NM_001035.3:c.5414A>G

Variant names:

• chr1-237614542-A-G
• rs759774382
• NM_001035.3:c.5414A>G

Variant summary

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

The NM_001035.3(RYR2):​c.5414A>G​(p.His1805Arg) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,712 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. H1805H) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: RYR2 NM_001035.3 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 6.26

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 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.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RYR2	NM_001035.3	c.5414A>G	p.His1805Arg	missense_variant	Exon 37 of 105	ENST00000366574.7	NP_001026.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RYR2	ENST00000366574.7	c.5414A>G	p.His1805Arg	missense_variant	Exon 37 of 105	1	NM_001035.3	ENSP00000355533.2
RYR2	ENST00000609119.2	n.5414A>G		non_coding_transcript_exon_variant	Exon 37 of 104	5		ENSP00000499659.2
RYR2	ENST00000660292.2	c.5414A>G	p.His1805Arg	missense_variant	Exon 37 of 106			ENSP00000499787.2
RYR2	ENST00000659194.3	c.5414A>G	p.His1805Arg	missense_variant	Exon 37 of 105			ENSP00000499653.3

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD3 exomes AF: 0.00000402 AC: 1 AN: 248866 Hom.: 0 AF XY: 0.00000741 AC XY: 1 AN XY: 134986

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000556

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461712 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727138

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000252

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ExAC AF: 0.00000827 AC: 1

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Catecholaminergic polymorphic ventricular tachycardia 1 Uncertain:1

Oct 06, 2020

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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. This sequence change replaces histidine with arginine at codon 1805 of the RYR2 protein (p.His1805Arg). The histidine residue is highly conserved and there is a small physicochemical difference between histidine and arginine. This variant is present in population databases (rs759774382, ExAC 0.01%). This variant has not been reported in the literature in individuals with RYR2-related disease. Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C25". The arginine amino acid residue is found in multiple mammalian species, suggesting that this missense change does not adversely affect protein function. These predictions have not been confirmed by published functional studies and their clinical significance is uncertain. -

Cardiovascular phenotype Uncertain:1

Jun 10, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.H1805R variant (also known as c.5414A>G), located in coding exon 37 of the RYR2 gene, results from an A to G substitution at nucleotide position 5414. The histidine at codon 1805 is replaced by arginine, an amino acid with highly similar properties. This amino acid position is well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. 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	Benign	0.16
BayesDel_addAF	Benign	-0.17	T
BayesDel_noAF	Benign	-0.32
CADD	Benign	14
DANN	Benign	0.97
DEOGEN2	Pathogenic	0.92	D;D
Eigen	Benign	-0.21
Eigen_PC	Benign	-0.14
FATHMM_MKL	Uncertain	0.88	D
LIST_S2	Benign	0.81	T;T
M_CAP	Benign	0.038	D
MetaRNN	Uncertain	0.50	D;D
MetaSVM	Benign	-0.58	T
MutationAssessor	Uncertain	2.1	M;.
PrimateAI	Uncertain	0.63	T
PROVEAN	Pathogenic	-5.0	D;.
REVEL	Benign	0.21
Sift	Uncertain	0.026	D;.
Polyphen		0.0010	B;.
Vest4		0.25
MutPred		0.53		Gain of phosphorylation at S1803 (P = 0.0923);.;
MVP		0.78
MPC		0.44
ClinPred		0.41	T
GERP RS		3.2
Varity_R		0.23
gMVP		0.75

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: rs759774382; hg19: chr1-237777842;