rs757009736
Variant summary
Our verdict is Likely benign. The variant received -3 ACMG points: 1P and 4B. PP3BS2
The NM_014000.3(VCL):c.1559G>A(p.Arg520Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000157 in 1,461,646 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. R520W) has been classified as Uncertain significance.
Frequency
Consequence
NM_014000.3 missense
Scores
Clinical Significance
Conservation
Publications
- dilated cardiomyopathy 1WInheritance: AD Classification: STRONG, MODERATE, LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
- dilated cardiomyopathyInheritance: AD Classification: MODERATE Submitted by: ClinGen
- familial isolated dilated cardiomyopathyInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- hypertrophic cardiomyopathy 15Inheritance: AD Classification: LIMITED Submitted by: PanelApp Australia, Ambry Genetics, Labcorp Genetics (formerly Invitae)
- hypertrophic cardiomyopathyInheritance: AD Classification: NO_KNOWN Submitted by: ClinGen
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ACMG classification
Our verdict: Likely_benign. The variant received -3 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD2 exomes AF: 0.00000795 AC: 2AN: 251450 AF XY: 0.0000147 show subpopulations
GnomAD4 exome AF: 0.0000157 AC: 23AN: 1461646Hom.: 0 Cov.: 31 AF XY: 0.0000151 AC XY: 11AN XY: 727120 show subpopulations
Age Distribution
GnomAD4 genome Cov.: 32
ClinVar
Submissions by phenotype
not specified Uncertain:1
- -
Sudden unexplained death Uncertain:1
The VCL Arg520Gln is absent in the large Exome Aggregation Consortium dataset (http://exac.broadinstitute.org/). Arginine (Arg) at position 520 is highly conserved across distantly related species, and computational prediction tools are supportive of a deleterious effect (SIFT "deleterious"; PolyPhen-2 "probably damaging"; MutationTaster "disease-causing"). We have identified this variant in 1 patient who had an unexplained resuscitated cardiac arrest event. The patient has no family history of a genetic heart condition or sudden cardiac death. Based on limited available information and rarity in the general population, we classify VCL Arg520Gln as a variant of "uncertain significance". -
Dilated cardiomyopathy 1W Uncertain:1
This sequence change replaces arginine, which is basic and polar, with glutamine, which is neutral and polar, at codon 520 of the VCL protein (p.Arg520Gln). This variant is present in population databases (rs757009736, gnomAD 0.006%). This missense change has been observed in individual(s) with hypertrophic cardiomyopathy (Invitae). ClinVar contains an entry for this variant (Variation ID: 222888). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Not Available"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Not Available"). 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. -
not provided Uncertain:1
- -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at