rs727503404
Variant summary
Our verdict is Likely benign. The variant received -4 ACMG points: 1P and 5B. PP2BS1_SupportingBS2
The NM_001035.3(RYR2):c.10680T>A(p.His3560Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000713 in 1,611,782 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. H3560Y) 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 -4 ACMG points.
Transcripts
RefSeq
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| RYR2 | ENST00000366574.7 | c.10680T>A | p.His3560Gln | missense_variant | Exon 74 of 105 | 1 | NM_001035.3 | ENSP00000355533.2 | ||
| RYR2 | ENST00000661330.2 | c.10680T>A | p.His3560Gln | missense_variant | Exon 74 of 106 | ENSP00000499393.2 | ||||
| RYR2 | ENST00000609119.2 | n.*1715T>A | non_coding_transcript_exon_variant | Exon 72 of 104 | 5 | ENSP00000499659.2 | ||||
| RYR2 | ENST00000609119.2 | n.*1715T>A | 3_prime_UTR_variant | Exon 72 of 104 | 5 | ENSP00000499659.2 |
Frequencies
GnomAD3 genomes AF: 0.0000788 AC: 12AN: 152238Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.0000523 AC: 13AN: 248568 AF XY: 0.0000519 show subpopulations
GnomAD4 exome AF: 0.0000706 AC: 103AN: 1459544Hom.: 0 Cov.: 28 AF XY: 0.0000633 AC XY: 46AN XY: 726212 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.0000788 AC: 12AN: 152238Hom.: 0 Cov.: 32 AF XY: 0.0000538 AC XY: 4AN XY: 74380 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
not provided Uncertain:3
The RYR2 c.10680T>A; p.His3560Gln variant (rs727503404), to our knowledge, is not reported in the medical literature or gene specific databases. This variant is found in the general population with an overall allele frequency of 0.006 % (16/ 279,974 alleles) in the Genome Aggregation Database. The histidine at codon 3560 is highly conserved, but computational analyses (SIFT: tolerated PolyPhen-2: probably damaging) predict conflicting effects of this variant on protein structure / function. Due to limited information, the clinical significance of the p.His3560Gln variant is uncertain at this time. -
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Reported in one individual from a cohort of individuals not selected for cardiomyopathy, arrhythmia or family history of sudden cardiac death who underwent exome sequencing; however, a follow-up cardiac evaluation was not described (PMID: 23861362); Variant observed in unrelated individuals referred for cardiac genetic testing at GeneDx who had different genetic etiologies for their phenotypes; In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 19926015, 23861362) -
not specified Uncertain:2
The His3560Gln variant in RYR2 has been identified by our laboratory in 1 infant with DCM. It has also been detected in 1/948 chromosomes in a cohort that was not selected for cardiomyopathy by the ClinSeq study (Ng 2013). The affected ami no acid is conserved in evolution, suggesting that a change would not be tolerat ed. Other computational analyses do not provide strong support for or against a n impact to the protein. Additional information is needed to fully assess the cl inical significance of this variant. -
Variant summary: RYR2 c.10680T>A (p.His3560Gln) results in a non-conservative amino acid change in the encoded protein sequence. Four of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 5.7e-05 in 279974 control chromosomes (gnomAD), predominantly at a frequency of 0.00011 within the Non-Finnish European subpopulation in the gnomAD database. The observed variant frequency within Non-Finnish European control individuals in the gnomAD database is approximately 3 fold of the estimated maximal expected allele frequency for a pathogenic variant in RYR2 causing Catecholaminergic Polymorphic Ventricular Tachycardia phenotype (3.4e-05), strongly suggesting that the variant is a benign polymorphism found primarily in populations of Non-Finnish European origin. c.10680T>A has been reported in the literature in a study cohort of RYR2 positive individuals without a specific reported phenotype (Giudicessi_2019). This report does not provide unequivocal conclusions about association of the variant with Catecholaminergic Polymorphic Ventricular Tachycardia. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Eight ClinVar submitters have assessed the variant since 2014: all classified the variant as uncertain significance. Based on the evidence outlined above, the variant was classified as VUS-possibly benign. -
Cardiomyopathy Uncertain:2
This missense variant replaces histidine with glutamine at codon 3560 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). To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with cardiovascular disorders in the literature. This variant has been identified in 16/279974 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. -
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Catecholaminergic polymorphic ventricular tachycardia 1 Uncertain:2
Based on the classification scheme VCGS_Germline_v1.3.4, this variant is classified as 3C-VUS. Following criteria are met: 0103 - Dominant negative and gain of function are known mechanisms of disease in this gene and are associated with arrhythmogenic right ventricular dysplasia 2 (MIM#600996) and ventricular tachycardia, catecholaminergic polymorphic, 1 (CPVT) (MIM#604772) (PMID: 12459180, 27646203, 29477366). (I) 0107 - This gene is associated with autosomal dominant disease. (I) 0112 - The condition associated with this gene has incomplete penetrance (OMIM). (I) 0200 - Variant is predicted to result in a missense amino acid change from histidine to glutamine. (I) 0251 - This variant is heterozygous. (I) 0302 - Variant is present in gnomAD (v2) <0.001 for a dominant condition (16 heterozygotes, 0 homozygotes). (SP) 0501 - Missense variant consistently predicted to be damaging by multiple in silico tools or highly conserved with a major amino acid change. (SP) 0604 - Variant is not located in an established domain, motif, hotspot or informative constraint region. (I) 0705 - No comparable missense variants have previous evidence for pathogenicity. (I) 0809 - Previous evidence of pathogenicity for this variant is inconclusive. This variant has been previously reported as a VUS (ClinVar, PMID: 23861362) and has been observed once in the VCGS aortopathy cohort. (I) 0905 - No published segregation evidence has been identified for this variant. (I) 1007 - No published functional evidence has been identified for this variant. (I) 1208 - Inheritance information for this variant is not currently available in this individual. (I) Legend: (SP) - Supporting pathogenic, (I) - Information, (SB) - Supporting benign -
This sequence change replaces histidine, which is basic and polar, with glutamine, which is neutral and polar, at codon 3560 of the RYR2 protein (p.His3560Gln). This variant is present in population databases (rs727503404, gnomAD 0.01%). This missense change has been observed in individual(s) with clinical features of RYR2-related conditions (PMID: 31112425). ClinVar contains an entry for this variant (Variation ID: 165117). 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 expected to disrupt RYR2 protein function with a positive predictive value of 80%. 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. -
Catecholaminergic polymorphic ventricular tachycardia Uncertain:1
This missense variant replaces histidine with glutamine at codon 3560 of the RYR2 protein. Computational prediction tools and conservation analyses suggest that this variant may have deleterious impact on the protein function. Computational splicing tools suggest that this variant may not impact RNA splicing. To our knowledge, functional assays have not been performed for this variant nor has this variant been reported in individuals affected with cardiovascular disorders in the literature. This variant has been identified in 16/279974 chromosomes in the general population by the Genome Aggregation Database (gnomAD). 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;C1832931:Arrhythmogenic right ventricular dysplasia 2;C5542154:Ventricular arrhythmias due to cardiac ryanodine receptor calcium release deficiency syndrome Uncertain:1
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Cardiovascular phenotype Uncertain:1
The p.H3560Q variant (also known as c.10680T>A), located in coding exon 74 of the RYR2 gene, results from a T to A substitution at nucleotide position 10680. The histidine at codon 3560 is replaced by glutamine, an amino acid with highly similar properties. This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. 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