rs397516497

chr1-237711772-G-A

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 1P and 4B. PP2 BS2

The NM_001035.3(RYR2):c.10258G>A(p.Val3420Ile) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000216 in 1,435,974 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. V3420V) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.000022 (0 hom.)
• Consequence: RYR2 NM_001035.3 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:6
• Conservation: PhyloP100: 10.0

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]

ACMG classification

Verdict is Likely_benign. Variant got -3 ACMG points.

• PP2: Missense variant where missense usually causes diseases, RYR2
• BS2: High AC in GnomAdExome at 6 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RYR2	NM_001035.3	c.10258G>A	p.Val3420Ile	missense_variant	71/105	ENST00000366574.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RYR2	ENST00000366574.7	c.10258G>A	p.Val3420Ile	missense_variant	71/105	1	NM_001035.3	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD3 exomes AF: 0.0000250 AC: 6 AN: 240264 Hom.: 0 AF XY: 0.0000384 AC XY: 5 AN XY: 130096

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000565

Gnomad SAS exome AF: 0.000172

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000216 AC: 31 AN: 1435974 Hom.: 0 Cov.: 26 AF XY: 0.0000308 AC XY: 22 AN XY: 715186

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000759

Gnomad4 SAS exome AF: 0.000190

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000916

Gnomad4 OTH exome AF: 0.0000336

GnomAD4 genome Cov.: 33

ExAC AF: 0.0000331 AC: 4

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:6

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Nov 13, 2018

The p.Val3420Ile variant in RYR2 has been identified in 1 individual with arrhyt hmia and sudden cardiac arrest who carried an additional variant of uncertain si gnificance in RYR2 (LMM data). It has also been identified in 0.02% (5/29082) of South Asian chromosomes by gnomAD (http://gnomad.broadinstitute.org). Computati onal prediction tools and conservation analysis suggest that this variant may im pact the protein, though this information is not predictive enough to determine pathogenicity. In summary, the clinical significance of the p.Val3420Ile variant is uncertain. ACMG/AMP Criteria applied: PP3. -

Catecholaminergic polymorphic ventricular tachycardia Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

All of Us Research Program, National Institutes of Health

Feb 05, 2024

This missense variant replaces valine with isoleucine at codon 3420 of the RYR2 protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, 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 6/240264 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

Uncertain significance, criteria provided, single submitter

clinical testing

Color Diagnostics, LLC DBA Color Health

May 24, 2023

This missense variant replaces valine with isoleucine at codon 3420 of the RYR2 protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with RYR2-related disorders in the literature. This variant has been identified in 6/240264 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

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Jul 05, 2013

p.Val3420Ile (GTT>ATT): c.10258 G>A in exon 71 of the RYR2 gene (NM_001035.2). The Val3420Ile variant in the RYR2 gene has not been reported as a disease-causing mutation or as a benign polymorphism to our knowledge. Val3420Ile results in a conservative amino acid substitution of one non-polar amino acid with another at a position that is conserved across species. In silico analysis predicts Val3420Ile is probably damaging to the protein structure/function. The Val3420Ile variant was not observed in approximately 6,000 individuals of European and African American ancestry in the NHLBI Exome Sequencing Project, indicating it is not a common benign variant in these populations. Nevertheless, Val3420Ile is not located in a mutation hot spot" domain and no mutations in nearby codons have been reported in association with CPVT, indicating this region of the protein may be tolerant of change. We cannot definitively determine if Val3420Ile is a disease-causing mutation or a rare benign variant. The variant is found in CPVT panel(s)." -

Catecholaminergic polymorphic ventricular tachycardia 1 Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Aug 16, 2023

This sequence change replaces valine, which is neutral and non-polar, with isoleucine, which is neutral and non-polar, at codon 3420 of the RYR2 protein (p.Val3420Ile). This variant is present in population databases (rs397516497, gnomAD 0.02%). 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: 43697). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt 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

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 18, 2021

The c.10258G>A (p.V3420I) alteration is located in exon 71 (coding exon 71) of the RYR2 gene. This alteration results from a G to A substitution at nucleotide position 10258, causing the valine (V) at amino acid position 3420 to be replaced by an isoleucine (I). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.40
BayesDel_addAF	Benign	-0.048	T
BayesDel_noAF	Uncertain	-0.040
Cadd	Uncertain	25
Dann	Uncertain	1.0
DEOGEN2	Uncertain	0.42	T;T
Eigen	Pathogenic	0.69
Eigen_PC	Pathogenic	0.70
FATHMM_MKL	Pathogenic	1.0	D
LIST_S2	Pathogenic	0.99	D;D
M_CAP	Pathogenic	0.62	D
MetaRNN	Uncertain	0.42	T;T
MetaSVM	Pathogenic	0.94	D
MutationAssessor	Benign	1.2	L;.
MutationTaster	Benign	1.0	D
PrimateAI	Pathogenic	0.79	T
PROVEAN	Benign	-0.91	N;.
REVEL	Uncertain	0.48
Sift	Benign	0.43	T;.
Polyphen		1.0	D;.
Vest4		0.44
MutPred		0.28		Gain of helix (P = 0.132);.;
MVP		0.86
MPC		0.67
ClinPred		0.46	T
GERP RS		5.0
Varity_R		0.15
gMVP		0.35

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.060		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: rs397516497; hg19: chr1-237875072;