chr6-7576338-G-A
Variant summary
Our verdict is Likely benign. Variant got -1 ACMG points: 0P and 1B. BP4
The NM_004415.4(DSP):c.2675G>A(p.Arg892His) variant causes a missense change. The variant allele was found at a frequency of 0.0000118 in 1,613,942 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_004415.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -1 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
DSP | NM_004415.4 | c.2675G>A | p.Arg892His | missense_variant | Exon 19 of 24 | ENST00000379802.8 | NP_004406.2 | |
DSP | NM_001319034.2 | c.2675G>A | p.Arg892His | missense_variant | Exon 19 of 24 | NP_001305963.1 | ||
DSP | NM_001008844.3 | c.2675G>A | p.Arg892His | missense_variant | Exon 19 of 24 | NP_001008844.1 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
DSP | ENST00000379802.8 | c.2675G>A | p.Arg892His | missense_variant | Exon 19 of 24 | 1 | NM_004415.4 | ENSP00000369129.3 | ||
DSP | ENST00000418664.2 | c.2675G>A | p.Arg892His | missense_variant | Exon 19 of 24 | 1 | ENSP00000396591.2 | |||
DSP | ENST00000710359.1 | c.2675G>A | p.Arg892His | missense_variant | Exon 19 of 24 | ENSP00000518230.1 |
Frequencies
GnomAD3 genomes AF: 0.0000131 AC: 2AN: 152138Hom.: 0 Cov.: 33
GnomAD3 exomes AF: 0.0000318 AC: 8AN: 251278Hom.: 0 AF XY: 0.0000221 AC XY: 3AN XY: 135802
GnomAD4 exome AF: 0.0000116 AC: 17AN: 1461804Hom.: 0 Cov.: 34 AF XY: 0.00000963 AC XY: 7AN XY: 727202
GnomAD4 genome AF: 0.0000131 AC: 2AN: 152138Hom.: 0 Cov.: 33 AF XY: 0.0000269 AC XY: 2AN XY: 74306
ClinVar
Submissions by phenotype
not specified Uncertain:1
Variant summary: DSP c.2675G>A (p.Arg892His) results in a non-conservative amino acid change located in the Spectrin/alpha-actinin repeat domain (IPR018159) of the encoded protein sequence. Three of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 3.2e-05 in 251278 control chromosomes. The observed variant frequency within Latino/Admixed American and Non-Finnish European control individuals in the gnomAD database is approximately 2.32-fold (5.8e-05) and 2.12-fold (5.3e-05) higher, respectively, than the estimated maximal expected allele frequency for a pathogenic variant in DSP causing a Cardiomyopathy phenotype (2.5e-05), suggesting that the variant is may be a benign polymorphism found primarily in populations of Latino/Admixed American and Non-Finnish European origin. However, the total number of occurrence is relatively small. The variant, c.2675G>A, has been reported in the literature in an individual diagnosed with Brugada Syndrome (Quenin_2017). However, this report does not provide unequivocal conclusions about association of the variant with Cardiomyopathy. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Three clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014, and all laboratories classified the variant as uncertain significance. Based on the evidence outlined above, the variant was classified as uncertain significance. -
Cardiomyopathy Uncertain:1
This missense variant replaces arginine with histidine at codon 892 of the DSP protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, 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 8/251278 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. -
not provided Uncertain:1
Has not been previously published as pathogenic or benign to our knowledge; Reported in ClinVar as a variant of uncertain significance (ClinVar Variant ID# 566173; Landrum et al., 2016); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function -
Cardiovascular phenotype Uncertain:1
The p.R892H variant (also known as c.2675G>A), located in coding exon 19 of the DSP gene, results from a G to A substitution at nucleotide position 2675. The arginine at codon 892 is replaced by histidine, an amino acid with highly similar properties. This alteration has been reported in a sudden death cohort (Quenin P et al. Circ Arrhythm Electrophysiol, 2017 Sep;10:). This amino acid position is well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Based on the available evidence, the clinical significance of this alteration remains unclear. -
Arrhythmogenic right ventricular dysplasia 8;C1854063:Arrhythmogenic cardiomyopathy with wooly hair and keratoderma Benign:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at