chr6-7578483-G-A

Position:

chr6-7578483-G-A

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 0P and 1B. BP4

The NM_004415.4(DSP):c.3005G>A(p.Arg1002Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000217 in 1,613,076 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts 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. R1002W) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000021 ( 0 hom. )

Consequence

DSP
NM_004415.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:1

Conservation

PhyloP100: 7.51

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 Likely_benign. Variant got -1 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.31185368).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
DSP	NM_004415.4 linkuse as main transcript	c.3005G>A	p.Arg1002Gln	missense_variant	22/24	ENST00000379802.8	NP_004406.2
DSP	NM_001319034.2 linkuse as main transcript	c.3005G>A	p.Arg1002Gln	missense_variant	22/24		NP_001305963.1
DSP	NM_001008844.3 linkuse as main transcript	c.3005G>A	p.Arg1002Gln	missense_variant	22/24		NP_001008844.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DSP	ENST00000379802.8 linkuse as main transcript	c.3005G>A	p.Arg1002Gln	missense_variant	22/24	1	NM_004415.4	ENSP00000369129	P2	P15924-1
DSP	ENST00000418664.2 linkuse as main transcript	c.3005G>A	p.Arg1002Gln	missense_variant	22/24	1		ENSP00000396591	A2	P15924-2
DSP	ENST00000710359.1 linkuse as main transcript	c.3005G>A	p.Arg1002Gln	missense_variant	22/24			ENSP00000518230	A2

Frequencies

GnomAD3 genomes

AF:

0.0000330

AC:

AN:

151660

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000970

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000438

AC:

AN:

251276

Hom.:

AF XY:

0.0000368

AC XY:

AN XY:

135810

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000792

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000205

AC:

AN:

1461416

Hom.:

Cov.:

AF XY:

0.0000234

AC XY:

AN XY:

727056

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000505

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.0000187

Gnomad4 NFE exome

AF:

0.0000189

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000330

AC:

AN:

151660

Hom.:

Cov.:

AF XY:

0.0000270

AC XY:

AN XY:

74000

show subpopulations

Gnomad4 AFR

AF:

0.0000970

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:

0.0000147

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000340

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000741

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:3Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

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

Dec 15, 2023

This missense variant replaces arginine with glutamine at codon 1002 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 12/282626 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 12, 2022

Cardiovascular phenotype

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 01, 2023

The p.R1002Q variant (also known as c.3005G>A), located in coding exon 22 of the DSP gene, results from a G to A substitution at nucleotide position 3005. The arginine at codon 1002 is replaced by glutamine, an amino acid with highly similar properties. This alteration was reported in an individual with dilated cardiomyopathy (DCM) who also had variants in other cardiac-related genes (Pugh TJ et al. Genet Med, 2014 Aug;16:601-8). This amino acid position is well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

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

Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Aug 06, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.16

BayesDel_noAF

Benign

-0.28

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.74

D;.

Eigen

Benign

0.066

Eigen_PC

Uncertain

0.26

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.90

D;D

M_CAP

Benign

0.010

MetaRNN

Benign

0.31

T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.7

L;L

MutationTaster

Benign

1.0

D;D

PrimateAI

Benign

0.32

PROVEAN

Uncertain

-2.8

D;N

REVEL

Benign

0.19

Sift

Benign

0.036

D;T

Sift4G

Benign

0.23

T;T

Polyphen

0.17

B;.

Vest4

0.81

MVP

0.54

MPC

0.87

ClinPred

0.33

GERP RS

5.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.32

gMVP

0.52

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.090

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