rs767258350

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PP2PP3BS1_SupportingBS2

The NM_001035.3(RYR2):c.6445A>G(p.Ile2149Val) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000864 in 1,608,282 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 (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I2149S) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000072 ( 0 hom., cov: 30)

Exomes 𝑓: 0.000088 ( 0 hom. )

Consequence

RYR2
NM_001035.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:7

Conservation

PhyloP100: 9.32

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 -3 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, 0.746

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.0000724 (11/151990) while in subpopulation NFE AF= 0.000103 (7/68006). AF 95% confidence interval is 0.0000477. There are 0 homozygotes in gnomad4. There are 5 alleles in male gnomad4 subpopulation. Median coverage is 30. 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 11 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RYR2	NM_001035.3 link	c.6445A>G	p.Ile2149Val	missense_variant	Exon 42 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.6445A>G	p.Ile2149Val	missense_variant	Exon 42 of 105	1	NM_001035.3	ENSP00000355533.2	Q92736-1
RYR2	ENST00000609119.2 link	n.6445A>G		non_coding_transcript_exon_variant	Exon 42 of 104	5		ENSP00000499659.2	A0A590UK06
RYR2	ENST00000660292.2 link	c.6445A>G	p.Ile2149Val	missense_variant	Exon 42 of 106			ENSP00000499787.2	A0A590UKB7
RYR2	ENST00000659194.3 link	c.6445A>G	p.Ile2149Val	missense_variant	Exon 42 of 105			ENSP00000499653.3	A0A590UJZ8

Frequencies

GnomAD3 genomes

AF:

0.0000724

AC:

AN:

151990

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000967

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:

0.000103

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000202

AC:

AN:

247940

Hom.:

AF XY:

0.0000297

AC XY:

AN XY:

134496

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:

0.0000445

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000879

AC:

128

AN:

1456292

Hom.:

Cov.:

AF XY:

0.0000938

AC XY:

AN XY:

724700

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:

0.000113

Gnomad4 OTH exome

AF:

0.0000498

GnomAD4 genome

AF:

0.0000724

AC:

AN:

151990

Hom.:

Cov.:

AF XY:

0.0000673

AC XY:

AN XY:

74250

show subpopulations

Gnomad4 AFR

AF:

0.0000967

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:

0.000103

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000301

Hom.:

Bravo

AF:

0.0000529

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:7

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Mar 15, 2014

Stanford Center for Inherited Cardiovascular Disease, Stanford University

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: clinical testing

Note this variant was found in clinical genetic testing performed by one or more labs who may also submit to ClinVar. Thus any internal case data may overlap with the internal case data of other labs. The interpretation reviewed below is that of the Stanford Center for Inherited Cardiovascular Disease. p.Ile2149Val (p.I2149V, c.6445 A>G) in RYR2 The variant is novel. In silico analysis predicts the variant to be possibly damaging. The isoleucine at codon 2149 is conserved across species, as are neighboring amino acids. This is a conservative amino acid change with a Grantham score of 29. I found one other variant reported in association with disease at a nearby codon (p.Gly2145Arg). In total the variant has not been seen in ~6200 individuals from publicly available population datasets. There is no variation at codon 2149 listed in the NHLBI Exome Sequencing Project dataset, which currently includes variant calls on 6200 Caucasian and African American individuals (as of January 2014). There is also no variation at this codon listed in dbSNP (as of January 2014). -

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 isoleucine with valine at codon 2149 of the RYR2 protein. Computational prediction tools and conservation analyses are inconclusive regarding the impact of this variant on protein structure and function. Splice site prediction tools suggest that this variant may not impact RNA splicing. To our knowledge, functional studies have not been performed for this variant. This variant has not been reported in individuals affected with cardiovascular disorders in the literature. This variant has been identified in 7/279256 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

Dec 09, 2022

Color Diagnostics, LLC DBA Color Health

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This missense variant replaces isoleucine with valine at codon 2149 of the RYR2 protein. Computational prediction is inconclusive regarding the impact of this variant on protein structure and function (internally defined REVEL score threshold 0.5 < inconclusive < 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 7/279256 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. -

not provided

Uncertain:1

Sep 16, 2019

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Reported in a heterozygous individual who underwent clinical whole exome sequencing, however, clinical details regarding the indication for testing were not available (Landstrom et al., 2017); Reported in ClinVar as a variant of uncertain significance but additional evidence is not available (ClinVar Variant ID 201262; Landrum et al., 2016); Is not located in one of the three hot-spot regions of the RYR2 gene, where the majority of pathogenic missense variants occur (Medeiros-Domingo et al., 2009); In silico analysis, which includes protein predictors and evolutionary conservation, supports that this variant does not alter protein structure/function; This variant is associated with the following publications: (PMID: 28404607) -

Catecholaminergic polymorphic ventricular tachycardia 1;C1832931:Arrhythmogenic right ventricular dysplasia 2;C5542154:Ventricular arrhythmias due to cardiac ryanodine receptor calcium release deficiency syndrome

Uncertain:1

Oct 25, 2021

Fulgent Genetics, Fulgent Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Catecholaminergic polymorphic ventricular tachycardia 1

Uncertain:1

Jan 30, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces isoleucine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 2149 of the RYR2 protein (p.Ile2149Val). This variant is present in population databases (rs767258350, gnomAD 0.004%). This variant has not been reported in the literature in individuals affected with RYR2-related conditions. ClinVar contains an entry for this variant (Variation ID: 201262). 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. -

Cardiovascular phenotype

Uncertain:1

Dec 01, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.I2149V variant (also known as c.6445A>G), located in coding exon 42 of the RYR2 gene, results from an A to G substitution at nucleotide position 6445. The isoleucine at codon 2149 is replaced by valine, an amino acid with highly similar properties. This alteration has been reported in a whole exome sequencing (WES) cohort; however, clinical details were limited (Landstrom AP et al. Circ Arrhythm Electrophysiol, 2017 Apr;10:[ePub ahead of print]). 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.41

BayesDel_addAF

Pathogenic

0.18

BayesDel_noAF

Uncertain

0.12

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.70

D;D

Eigen

Uncertain

0.52

Eigen_PC

Uncertain

0.55

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.94

D;D

M_CAP

Pathogenic

0.37

MetaRNN

Pathogenic

0.75

D;D

MetaSVM

Uncertain

0.77

MutationAssessor

Benign

1.7

L;.

PrimateAI

Pathogenic

0.83

PROVEAN

Benign

-0.78

N;.

REVEL

Pathogenic

0.69

Sift

Benign

0.060

T;.

Polyphen

0.84

P;.

Vest4

0.46

MutPred

0.64

Loss of catalytic residue at I2149 (P = 0.0702);.;

MVP

0.92

MPC

0.99

ClinPred

0.53

GERP RS

5.4

Varity_R

0.11

gMVP

0.33

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