NM_004415.4:c.8415C>T

Variant names:

Variant summary

Our verdict is Benign. Variant got -17 ACMG points: 0P and 17B. BP4_StrongBP6_Very_StrongBP7BS1

The NM_004415.4(DSP):c.8415C>T(p.Ala2805Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000359 in 1,614,074 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 Likely benign (★★).

Frequency

Genomes: 𝑓 0.00016 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000023 ( 0 hom. )

Consequence

DSP
NM_004415.4 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:10

Conservation

PhyloP100: -4.00

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 -17 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.62).

BP6

Variant 6-7585677-C-T is Benign according to our data. Variant chr6-7585677-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 163290.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr6-7585677-C-T is described in Lovd as [Likely_benign]. Variant chr6-7585677-C-T is described in Lovd as [Benign].

BP7

Synonymous conserved (PhyloP=-4 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. gnomad4_exome allele frequency = 0.0000226 (33/1461884) while in subpopulation AFR AF= 0.000806 (27/33480). AF 95% confidence interval is 0.000569. There are 0 homozygotes in gnomad4_exome. There are 16 alleles in male gnomad4_exome subpopulation. Median coverage is 38. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DSP	NM_004415.4 link	c.8415C>T	p.Ala2805Ala	synonymous_variant	Exon 24 of 24	ENST00000379802.8	NP_004406.2	P15924-1B4DKX6
DSP	NM_001319034.2 link	c.7086C>T	p.Ala2362Ala	synonymous_variant	Exon 24 of 24		NP_001305963.1	P15924-3B4DKX6
DSP	NM_001008844.3 link	c.6618C>T	p.Ala2206Ala	synonymous_variant	Exon 24 of 24		NP_001008844.1	P15924-2B4DKX6Q4LE79

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
DSP	ENST00000379802.8 link	c.8415C>T	p.Ala2805Ala	synonymous_variant	Exon 24 of 24	1	NM_004415.4	ENSP00000369129.3	P15924-1
DSP	ENST00000418664.2 link	c.6618C>T	p.Ala2206Ala	synonymous_variant	Exon 24 of 24	1		ENSP00000396591.2	P15924-2
DSP	ENST00000710359.1 link	c.7086C>T	p.Ala2362Ala	synonymous_variant	Exon 24 of 24			ENSP00000518230.1

Frequencies

GnomAD3 genomes

AF:

0.000164

AC:

AN:

152190

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000579

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.000288

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:

0.0000478

AC:

AN:

251058

Hom.:

AF XY:

0.0000221

AC XY:

AN XY:

135786

show subpopulations

Gnomad AFR exome

AF:

0.000741

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:

0.0000226

AC:

AN:

1461884

Hom.:

Cov.:

AF XY:

0.0000220

AC XY:

AN XY:

727240

show subpopulations

Gnomad4 AFR exome

AF:

0.000806

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.0000383

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

8.99e-7

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.000164

AC:

AN:

152190

Hom.:

Cov.:

AF XY:

0.000229

AC XY:

AN XY:

74356

show subpopulations

Gnomad4 AFR

AF:

0.000579

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.000288

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:

0.000329

Hom.:

Bravo

AF:

0.000253

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:10

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:3

Feb 17, 2025

Molecular Diagnostic Laboratory for Inherited Cardiovascular Disease, Montreal Heart Institute

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jul 23, 2014

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Ala2805Ala in exon 24 of DSP: This variant is not expected to have clinical sign ificance because it does not alter an amino acid residue and is not located with in the splice consensus sequence. It has been identified in 1/4406 African Ameri can chromosomes by the NHLBI Exome Sequencing Project (http://evs.gs.washington. edu/EVS/). Ala2805Ala in exon 24 of DSP (allele frequency = 1/4406) ** -

Apr 22, 2019

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

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: DSP c.8415C>T alters a non-conserved nucleotide resulting in a synonymous change. 5/5 computational tools predict no significant impact on normal splicing. However, these predictions have yet to be confirmed by functional studies. The variant allele was found at a frequency of 4.8e-05 in 251058 control chromosomes, predominantly at a frequency of 0.00076 within the African or African-American subpopulation in the gnomAD database. The observed variant frequency within African or African-American control individuals in the gnomAD database is approximately 76 fold of the estimated maximal expected allele frequency for a pathogenic variant in DSP causing Arrhythmia phenotype (1e-05), strongly suggesting that the variant is a benign polymorphism found primarily in populations of African or African-American origin. The variant is cited in a publication, Patel_2014, with no additional information. Two ClinVar submissions from clinical diagnostic laboratories (evaluation after 2014) cites the variant as likely benign. Based on the evidence outlined above, the variant was classified as benign. -

not provided

Benign:3

May 23, 2018

GeneDx

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Mar 01, 2025

CeGaT Center for Human Genetics Tuebingen

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

DSP: BP4, BP7 -

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

Jan 30, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Cardiomyopathy

Benign:1

Oct 16, 2018

Color Diagnostics, LLC DBA Color Health

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Primary dilated cardiomyopathy

Benign:1

Genetics and Genomics Program, Sidra Medicine

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: research

- -

Cardiovascular phenotype

Benign:1

Dec 09, 2016

Ambry Genetics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.62

CADD

Benign

0.019

DANN

Benign

0.90

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