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

Genomes: not found (cov: 32)
Exomes 𝑓: 0.000012 ( 0 hom. )

Consequence

DSP
NM_004415.4 missense

Scores

2
17

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:1

Conservation

PhyloP100: 3.71

Publications

0 publications found
Variant links:
Genes affected
DSP (HGNC:3052): (desmoplakin) This gene encodes a protein that anchors intermediate filaments to desmosomal plaques and forms an obligate component of functional desmosomes. Mutations in this gene are the cause of several cardiomyopathies and keratodermas, including skin fragility-woolly hair syndrome. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2016]
DSP Gene-Disease associations (from GenCC):
  • arrhythmogenic right ventricular dysplasia 8
    Inheritance: AD, AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
  • keratosis palmoplantaris striata 2
    Inheritance: AD Classification: DEFINITIVE, STRONG, LIMITED Submitted by: G2P, Ambry Genetics, Genomics England PanelApp
  • skin fragility-woolly hair-palmoplantar keratoderma syndrome
    Inheritance: AD, AR Classification: DEFINITIVE, STRONG, SUPPORTIVE, LIMITED Submitted by: Orphanet, G2P, Genomics England PanelApp, Ambry Genetics
  • arrhythmogenic cardiomyopathy with wooly hair and keratoderma
    Inheritance: 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 agenesis
    Inheritance: AD Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp, Ambry Genetics
  • lethal acantholytic epidermolysis bullosa
    Inheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: PanelApp Australia, Ambry Genetics, Labcorp Genetics (formerly Invitae), Genomics England PanelApp, Orphanet
  • familial isolated dilated cardiomyopathy
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • striate palmoplantar keratoderma
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • severe dermatitis-multiple allergies-metabolic wasting syndrome
    Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
  • hypertrophic cardiomyopathy
    Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.06493592).
BP6
Variant 6-7582676-G-A is Benign according to our data. Variant chr6-7582676-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 387390.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
DSPNM_004415.4 linkc.5414G>A p.Cys1805Tyr missense_variant Exon 24 of 24 ENST00000379802.8 NP_004406.2 P15924-1B4DKX6
DSPNM_001319034.2 linkc.4085G>A p.Cys1362Tyr missense_variant Exon 24 of 24 NP_001305963.1 P15924-3B4DKX6
DSPNM_001008844.3 linkc.3617G>A p.Cys1206Tyr missense_variant Exon 24 of 24 NP_001008844.1 P15924-2B4DKX6Q4LE79

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
DSPENST00000379802.8 linkc.5414G>A p.Cys1805Tyr missense_variant Exon 24 of 24 1 NM_004415.4 ENSP00000369129.3 P15924-1

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD2 exomes
AF:
0.0000279
AC:
7
AN:
251024
AF XY:
0.0000369
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000116
AC:
17
AN:
1461586
Hom.:
0
Cov.:
31
AF XY:
0.0000193
AC XY:
14
AN XY:
727106
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33456
American (AMR)
AF:
0.00
AC:
0
AN:
44634
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26122
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39700
South Asian (SAS)
AF:
0.000186
AC:
16
AN:
86194
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53414
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5768
European-Non Finnish (NFE)
AF:
8.99e-7
AC:
1
AN:
1111924
Other (OTH)
AF:
0.00
AC:
0
AN:
60374
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.475
Heterozygous variant carriers
0
1
3
4
6
7
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
Cov.:
32
ExAC
AF:
0.0000330
AC:
4
Asia WGS
AF:
0.000866
AC:
3
AN:
3478

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:2Benign:1
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

Cardiomyopathy Uncertain:1
Jul 25, 2022
Color Diagnostics, LLC DBA Color Health
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

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
Jul 06, 2016
GeneDx
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

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
Dec 06, 2022
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.11
BayesDel_addAF
Benign
-0.31
T
BayesDel_noAF
Benign
-0.39
CADD
Benign
18
DANN
Benign
0.30
DEOGEN2
Benign
0.13
T;.
Eigen
Benign
-0.42
Eigen_PC
Benign
-0.18
FATHMM_MKL
Uncertain
0.87
D
LIST_S2
Benign
0.84
T;T
M_CAP
Benign
0.0058
T
MetaRNN
Benign
0.065
T;T
MetaSVM
Benign
-1.1
T
MutationAssessor
Benign
-0.51
N;.
PhyloP100
3.7
PrimateAI
Uncertain
0.64
T
PROVEAN
Benign
-1.1
N;N
REVEL
Benign
0.076
Sift
Benign
0.41
T;T
Sift4G
Benign
1.0
T;T
Polyphen
0.0
B;.
Vest4
0.19
MutPred
0.37
Gain of phosphorylation at C1805 (P = 0.0188);.;
MVP
0.24
MPC
0.37
ClinPred
0.071
T
GERP RS
5.2
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.1
Varity_R
0.12
gMVP
0.27
Mutation Taster
=69/31
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

Other links and lift over

dbSNP: rs768161038; hg19: chr6-7582909; COSMIC: COSV65795539; API