1-237708991-G-T

Position:

• chr1-237708991-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP2

The NM_001035.3(RYR2):​c.10035G>T​(p.Arg3345Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★). Another nucleotide change resulting in same amino acid change has been previously reported as Uncertain significancein ClinVar. Synonymous variant affecting the same amino acid position (i.e. R3345R) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: RYR2 NM_001035.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.683

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 Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), RYR2. . Gene score misZ 5.7809 (greater than the threshold 3.09). Trascript score misZ 6.4158 (greater than threshold 3.09). GenCC has associacion of gene with hypertrophic cardiomyopathy, arrhythmogenic right ventricular cardiomyopathy, catecholaminergic polymorphic ventricular tachycardia 1, arrhythmogenic right ventricular dysplasia 2, catecholaminergic polymorphic ventricular tachycardia.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RYR2	NM_001035.3	c.10035G>T	p.Arg3345Ser	missense_variant	69/105	ENST00000366574.7	NP_001026.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RYR2	ENST00000366574.7	c.10035G>T	p.Arg3345Ser	missense_variant	69/105	1	NM_001035.3	ENSP00000355533.2
RYR2	ENST00000609119.2	n.*1070G>T		non_coding_transcript_exon_variant	67/104	5		ENSP00000499659.2
RYR2	ENST00000609119.2	n.*1070G>T		3_prime_UTR_variant	67/104	5		ENSP00000499659.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Catecholaminergic polymorphic ventricular tachycardia 1 Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jul 26, 2022

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. 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 not expected to disrupt RYR2 protein function. ClinVar contains an entry for this variant (Variation ID: 1011126). This variant has not been reported in the literature in individuals affected with RYR2-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces arginine, which is basic and polar, with serine, which is neutral and polar, at codon 3345 of the RYR2 protein (p.Arg3345Ser). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.57
BayesDel_addAF	Pathogenic	0.40	D
BayesDel_noAF	Pathogenic	0.33
CADD	Benign	13
DANN	Uncertain	0.98
DEOGEN2	Uncertain	0.54	D;T
Eigen	Benign	-0.13
Eigen_PC	Benign	-0.16
FATHMM_MKL	Uncertain	0.83	D
LIST_S2	Uncertain	0.93	D;D
M_CAP	Pathogenic	0.34	D
MetaRNN	Uncertain	0.60	D;D
MetaSVM	Uncertain	0.32	D
MutationAssessor	Benign	1.9	L;.
PrimateAI	Uncertain	0.61	T
PROVEAN	Uncertain	-3.0	D;.
REVEL	Uncertain	0.61
Sift	Benign	0.15	T;.
Polyphen		0.85	P;.
Vest4		0.78
MutPred		0.22		Gain of glycosylation at R3345 (P = 0.0053);.;
MVP		0.97
MPC		0.79
ClinPred		0.96	D
GERP RS		-0.44
Varity_R		0.24
gMVP		0.38

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: rs754976419; hg19: chr1-237872291;