rs748501600
Variant summary
Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PP2PP3BS2
The NM_001035.3(RYR2):c.10897G>A(p.Glu3633Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000081 in 1,605,122 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 (★★). Synonymous variant affecting the same amino acid position (i.e. E3633E) has been classified as Likely benign.
Frequency
Consequence
NM_001035.3 missense
Scores
Clinical Significance
Conservation
Publications
- arrhythmogenic right ventricular dysplasia 2Inheritance: AD Classification: DEFINITIVE, NO_KNOWN Submitted by: Laboratory for Molecular Medicine, Ambry Genetics
- catecholaminergic polymorphic ventricular tachycardiaInheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen, G2P
- catecholaminergic polymorphic ventricular tachycardia 1Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
- hypertrophic cardiomyopathyInheritance: AD Classification: LIMITED Submitted by: ClinGen
- arrhythmogenic right ventricular cardiomyopathyInheritance: AD Classification: NO_KNOWN Submitted by: ClinGen
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ACMG classification
Our verdict: Likely_benign. The variant received -2 ACMG points.
Transcripts
RefSeq
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| RYR2 | ENST00000366574.7 | c.10897G>A | p.Glu3633Lys | missense_variant | Exon 77 of 105 | 1 | NM_001035.3 | ENSP00000355533.2 | ||
| RYR2 | ENST00000661330.2 | c.10897G>A | p.Glu3633Lys | missense_variant | Exon 77 of 106 | ENSP00000499393.2 | ||||
| RYR2 | ENST00000609119.2 | n.*1932G>A | non_coding_transcript_exon_variant | Exon 75 of 104 | 5 | ENSP00000499659.2 | ||||
| RYR2 | ENST00000609119.2 | n.*1932G>A | 3_prime_UTR_variant | Exon 75 of 104 | 5 | ENSP00000499659.2 |
Frequencies
GnomAD3 genomes AF: 0.00000658 AC: 1AN: 152084Hom.: 0 Cov.: 33 show subpopulations
GnomAD2 exomes AF: 0.0000121 AC: 3AN: 248568 AF XY: 0.0000148 show subpopulations
GnomAD4 exome AF: 0.00000826 AC: 12AN: 1453038Hom.: 0 Cov.: 27 AF XY: 0.00000968 AC XY: 7AN XY: 723292 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.00000658 AC: 1AN: 152084Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0AN XY: 74298 show subpopulations
ClinVar
Submissions by phenotype
not provided Uncertain:2
- -
This variant is denoted Glu3633Lys (aka E3633K) at the protein level and c.10897 G>A at the cDNA level. The Glu3633Lys variant in the RYR2 gene has not been reported previously as a disease-causing mutation nor as a benign polymorphism, to our knowledge. Glu3633Lys results in a non-conservative amino acid substitution of a negatively charged Glutamic acid with a positively charged Lysine at a residue that is conserved across species. However, the Glu3633Lys variant does not occur in or near any of the three mutation hot spot regions in the RYR2 gene. We cannot unequivocally determine whether the Glu3633Lys variant is disease-causing mutations or benign variants. The variant is found in CPVT panel(s). -
Catecholaminergic polymorphic ventricular tachycardia Uncertain:1
This missense variant replaces glutamic acid with lysine at codon 3633 of the RYR2 protein. Computational prediction suggests that this variant may have deleterious impact on protein structure and function (internally defined REVEL score threshold >= 0.7, PMID: 27666373). 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 3/248568 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
This missense variant replaces glutamic acid with lysine at codon 3633 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 RYR2-related disorders in the literature. This variant has been identified in 3/248568 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. -
Catecholaminergic polymorphic ventricular tachycardia 1 Uncertain:1
This sequence change replaces glutamic acid, which is acidic and polar, with lysine, which is basic and polar, at codon 3633 of the RYR2 protein (p.Glu3633Lys). This variant is present in population databases (rs748501600, 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: 201348). 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) has been performed at Invitae 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. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. 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
The p.E3633K variant (also known as c.10897G>A), located in coding exon 77 of the RYR2 gene, results from a G to A substitution at nucleotide position 10897. The glutamic acid at codon 3633 is replaced by lysine, an amino acid with similar properties. This amino acid position is well conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Based on the available evidence, the clinical significance of this variant remains unclear. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at