rs794728704

Positions:

• chr1-237778704-C-A

Variant summary

Our verdict is Pathogenic. Variant got 15 ACMG points: 15P and 0B. PM2 PP2 PP3_Strong PP5_Very_Strong

The NM_001035.3(RYR2):​c.11814C>A​(p.Ser3938Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: RYR2 NM_001035.3 missense
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:2
• Conservation: PhyloP100: 0.0260

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 Pathogenic. Variant got 15 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.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.967
• PP5: Variant 1-237778704-C-A is Pathogenic according to our data. Variant chr1-237778704-C-A is described in ClinVar as [Pathogenic]. Clinvar id is 201188.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr1-237778704-C-A is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RYR2	NM_001035.3	c.11814C>A	p.Ser3938Arg	missense_variant	88/105	ENST00000366574.7	NP_001026.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RYR2	ENST00000366574.7	c.11814C>A	p.Ser3938Arg	missense_variant	88/105	1	NM_001035.3	ENSP00000355533	P1
RYR2	ENST00000660292.2	c.11835C>A	p.Ser3945Arg	missense_variant	89/106			ENSP00000499787
RYR2	ENST00000659194.3	c.11802C>A	p.Ser3934Arg	missense_variant	88/105			ENSP00000499653
RYR2	ENST00000609119.2	c.*2906C>A		3_prime_UTR_variant, NMD_transcript_variant	87/104	5		ENSP00000499659

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 28

GnomAD4 genome Cov.: 33

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

GeneDx

Dec 14, 2012

p.Ser3938Arg (AGC>AGA): c.11814 C>A in exon 88 of the RYR2 gene (NM_001035.2). The Ser3938Arg mutation in the RYR2 gene has been reported in two unrelated patients with CPVT and it was absent from more than 400 reference alleles (Tester D et al., 2006; Medeiros-Domingo A et al., 2009). Additionally, NHLBI ESP Exome Variant Server reports Ser3938Arg was not observed in approximately 6,000 samples from individuals of European and African American backgrounds, indicating it is not a common benign variant in these populations. Ser3938Arg is located in the channel region, a mutation hot spot, in the RYR2 gene (Medeiros-Domingo A et al., 2009). In summary, Ser3938Arg in the RYR2 gene is interpreted as a disease-causing mutation. The variant is found in CPVT panel(s). -

Catecholaminergic polymorphic ventricular tachycardia 1 Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Nov 29, 2022

ClinVar contains an entry for this variant (Variation ID: 201188). This missense change has been observed in individual(s) with catecholaminergic polymorphic ventricular tachycardia (CPVT) (PMID: 16818210, 30403697; Invitae). In at least one individual the variant was observed to be de novo. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces serine, which is neutral and polar, with arginine, which is basic and polar, at codon 3938 of the RYR2 protein (p.Ser3938Arg). 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. For these reasons, this variant has been classified as Pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.48	D
BayesDel_noAF	Pathogenic	0.45
CADD	Benign	21
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.98	D;D
Eigen	Uncertain	0.54
Eigen_PC	Uncertain	0.43
FATHMM_MKL	Uncertain	0.91	D
LIST_S2	Pathogenic	1.0	D;D
M_CAP	Pathogenic	0.89	D
MetaRNN	Pathogenic	0.97	D;D
MetaSVM	Pathogenic	1.0	D
MutationAssessor	Pathogenic	3.5	H;.
MutationTaster	Benign	0.98	D
PrimateAI	Pathogenic	0.91	D
PROVEAN	Uncertain	-4.3	D;.
REVEL	Pathogenic	0.93
Sift	Pathogenic	0.0	D;.
Polyphen		1.0	D;.
Vest4		0.94
MutPred		0.87		Gain of MoRF binding (P = 0.0454);.;
MVP		1.0
MPC		2.0
ClinPred		0.99	D
GERP RS		3.9
Varity_R		0.87
gMVP		0.98

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: rs794728704; hg19: chr1-237942004;