVEL score threshold >= 0.7, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with cardiovascular disorders in the literature. This variant has been identified in 6/135176 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. -

Cardiomyopathy

Uncertain:1

Feb 15, 2024

Color Diagnostics, LLC DBA Color Health

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This missense variant replaces lysine with isoleucine at codon 2716 of the RYR2 protein. Computational prediction suggests that this variant may have deleterious impact on protein structure and function. To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with cardiovascular disorders in the literature. This variant has been identified in 6/135176 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. -

Catecholaminergic polymorphic ventricular tachycardia 1

Uncertain:1

Jan 29, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces lysine, which is basic and polar, with isoleucine, which is neutral and non-polar, at codon 2716 of the RYR2 protein (p.Lys2716Ile). This variant is present in population databases (rs749618476, gnomAD 0.01%). This missense change has been observed in individual(s) with arrhythmia (PMID: 30847666, 32152366). ClinVar contains an entry for this variant (Variation ID: 197961). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed for this missense variant. However, the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on RYR2 protein function. 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.80

BayesDel_addAF

Uncertain

0.023

BayesDel_noAF

Uncertain

0.010

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Pathogenic

0.89

D;T

Eigen

Pathogenic

0.83

Eigen_PC

Pathogenic

0.83

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.95

D;D

M_CAP

Pathogenic

0.62

MetaRNN

Pathogenic

0.89

D;D

MetaSVM

Pathogenic

0.88

MutationAssessor

Benign

1.7

L;.

PrimateAI

Uncertain

0.77

PROVEAN

Pathogenic

-6.2

D;.

REVEL

Pathogenic

0.72

Sift

Uncertain

0.0090

D;.

Polyphen

0.99

D;.

Vest4

0.63

MVP

0.81

MPC

1.5

ClinPred

0.90

GERP RS

6.2

Varity_R

0.69

gMVP

0.49

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