6-7580799-C-T

Position:

chr6-7580799-C-T

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_004415.4(DSP):c.4609C>T(p.Arg1537Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0132 in 1,614,112 control chromosomes in the GnomAD database, including 189 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R1537H) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0090 ( 8 hom., cov: 32)

Exomes 𝑓: 0.014 ( 181 hom. )

Consequence

DSP
NM_004415.4 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:21

Conservation

PhyloP100: 2.08

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 Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.009360015).

BP6

Variant 6-7580799-C-T is Benign according to our data. Variant chr6-7580799-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 44917.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr6-7580799-C-T is described in Lovd as [Benign]. Variant chr6-7580799-C-T is described in Lovd as [Likely_benign].

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.00895 (1363/152284) while in subpopulation NFE AF= 0.0156 (1062/68026). AF 95% confidence interval is 0.0148. There are 8 homozygotes in gnomad4. There are 590 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 8 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
DSP	NM_004415.4 linkuse as main transcript	c.4609C>T	p.Arg1537Cys	missense_variant	23/24	ENST00000379802.8
DSP	NM_001008844.3 linkuse as main transcript	c.3582+1027C>T		intron_variant
DSP	NM_001319034.2 linkuse as main transcript	c.4050+559C>T		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
DSP	ENST00000379802.8 linkuse as main transcript	c.4609C>T	p.Arg1537Cys	missense_variant	23/24	1	NM_004415.4	P2	P15924-1
DSP	ENST00000418664.2 linkuse as main transcript	c.3582+1027C>T		intron_variant		1		A2	P15924-2
DSP	ENST00000710359.1 linkuse as main transcript	c.4050+559C>T		intron_variant				A2

Frequencies

GnomAD3 genomes

AF:

0.00895

AC:

1362

AN:

152166

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00355

Gnomad AMI

AF:

0.00548

Gnomad AMR

AF:

0.00589

Gnomad ASJ

AF:

0.000288

Gnomad EAS

AF:

0.000192

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00377

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0156

Gnomad OTH

AF:

0.00815

GnomAD3 exomes

AF:

0.00879

AC:

2201

AN:

250280

Hom.:

AF XY:

0.00858

AC XY:

1163

AN XY:

135526

show subpopulations

Gnomad AFR exome

AF:

0.00280

Gnomad AMR exome

AF:

0.00686

Gnomad ASJ exome

AF:

0.00140

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000621

Gnomad FIN exome

AF:

0.00448

Gnomad NFE exome

AF:

0.0152

Gnomad OTH exome

AF:

0.0128

GnomAD4 exome

AF:

0.0136

AC:

19943

AN:

1461828

Hom.:

181

Cov.:

AF XY:

0.0132

AC XY:

9629

AN XY:

727204

show subpopulations

Gnomad4 AFR exome

AF:

0.00212

Gnomad4 AMR exome

AF:

0.00740

Gnomad4 ASJ exome

AF:

0.00103

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.000707

Gnomad4 FIN exome

AF:

0.00395

Gnomad4 NFE exome

AF:

0.0167

Gnomad4 OTH exome

AF:

0.0116

GnomAD4 genome

AF:

0.00895

AC:

1363

AN:

152284

Hom.:

Cov.:

AF XY:

0.00792

AC XY:

590

AN XY:

74470

show subpopulations

Gnomad4 AFR

AF:

0.00354

Gnomad4 AMR

AF:

0.00589

Gnomad4 ASJ

AF:

0.000288

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00377

Gnomad4 NFE

AF:

0.0156

Gnomad4 OTH

AF:

0.00806

Alfa

AF:

0.0131

Hom.:

Bravo

AF:

0.00939

TwinsUK

AF:

0.0170

AC:

ALSPAC

AF:

0.0171

AC:

ESP6500AA

AF:

0.00295

AC:

ESP6500EA

AF:

0.0143

AC:

123

ExAC

AF:

0.00904

AC:

1098

Asia WGS

AF:

0.00173

AC:

AN:

3478

EpiCase

AF:

0.0129

EpiControl

AF:

0.0140

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:21

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:7

Benign, no assertion criteria provided	clinical testing	Clinical Genetics, Academic Medical Center	-	- -
Benign, criteria provided, single submitter	research	Biesecker Lab/Clinical Genomics Section, National Institutes of Health	Jun 24, 2013	- -
Benign, criteria provided, single submitter	clinical testing	Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	Sep 21, 2010	Arg1537Cys in exon 23 of DSP: This missense variant has been reported in the SN P database with a frequency of 5.6% (dbSNP; rs28763967). While we cannot exclude the possibility that this variant contributes to disease, its high frequency su ggests that it is more likely benign. -
Benign, no assertion criteria provided	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	-	- -
Benign, no assertion criteria provided	clinical testing	Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+	-	- -
Benign, no assertion criteria provided	clinical testing	Genome Diagnostics Laboratory, University Medical Center Utrecht	-	- -
Benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -

not provided

Benign:5

Likely benign, no assertion criteria provided	clinical testing	Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen	-	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Mar 03, 2015	This variant is associated with the following publications: (PMID: 33232181, 31402444, 27153395, 19863551, 25445213) -
Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	May 01, 2024	DSP: PM5, BS1, BS2 -
Likely benign, criteria provided, single submitter	clinical testing	Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics	Jan 03, 2017	- -
Benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Nov 27, 2023	- -

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

Benign:1

Benign, criteria provided, single submitter

clinical testing

Invitae

Feb 01, 2024

- -

Cardiomyopathy

Benign:1

Benign, criteria provided, single submitter

clinical testing

Color Diagnostics, LLC DBA Color Health

Mar 08, 2018

- -

Arrhythmogenic right ventricular cardiomyopathy;C0520806:Sudden unexplained death

Benign:1

Benign, criteria provided, single submitter

research

Agnes Ginges Centre for Molecular Cardiology, Centenary Institute

Mar 15, 2017

The DSP Arg1537Cys variant has a high frequency in the 1000 genomes project (MAF= 0.0036; http://www.1000genomes.org/), as well as the Exome Aggregation Consortium dataset (MAF= 0.0091; http://exac.broadinstitute.org/). Furthermore, although his variant was identified in a sudden death patient with ARVC/D on postmortem it did not segregate with disease in an affected ARVC family member. As a result we classify the DSP Arg1537Cys variant as "benign". -

Lethal acantholytic epidermolysis bullosa

Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Woolly hair-skin fragility syndrome

Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

Arrhythmogenic right ventricular dysplasia 8

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -

Cardiovascular phenotype

Benign:1

Benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 09, 2015

This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Arrhythmogenic right ventricular cardiomyopathy;C1142166:Brugada syndrome

Benign:1

Benign, criteria provided, single submitter

clinical testing

Center for Advanced Laboratory Medicine, UC San Diego Health, University of California San Diego

Feb 16, 2019

- -

Woolly hair-skin fragility syndrome;C1843896:Arrhythmogenic right ventricular dysplasia 8;C1852127:Keratosis palmoplantaris striata 2;C1854063:Arrhythmogenic cardiomyopathy with wooly hair and keratoderma;C1864826:Lethal acantholytic epidermolysis bullosa;C4014393:Cardiomyopathy, dilated, with wooly hair, keratoderma, and tooth agenesis

Benign:1

Benign, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Aug 09, 2021

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.18

BayesDel_addAF

Benign

-0.33

BayesDel_noAF

Benign

-0.23

CADD

Uncertain

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.53

Eigen

Uncertain

0.56

Eigen_PC

Uncertain

0.58

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.87

MetaRNN

Benign

0.0094

MetaSVM

Uncertain

-0.25

MutationAssessor

Benign

1.8

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.51

PROVEAN

Uncertain

-2.5

REVEL

Benign

0.28

Sift

Uncertain

0.0020

Sift4G

Uncertain

0.054

Polyphen

1.0

Vest4

0.48

MVP

0.59

MPC

0.30

ClinPred

0.0088

GERP RS

5.8

Varity_R

0.15

gMVP

0.22

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