6-7571459-A-G

Position:

chr6-7571459-A-G

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 2P and 12B. PM1BP4_StrongBP6_Very_Strong

The NM_004415.4(DSP):c.1778A>G(p.Asn593Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000812 in 1,614,238 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00054 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00084 ( 0 hom. )

Consequence

DSP
NM_004415.4 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:20

Conservation

PhyloP100: 3.47

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 -10 ACMG points.

PM1

In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 3 uncertain in NM_004415.4

BP4

Computational evidence support a benign effect (MetaRNN=0.049773157).

BP6

Variant 6-7571459-A-G is Benign according to our data. Variant chr6-7571459-A-G is described in ClinVar as [Likely_benign]. Clinvar id is 44867.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr6-7571459-A-G is described in Lovd as [Benign]. Variant chr6-7571459-A-G is described in Lovd as [Likely_benign].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
DSP	NM_004415.4 linkuse as main transcript	c.1778A>G	p.Asn593Ser	missense_variant	14/24	ENST00000379802.8
DSP	NM_001319034.2 linkuse as main transcript	c.1778A>G	p.Asn593Ser	missense_variant	14/24
DSP	NM_001008844.3 linkuse as main transcript	c.1778A>G	p.Asn593Ser	missense_variant	14/24

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
DSP	ENST00000379802.8 linkuse as main transcript	c.1778A>G	p.Asn593Ser	missense_variant	14/24	1	NM_004415.4	P2	P15924-1
DSP	ENST00000418664.2 linkuse as main transcript	c.1778A>G	p.Asn593Ser	missense_variant	14/24	1		A2	P15924-2
DSP	ENST00000710359.1 linkuse as main transcript	c.1778A>G	p.Asn593Ser	missense_variant	14/24			A2
DSP	ENST00000684395.1 linkuse as main transcript	n.162A>G		non_coding_transcript_exon_variant	2/5

Frequencies

GnomAD3 genomes

AF:

0.000545

AC:

AN:

152230

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.000565

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000970

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000553

AC:

139

AN:

251294

Hom.:

AF XY:

0.000574

AC XY:

AN XY:

135808

show subpopulations

Gnomad AFR exome

AF:

0.000185

Gnomad AMR exome

AF:

0.0000867

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000277

Gnomad NFE exome

AF:

0.00110

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.000840

AC:

1228

AN:

1461890

Hom.:

Cov.:

AF XY:

0.000781

AC XY:

568

AN XY:

727244

show subpopulations

Gnomad4 AFR exome

AF:

0.000149

Gnomad4 AMR exome

AF:

0.0000894

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000348

Gnomad4 FIN exome

AF:

0.000337

Gnomad4 NFE exome

AF:

0.00105

Gnomad4 OTH exome

AF:

0.000414

GnomAD4 genome

AF:

0.000545

AC:

AN:

152348

Hom.:

Cov.:

AF XY:

0.000497

AC XY:

AN XY:

74496

show subpopulations

Gnomad4 AFR

AF:

0.000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.000565

Gnomad4 NFE

AF:

0.000970

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000957

Hom.:

Bravo

AF:

0.000461

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.00130

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.00128

AC:

ExAC

AF:

0.000511

AC:

EpiCase

AF:

0.000981

EpiControl

AF:

0.00136

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:20

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:7

Likely benign, criteria provided, single submitter	clinical testing	GeneDx	May 21, 2024	See Variant Classification Assertion Criteria. -
Likely benign, no assertion criteria provided	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	-	- -
Likely benign, no assertion criteria provided	clinical testing	Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+	-	- -
Likely benign, no assertion criteria provided	clinical testing	Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)	-	- -
Likely benign, criteria provided, single submitter	research	Biesecker Lab/Clinical Genomics Section, National Institutes of Health	Jun 24, 2013	- -
Likely benign, no assertion criteria provided	clinical testing	Genome Diagnostics Laboratory, University Medical Center Utrecht	-	- -
Likely benign, no assertion criteria provided	clinical testing	Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen	-	- -

not specified

Benign:3

Benign, criteria provided, single submitter	clinical testing	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	Aug 27, 2019	Variant summary: DSP c.1778A>G (p.Asn593Ser) results in a conservative amino acid change located in the Desmoplakin, spectrin-like domain of the encoded protein sequence. Four of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 0.00055 in 251294 control chromosomes, predominantly at a frequency of 0.0011 within the Non-Finnish European subpopulation in the gnomAD database. The observed variant frequency within Non-Finnish European control individuals in the gnomAD database is approximately 44 fold of the estimated maximal expected allele frequency for a pathogenic variant in DSP causing Cardiomyopathy phenotype (2.5e-05), strongly suggesting that the variant is a benign polymorphism found primarily in populations of Non-Finnish European origin. The variant, c.1778A>G, has been reported in the literature in individuals affected with Cardiomyopathy and ARVC and these affected individuals had co-occurrences with other pathogenic variants (DSG2 c.137G>A, p.Arg46Gln (Rasmussen, 22013); TTN c.49511delG, p.Gly16504GlufsX12 (Pugh_2014)), providing supporting evidence for a benign role. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Seven ClinVar submissions (evaluation after 2014) cite the variant four times as uncertain significance and three times as likely benign. Based on the evidence outlined above, the variant was classified as benign. -
Benign, no assertion criteria provided	clinical testing	Clinical Genetics, Academic Medical Center	-	- -
Benign, criteria provided, single submitter	clinical testing	Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	Mar 12, 2018	The p.Asn593Ser variant in exon 14 of DSP: This variant is not expected to have clinical significance because it has been identified in 0.1% (132/126514) of Eur opean chromosomes by the Genome Aggregation Database (gnomAD, http://gnomad.broa dinstitute.org; dbSNP rs34239595). In addition, it has been identified in severa l individuals who carried disease-causing variants in other genes (Rasmussen et al. 2013, LMM data) and computational prediction tools and conservation analysis suggest that this variant is unlikely to impact the protein. ACMG/AMP Criteria Applied: BA1; BP4; BP5. -

Arrhythmogenic right ventricular dysplasia 8

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Sep 30, 2019	This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. The evidence from the literature, in combination with allele frequency data from public databases where available, was sufficient to determine this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -
Likely benign, criteria provided, single submitter	clinical testing	Institute of Human Genetics, University of Leipzig Medical Center	Jan 01, 2019	- -

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

Jan 26, 2024

- -

Cardiomyopathy

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Color Diagnostics, LLC DBA Color Health

Dec 01, 2019

- -

Arrhythmogenic right ventricular cardiomyopathy

Benign:1

Likely benign, no assertion criteria provided

research

CSER _CC_NCGL, University of Washington

Aug 01, 2016

Found in patient having exome sequencing for an unrelated indication. No known history of arrhythmogenic right ventricular dysplasia. -

Lethal acantholytic epidermolysis bullosa

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Sep 30, 2019

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases allowed determination this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -

Woolly hair-skin fragility syndrome

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Sep 30, 2019

Primary familial hypertrophic cardiomyopathy

Benign:1

Likely benign, no assertion criteria provided

clinical testing

Blueprint Genetics

Sep 18, 2014

- -

Cardiovascular phenotype

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 17, 2021

This alteration is classified as likely 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. -

DSP-related disorder

Benign:1

Likely benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Mar 12, 2024

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.16

BayesDel_addAF

Benign

-0.48

BayesDel_noAF

Benign

-0.50

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.35

T;.

Eigen

Benign

-0.097

Eigen_PC

Benign

0.11

FATHMM_MKL

Uncertain

0.93

LIST_S2

Uncertain

0.89

D;D

M_CAP

Benign

0.013

MetaRNN

Benign

0.050

T;T

MetaSVM

Benign

-0.87

MutationAssessor

Benign

0.86

L;L

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.58

PROVEAN

Benign

-1.9

N;N

REVEL

Benign

0.13

Sift

Benign

0.11

T;T

Sift4G

Benign

0.62

T;T

Polyphen

0.012

B;.

Vest4

0.51

MVP

0.61

MPC

0.22

ClinPred

0.031

GERP RS

5.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.37

gMVP

0.26

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