rs755391572
Variant summary
Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BP4_ModerateBP6BP7BS2
The NM_001035.3(RYR2):c.4044G>A(p.Lys1348Lys) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000905 in 1,613,786 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).
Frequency
Consequence
NM_001035.3 synonymous
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: Benign. The variant received -8 ACMG points.
Transcripts
RefSeq
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| RYR2 | ENST00000366574.7 | c.4044G>A | p.Lys1348Lys | synonymous_variant | Exon 31 of 105 | 1 | NM_001035.3 | ENSP00000355533.2 | ||
| RYR2 | ENST00000661330.2 | c.4044G>A | p.Lys1348Lys | synonymous_variant | Exon 31 of 106 | ENSP00000499393.2 | ||||
| RYR2 | ENST00000609119.2 | n.4044G>A | non_coding_transcript_exon_variant | Exon 31 of 104 | 5 | ENSP00000499659.2 |
Frequencies
GnomAD3 genomes AF: 0.0000920 AC: 14AN: 152112Hom.: 0 Cov.: 31 show subpopulations
GnomAD2 exomes AF: 0.000161 AC: 40AN: 248798 AF XY: 0.000193 show subpopulations
GnomAD4 exome AF: 0.0000903 AC: 132AN: 1461674Hom.: 0 Cov.: 31 AF XY: 0.0000935 AC XY: 68AN XY: 727118 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.0000920 AC: 14AN: 152112Hom.: 0 Cov.: 31 AF XY: 0.0000942 AC XY: 7AN XY: 74318 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
Catecholaminergic polymorphic ventricular tachycardia 1 Uncertain:1Benign:1
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This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -
not provided Benign:2
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RYR2: BP4, BS1 -
Arrhythmogenic right ventricular dysplasia 2 Uncertain:1
This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -
not specified Benign:1
Variant summary: RYR2 c.4044G>A alters a conserved nucleotide resulting in a synonymous change. 5/5 computational tools predict no significant impact on normal splicing. However, these predictions have yet to be confirmed by functional studies. The variant allele was found at a frequency of 0.00015 in 280186 control chromosomes, predominantly at a frequency of 0.0037 within the Ashkenazi Jewish subpopulation in the gnomAD database. The observed variant frequency within Ashkenazi Jewish control individuals in the gnomAD database is approximately 61 fold of the estimated maximal expected allele frequency for a pathogenic variant in RYR2 causing Arrhythmia phenotype (6e-05), strongly suggesting that the variant is a benign polymorphism found primarily in populations of Ashkenazi Jewish origin. To our knowledge, no occurrence of c.4044G>A in individuals affected with Arrhythmia and no experimental evidence demonstrating its impact on protein function have been reported. Four clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation (1x VUS, 3x likely benign). Based on the evidence outlined above, the variant was classified as benign. -
Catecholaminergic polymorphic ventricular tachycardia Benign:1
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Cardiomyopathy Benign:1
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RYR2-related disorder Benign:1
This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -
Cardiovascular phenotype Benign:1
This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at