chr6-7565494-A-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -18 ACMG points: 2P and 20B. PM1BP4_StrongBP6_Very_StrongBS1BS2

The NM_004415.4(DSP):c.913A>T(p.Ile305Phe) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0366 in 1,613,890 control chromosomes in the GnomAD database, including 1,250 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. I305V) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.027 ( 93 hom., cov: 31)

Exomes 𝑓: 0.038 ( 1157 hom. )

Consequence

DSP
NM_004415.4 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:23

Conservation

PhyloP100: 9.20

Publications

21 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

DSP links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -18 ACMG points.

PM1

In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 21 uncertain in NM_004415.4

BP4

Computational evidence support a benign effect (MetaRNN=0.0029249191).

BP6

Variant 6-7565494-A-T is Benign according to our data. Variant chr6-7565494-A-T is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 36026.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.0269 (4099/152148) while in subpopulation NFE AF = 0.0408 (2771/67978). AF 95% confidence interval is 0.0395. There are 93 homozygotes in GnomAd4. There are 1921 alleles in the male GnomAd4 subpopulation. Median coverage is 31. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 93 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DSP	NM_004415.4 link	c.913A>T	p.Ile305Phe	missense_variant	Exon 7 of 24	ENST00000379802.8	NP_004406.2	P15924-1B4DKX6
DSP	NM_001319034.2 link	c.913A>T	p.Ile305Phe	missense_variant	Exon 7 of 24		NP_001305963.1	P15924-3B4DKX6
DSP	NM_001008844.3 link	c.913A>T	p.Ile305Phe	missense_variant	Exon 7 of 24		NP_001008844.1	P15924-2B4DKX6Q4LE79
DSP	NM_001406591.1 link	c.913A>T	p.Ile305Phe	missense_variant	Exon 7 of 11		NP_001393520.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DSP	ENST00000379802.8 link	c.913A>T	p.Ile305Phe	missense_variant	Exon 7 of 24	1	NM_004415.4	ENSP00000369129.3		P15924-1

Frequencies

GnomAD3 genomes

AF:

0.0270

AC:

4098

AN:

152030

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00604

Gnomad AMI

AF:

0.167

Gnomad AMR

AF:

0.0190

Gnomad ASJ

AF:

0.0467

Gnomad EAS

AF:

0.000578

Gnomad SAS

AF:

0.0384

Gnomad FIN

AF:

0.0212

Gnomad MID

AF:

0.0506

Gnomad NFE

AF:

0.0408

Gnomad OTH

AF:

0.0210

GnomAD2 exomes

AF:

0.0296

AC:

7436

AN:

251262

AF XY:

0.0315

show subpopulations

Gnomad AFR exome

AF:

0.00652

Gnomad AMR exome

AF:

0.0153

Gnomad ASJ exome

AF:

0.0447

Gnomad EAS exome

AF:

0.000272

Gnomad FIN exome

AF:

0.0245

Gnomad NFE exome

AF:

0.0396

Gnomad OTH exome

AF:

0.0342

GnomAD4 exome

AF:

0.0376

AC:

54918

AN:

1461742

Hom.:

1157

Cov.:

AF XY:

0.0378

AC XY:

27494

AN XY:

727180

show subpopulations

African (AFR)

AF:

0.00568

AC:

190

AN:

33476

American (AMR)

AF:

0.0157

AC:

702

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.0453

AC:

1183

AN:

26132

East Asian (EAS)

AF:

0.000151

AC:

AN:

39700

South Asian (SAS)

AF:

0.0373

AC:

3214

AN:

86258

European-Finnish (FIN)

AF:

0.0248

AC:

1324

AN:

53410

Middle Eastern (MID)

AF:

0.0304

AC:

175

AN:

5764

European-Non Finnish (NFE)

AF:

0.0414

AC:

46062

AN:

1111894

Other (OTH)

AF:

0.0341

AC:

2062

AN:

60388

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.481

Heterozygous variant carriers

3299

6598

9897

13196

16495

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

1740

3480

5220

6960

8700

<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

AF:

0.0269

AC:

4099

AN:

152148

Hom.:

Cov.:

AF XY:

0.0258

AC XY:

1921

AN XY:

74386

show subpopulations

African (AFR)

AF:

0.00602

AC:

250

AN:

41514

American (AMR)

AF:

0.0190

AC:

290

AN:

15278

Ashkenazi Jewish (ASJ)

AF:

0.0467

AC:

162

AN:

3470

East Asian (EAS)

AF:

0.000580

AC:

AN:

5176

South Asian (SAS)

AF:

0.0393

AC:

189

AN:

4810

European-Finnish (FIN)

AF:

0.0212

AC:

225

AN:

10600

Middle Eastern (MID)

AF:

0.0476

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0408

AC:

2771

AN:

67978

Other (OTH)

AF:

0.0203

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

Heterozygous variant carriers

200

401

601

802

1002

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

144

192

240

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.0354

Hom.:

Bravo

AF:

0.0256

TwinsUK

AF:

0.0445

AC:

165

ALSPAC

AF:

0.0464

AC:

179

ESP6500AA

AF:

0.00590

AC:

ESP6500EA

AF:

0.0419

AC:

360

ExAC

AF:

0.0299

AC:

3632

Asia WGS

AF:

0.0100

AC:

AN:

3478

EpiCase

AF:

0.0417

EpiControl

AF:

0.0411

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:23

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:10

Oct 12, 2011

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Ile305Phe in exon 7 of DSP: This variant is classified as benign based on its hi gh frequency in the general population (rs17604693, MAF >3%). -

Jan 14, 2015

Blueprint Genetics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Jun 24, 2013

Biesecker Lab/Clinical Genomics Section, National Institutes of Health

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:research

- -

Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

PreventionGenetics, part of Exact Sciences

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Clinical Genetics, Academic Medical Center

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Feb 17, 2025

Molecular Diagnostic Laboratory for Inherited Cardiovascular Disease, Montreal Heart Institute

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Genome Diagnostics Laboratory, University Medical Center Utrecht

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Cardiomyopathy

Benign:4

Apr 03, 2019

CHEO Genetics Diagnostic Laboratory, Children's Hospital of Eastern Ontario

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Jan 13, 2012

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Mar 07, 2018

Color Diagnostics, LLC DBA Color Health

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Sep 23, 2022

Cohesion Phenomics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Benign:3

Nov 20, 2024

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Feb 10, 2021

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is associated with the following publications: (PMID: 33232181, 27153395, 19863551, 25445213) -

Breakthrough Genomics, Breakthrough Genomics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

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

Benign:1

Feb 03, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Arrhythmogenic right ventricular cardiomyopathy

Benign:1

Feb 19, 2015

Genomic Diagnostic Laboratory, Division of Genomic Diagnostics, Children's Hospital of Philadelphia

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Lethal acantholytic epidermolysis bullosa

Benign:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

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

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Arrhythmogenic right ventricular dysplasia 8

Benign:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

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

Jun 23, 2015

Ambry Genetics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.60

BayesDel_addAF

Benign

-0.20

BayesDel_noAF

Uncertain

-0.020

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Pathogenic

0.82

D;.

Eigen

Pathogenic

0.80

Eigen_PC

Pathogenic

0.79

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.91

D;D

MetaRNN

Benign

0.0029

T;T

MetaSVM

Pathogenic

0.91

MutationAssessor

Uncertain

2.4

M;M

PhyloP100

9.2

PrimateAI

Uncertain

0.61

PROVEAN

Benign

-2.2

N;N

REVEL

Uncertain

0.59

Sift

Uncertain

0.0020

D;D

Sift4G

Uncertain

0.031

D;T

Polyphen

1.0

D;.

Vest4

0.29

MPC

1.0

ClinPred

0.027

GERP RS

5.5

Varity_R

0.40

gMVP

0.72

Mutation Taster

=81/19

polymorphism (auto)

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over