rs1476195040
Variant summary
Our verdict is Likely benign. The variant received -1 ACMG points: 3P and 4B. PP2PP3_ModerateBS2
The NM_001035.3(RYR2):c.1517A>C(p.His506Pro) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000824 in 1,456,452 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 (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. H506L) has been classified as Uncertain significance.
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 -1 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| RYR2 | NM_001035.3 | c.1517A>C | p.His506Pro | missense_variant | Exon 16 of 105 | ENST00000366574.7 | NP_001026.2 |
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| RYR2 | ENST00000366574.7 | c.1517A>C | p.His506Pro | missense_variant | Exon 16 of 105 | 1 | NM_001035.3 | ENSP00000355533.2 | ||
| RYR2 | ENST00000661330.2 | c.1517A>C | p.His506Pro | missense_variant | Exon 16 of 106 | ENSP00000499393.2 | ||||
| RYR2 | ENST00000609119.2 | n.1517A>C | non_coding_transcript_exon_variant | Exon 16 of 104 | 5 | ENSP00000499659.2 |
Frequencies
GnomAD3 genomes Cov.: 33
GnomAD2 exomes AF: 0.00000406 AC: 1AN: 246442 AF XY: 0.00 show subpopulations
GnomAD4 exome AF: 0.00000824 AC: 12AN: 1456452Hom.: 0 Cov.: 39 AF XY: 0.00000690 AC XY: 5AN XY: 724484 show subpopulations
Age Distribution
GnomAD4 genome Cov.: 33
ClinVar
Submissions by phenotype
Cardiovascular phenotype Uncertain:2
- -
The p.H506P variant (also known as c.1517A>C), located in coding exon 16 of the RYR2 gene, results from an A to C substitution at nucleotide position 1517. The histidine at codon 506 is replaced by proline, an amino acid with similar properties. This variant was reported in a cohort of individuals with suspected catecholaminergic polymorphic ventricular tachycardia (CPVT); however, clinical details were limited (Kapplinger JD et al. Circ Genom Precis Med, 2018 02;11:e001424). This amino acid position is well conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -
Catecholaminergic polymorphic ventricular tachycardia Uncertain:1
This missense variant replaces histidine with proline at codon 506 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 1/246442 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 histidine, which is basic and polar, with proline, which is neutral and non-polar, at codon 506 of the RYR2 protein (p.His506Pro). This variant is present in population databases (no rsID available, gnomAD 0.0009%). 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: 1774329). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt RYR2 protein function with a negative predictive value of 95%. 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. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at