rs144850908

Positions:

chr6-7585786-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 0P and 0B.

The ENST00000379802.8(DSP):c.8524C>T(p.Arg2842Cys) variant causes a missense change. The variant allele was found at a frequency of 0.0000441 in 1,609,658 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. R2842H) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000044 ( 0 hom. )

Consequence

DSP
ENST00000379802.8 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:4B:1

Conservation

PhyloP100: 5.82

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
DSP	NM_004415.4 linkuse as main transcript	c.8524C>T	p.Arg2842Cys	missense_variant	24/24	ENST00000379802.8	NP_004406.2
DSP	NM_001319034.2 linkuse as main transcript	c.7195C>T	p.Arg2399Cys	missense_variant	24/24		NP_001305963.1
DSP	NM_001008844.3 linkuse as main transcript	c.6727C>T	p.Arg2243Cys	missense_variant	24/24		NP_001008844.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DSP	ENST00000379802.8 linkuse as main transcript	c.8524C>T	p.Arg2842Cys	missense_variant	24/24	1	NM_004415.4	ENSP00000369129	P2	P15924-1
DSP	ENST00000418664.2 linkuse as main transcript	c.6727C>T	p.Arg2243Cys	missense_variant	24/24	1		ENSP00000396591	A2	P15924-2
DSP	ENST00000710359.1 linkuse as main transcript	c.7195C>T	p.Arg2399Cys	missense_variant	24/24			ENSP00000518230	A2

Frequencies

GnomAD3 genomes

AF:

0.0000460

AC:

AN:

152168

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000103

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000816

AC:

AN:

245030

Hom.:

AF XY:

0.00000753

AC XY:

AN XY:

132724

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 SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000180

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000439

AC:

AN:

1457372

Hom.:

Cov.:

AF XY:

0.0000400

AC XY:

AN XY:

724944

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000117

Gnomad4 FIN exome

AF:

0.0000188

Gnomad4 NFE exome

AF:

0.0000522

Gnomad4 OTH exome

AF:

0.0000499

GnomAD4 genome

AF:

0.0000460

AC:

AN:

152286

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74478

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000103

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000135

Hom.:

Bravo

AF:

0.0000453

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

Asia WGS

AF:

0.00144

AC:

AN:

3478

EpiCase

AF:

0.000109

EpiControl

AF:

0.0000593

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:4Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Brugada syndrome 1

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Petrovsky National Research Centre of Surgery, The Federal Agency for Scientific Organizations

Jun 18, 2024

Heterozygous variant NM_004415:c.8524C>T (p.Arg2842Cys) in the DSP gene was found on WES data in female proband (31 y.o., Caucasian) with Drug-induced Brugada pattern on ECG and premature ventricular contraction. Additional rare candidate variant NM_001038:c.1486G>A (p.Val496Met) (Class III of pathogenicity) in the SCNN1A gene was found in this proband. The NM_004415:c.8524C>T (p.Arg2842Cys) variant is in The Genome Aggregation Database (gnomAD) v4.1.0 with total MAF 0.00004411 (Date of access 17-06-2024). Clinvar contains an entry for this variant (Variation ID: 405238). This variant has been reported in 3 studies in patients with variable phenotypes (PMID: 25351510‚ 31568572‚ 31983221). Most in silico predictors are inconclusive in the results (varsome.com). In accordance with ACMG(2015) criteria this variant is classified as Variant of Uncertain Significance (VUS) with following criteria selected: PM2. -

Arrhythmogenic cardiomyopathy with wooly hair and keratoderma

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

All of Us Research Program, National Institutes of Health

Jun 11, 2024

This missense variant replaces arginine with cysteine at codon 2842 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 been reported in an individual affected with dilated cardiomyopathy (PMID: 31983221) and in two individuals affected with hypertrophic cardiomyopathy (PMID: 25351510, 31568572). This variant has also been identified in 4/276380 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. -

Cardiomyopathy

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Color Diagnostics, LLC DBA Color Health

Dec 05, 2023

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Apr 28, 2022

Identified in patients with cardiomyopathy in the published literature (Lopes et al., 2015; Kuhnisch et al., 2019; Mazzarotto et al., 2020); at least one patient also harbored a pathogenic variant in the MYBPC3 gene; Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 31568572, 31983221, 25351510) -

Arrhythmogenic right ventricular dysplasia 8;C1854063:Arrhythmogenic cardiomyopathy with wooly hair and keratoderma

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 11, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.40

BayesDel_addAF

Pathogenic

0.31

BayesDel_noAF

Pathogenic

0.20

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.61

D;.

Eigen

Uncertain

0.65

Eigen_PC

Uncertain

0.65

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.97

D;D

M_CAP

Uncertain

0.12

MetaRNN

Uncertain

0.50

D;D

MetaSVM

Uncertain

-0.011

MutationAssessor

Uncertain

2.3

M;.

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.73

PROVEAN

Uncertain

-4.2

D;D

REVEL

Uncertain

0.44

Sift

Pathogenic

0.0

D;D

Sift4G

Uncertain

0.0020

D;D

Polyphen

1.0

D;.

Vest4

0.55

MVP

0.85

MPC

0.52

ClinPred

0.99

GERP RS

5.0

Varity_R

0.58

gMVP

0.57

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over