rs768161038
Variant summary
Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_StrongBP6
The NM_004415.4(DSP):c.5414G>A(p.Cys1805Tyr) variant causes a missense change. The variant allele was found at a frequency of 0.0000116 in 1,461,586 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. C1805R) has been classified as Uncertain significance.
Frequency
Consequence
NM_004415.4 missense
Scores
Clinical Significance
Conservation
Publications
- arrhythmogenic right ventricular dysplasia 8Inheritance: AD, AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
- keratosis palmoplantaris striata 2Inheritance: AD Classification: DEFINITIVE, STRONG, LIMITED Submitted by: G2P, Ambry Genetics, Genomics England PanelApp
- skin fragility-woolly hair-palmoplantar keratoderma syndromeInheritance: AD, AR Classification: DEFINITIVE, STRONG, SUPPORTIVE, LIMITED Submitted by: Orphanet, G2P, Genomics England PanelApp, Ambry Genetics
- arrhythmogenic cardiomyopathy with wooly hair and keratodermaInheritance: AR, AD Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), G2P, Genomics England PanelApp, ClinGen, Orphanet, Ambry Genetics
- cardiomyopathy, dilated, with wooly hair, keratoderma, and tooth agenesisInheritance: AD Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp, Ambry Genetics
- lethal acantholytic epidermolysis bullosaInheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: PanelApp Australia, Ambry Genetics, Labcorp Genetics (formerly Invitae), Genomics England PanelApp, Orphanet
- familial isolated dilated cardiomyopathyInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- striate palmoplantar keratodermaInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- severe dermatitis-multiple allergies-metabolic wasting syndromeInheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
- hypertrophic cardiomyopathyInheritance: AD Classification: NO_KNOWN Submitted by: ClinGen
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ACMG classification
Our verdict: Likely_benign. The variant received -5 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| DSP | NM_004415.4 | c.5414G>A | p.Cys1805Tyr | missense_variant | Exon 24 of 24 | ENST00000379802.8 | NP_004406.2 | |
| DSP | NM_001319034.2 | c.4085G>A | p.Cys1362Tyr | missense_variant | Exon 24 of 24 | NP_001305963.1 | ||
| DSP | NM_001008844.3 | c.3617G>A | p.Cys1206Tyr | missense_variant | Exon 24 of 24 | NP_001008844.1 |
Ensembl
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD2 exomes AF: 0.0000279 AC: 7AN: 251024 AF XY: 0.0000369 show subpopulations
GnomAD4 exome AF: 0.0000116 AC: 17AN: 1461586Hom.: 0 Cov.: 31 AF XY: 0.0000193 AC XY: 14AN XY: 727106 show subpopulations
Age Distribution
GnomAD4 genome Cov.: 32
ClinVar
Submissions by phenotype
Cardiomyopathy Uncertain:1
This missense variant replaces cysteine with tyrosine at codon 1805 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 7/251024 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
A variant of uncertain significance has been identified in the DSP gene. The C1805Y variant has not been published as a pathogenic variant, nor has it been reported as a benign variant to our knowledge. The C1805Y variant was not observed in approximately 6500 individuals of European and African American ancestry in the NHLBI Exome Sequencing Project, indicating it is not a common benign variant in these populations. The C1805Y variant is a non-conservative amino acid substitution, which is likely to impact secondary protein structure as these residues differ in polarity, charge, size and/or other properties. Nevertheless, this substitution occurs at a position that is only conserved in mammals where Tyrosine is typical for multiple other species. In silico analysis is inconsistent in its predictions as to whether or not the variant is damaging to the protein structure/function.Therefore, based on the currently available information, it is unclear whether this variant is pathogenic or rare benign. -
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