6-7566398-G-C

Position:

chr6-7566398-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM1BP4_Moderate

The NM_004415.4(DSP):c.961G>C(p.Val321Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000254 in 1,613,656 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00016 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000011 ( 0 hom. )

Consequence

DSP
NM_004415.4 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 2.65

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.

PM1

In a repeat Spectrin 2 (size 103) in uniprot entity DESP_HUMAN there are 6 pathogenic changes around while only 1 benign (86%) in NM_004415.4

BP4

Computational evidence support a benign effect (MetaRNN=0.07939237).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
DSP	NM_004415.4 linkuse as main transcript	c.961G>C	p.Val321Leu	missense_variant	8/24	ENST00000379802.8	NP_004406.2
DSP	NM_001319034.2 linkuse as main transcript	c.961G>C	p.Val321Leu	missense_variant	8/24		NP_001305963.1
DSP	NM_001008844.3 linkuse as main transcript	c.961G>C	p.Val321Leu	missense_variant	8/24		NP_001008844.1
DSP	NM_001406591.1 linkuse as main transcript	c.961G>C	p.Val321Leu	missense_variant	8/11		NP_001393520.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DSP	ENST00000379802.8 linkuse as main transcript	c.961G>C	p.Val321Leu	missense_variant	8/24	1	NM_004415.4	ENSP00000369129	P2	P15924-1
DSP	ENST00000418664.2 linkuse as main transcript	c.961G>C	p.Val321Leu	missense_variant	8/24	1		ENSP00000396591	A2	P15924-2
DSP	ENST00000710359.1 linkuse as main transcript	c.961G>C	p.Val321Leu	missense_variant	8/24			ENSP00000518230	A2
DSP	ENST00000682228.1 linkuse as main transcript	n.285G>C		non_coding_transcript_exon_variant	2/3

Frequencies

GnomAD3 genomes

AF:

0.000164

AC:

AN:

152072

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000580

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000159

AC:

AN:

250872

Hom.:

AF XY:

0.0000221

AC XY:

AN XY:

135636

show subpopulations

Gnomad AFR exome

AF:

0.000246

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000109

AC:

AN:

1461466

Hom.:

Cov.:

AF XY:

0.0000124

AC XY:

AN XY:

727046

show subpopulations

Gnomad4 AFR exome

AF:

0.000448

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.000164

AC:

AN:

152190

Hom.:

Cov.:

AF XY:

0.000148

AC XY:

AN XY:

74410

show subpopulations

Gnomad4 AFR

AF:

0.000578

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000282

Hom.:

Bravo

AF:

0.000110

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000247

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:4Benign: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

Feb 05, 2024

This missense variant replaces valine with leucine at codon 321 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 DSP-related disorders in the literature. This variant has been identified in 10/282232 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

Feb 06, 2023

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Apr 26, 2021

Has not been previously published as pathogenic or benign to our knowledge; Reported in ClinVar as a variant of uncertain significance (ClinVar Variant ID# 391896; Landrum et al., 2016); In silico analysis supports that this missense variant does not alter protein structure/function -

Cardiovascular phenotype

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 11, 2023

The p.V321L variant (also known as c.961G>C), located in coding exon 8 of the DSP gene, results from a G to C substitution at nucleotide position 961. The valine at codon 321 is replaced by leucine, an amino acid with highly similar properties. 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

Oct 18, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.32

CADD

Benign

DANN

Benign

0.89

DEOGEN2

Benign

0.15

T;.

Eigen

Benign

-0.35

Eigen_PC

Benign

-0.10

FATHMM_MKL

Uncertain

0.96

LIST_S2

Benign

0.85

D;D

M_CAP

Benign

0.0046

MetaRNN

Benign

0.079

T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.39

N;N

MutationTaster

Benign

0.95

D;D

PrimateAI

Uncertain

0.62

PROVEAN

Benign

-0.090

N;N

REVEL

Benign

0.058

Sift

Benign

0.91

T;T

Sift4G

Benign

0.92

T;T

Polyphen

0.0010

B;.

Vest4

0.24

MVP

0.49

MPC

0.21

ClinPred

0.11

GERP RS

4.5

Varity_R

0.13

gMVP

0.28

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