6-7585755-GGGATCTCGCTCC-GGGATCTCGCTCCGGATCTCGCTCC

Position:

chr6-7585755-GGGATCTCGCTCC-GGGATCTCGCTCCGGATCTCGCTCC

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM4PP3

The NM_004415.4(DSP):c.8508_8519dupATCTCGCTCCGG(p.Gly2840_Ser2841insSerArgSerGly) variant causes a disruptive inframe insertion change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000391 in 1,609,456 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. G2840G) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000038 ( 0 hom. )

Consequence

DSP
NM_004415.4 disruptive_inframe_insertion

Scores

Not classified

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:5

Conservation

PhyloP100: 8.12

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 3 ACMG points.

PM4

Nonframeshift variant in NON repetitive region in NM_004415.4.

PP3

No computational evidence supports a deleterious effect, but strongly conserved according to phyloP

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DSP	NM_004415.4 linkuse as main transcript	c.8508_8519dupATCTCGCTCCGG	p.Gly2840_Ser2841insSerArgSerGly	disruptive_inframe_insertion	24/24	ENST00000379802.8	NP_004406.2	P15924-1B4DKX6
DSP	NM_001319034.2 linkuse as main transcript	c.7179_7190dupATCTCGCTCCGG	p.Gly2397_Ser2398insSerArgSerGly	disruptive_inframe_insertion	24/24		NP_001305963.1	P15924-3B4DKX6
DSP	NM_001008844.3 linkuse as main transcript	c.6711_6722dupATCTCGCTCCGG	p.Gly2241_Ser2242insSerArgSerGly	disruptive_inframe_insertion	24/24		NP_001008844.1	P15924-2B4DKX6Q4LE79

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
DSP	ENST00000379802.8 linkuse as main transcript	c.8508_8519dupATCTCGCTCCGG	p.Gly2840_Ser2841insSerArgSerGly	disruptive_inframe_insertion	24/24	1	NM_004415.4	ENSP00000369129.3	P15924-1
DSP	ENST00000418664.2 linkuse as main transcript	c.6711_6722dupATCTCGCTCCGG	p.Gly2241_Ser2242insSerArgSerGly	disruptive_inframe_insertion	24/24	1		ENSP00000396591.2	P15924-2
DSP	ENST00000710359.1 linkuse as main transcript	c.7179_7190dupATCTCGCTCCGG	p.Gly2397_Ser2398insSerArgSerGly	disruptive_inframe_insertion	24/24			ENSP00000518230.1

Frequencies

GnomAD3 genomes

AF:

0.0000460

AC:

AN:

152090

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.000576

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000567

AC:

AN:

246768

Hom.:

AF XY:

0.0000747

AC XY:

AN XY:

133792

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.000922

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000358

Gnomad OTH exome

AF:

0.000167

GnomAD4 exome

AF:

0.0000384

AC:

AN:

1457366

Hom.:

Cov.:

AF XY:

0.0000400

AC XY:

AN XY:

724800

show subpopulations

Gnomad4 AFR exome

AF:

0.0000903

Gnomad4 AMR exome

AF:

0.0000227

Gnomad4 ASJ exome

AF:

0.000579

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000349

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000261

Gnomad4 OTH exome

AF:

0.0000665

GnomAD4 genome

AF:

0.0000460

AC:

AN:

152090

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74304

show subpopulations

Gnomad4 AFR

AF:

0.0000483

Gnomad4 AMR

AF:

0.0000655

Gnomad4 ASJ

AF:

0.000576

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Arrhythmogenic cardiomyopathy with wooly hair and keratoderma

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Center for Genomic Medicine, King Faisal Specialist Hospital and Research Center

Mar 26, 2024

- -

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

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jul 23, 2022

This variant, c.8508_8519dup, results in the insertion of 4 amino acid(s) of the DSP protein (p.Ser2843_Arg2846dup), but otherwise preserves the integrity of the reading frame. This variant is present in population databases (rs773419695, gnomAD 0.09%). This variant has not been reported in the literature in individuals affected with DSP-related conditions. ClinVar contains an entry for this variant (Variation ID: 848944). Experimental studies and prediction algorithms are not available or were not evaluated, and the functional significance of this variant is currently unknown. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been 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 21, 2022

This variant causes a duplication of 4-amino-acid motif (Ser-Gly-Ser-Arg) in the C-terminal region of the DSP protein that contains 5 consecutive repeats of the Ser-Gly-Ser-Arg motif. To our knowledge, functional studies have not been reported for this variant. This variant has been reported in a survivor of sudden cardiac arrest (PMID: 33652119). This variant has been identified in 16/278122 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. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

May 07, 2024

In-frame insertion of 4 amino acids in a non-repeat region; Has not been previously published as pathogenic or benign to our knowledge -

Cardiovascular phenotype

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 17, 2024

The c.8508_8519dup12 variant (also known as p.S2843_R2846dup), located in coding exon 24 of the DSP gene, results from an in-frame duplication of 12 nucleotides at nucleotide positions 8508 to 8519. This results in the duplication of 4 extra residues (SGSR) between codons 2843 and 2846. This amino acid region is highly conserved in available vertebrate species. In addition, this alteration is predicted to be inconclusive by in silico analysis (Choi Y et al. PLoS ONE. 2012; 7(10):e46688). Based on the available evidence, the clinical significance of this variant remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

Splicing

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