rs562015789

chr6-7582855-A-T

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4_Strong BP6

The NM_004415.4(DSP):c.5593A>T(p.Asn1865Tyr) variant causes a missense change. The variant allele was found at a frequency of 0.000219 in 1,614,142 control chromosomes in the GnomAD database, including 1 homozygotes. 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. N1865S) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.00012 (0 hom., cov: 32)
  • Exomes 𝑓: 0.00023 (1 hom.)
• Consequence: DSP NM_004415.4 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1 B:9
• Conservation: PhyloP100: 5.39

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]

ACMG classification

Verdict is Likely_benign. Variant got -5 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.016673118).
• BP6: Variant 6-7582855-A-T is Benign according to our data. Variant chr6-7582855-A-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 357959.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=9, Uncertain_significance=1}. Variant chr6-7582855-A-T is described in Lovd as [Likely_benign].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
DSP	NM_004415.4	c.5593A>T	p.Asn1865Tyr	missense_variant	24/24	ENST00000379802.8
DSP	NM_001319034.2	c.4264A>T	p.Asn1422Tyr	missense_variant	24/24
DSP	NM_001008844.3	c.3796A>T	p.Asn1266Tyr	missense_variant	24/24

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
DSP	ENST00000379802.8	c.5593A>T	p.Asn1865Tyr	missense_variant	24/24	1	NM_004415.4	P2
DSP	ENST00000418664.2	c.3796A>T	p.Asn1266Tyr	missense_variant	24/24	1		A2
DSP	ENST00000710359.1	c.4264A>T	p.Asn1422Tyr	missense_variant	24/24			A2

Frequencies

GnomAD3 genomes AF: 0.000125 AC: 19 AN: 152132 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000483

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00352

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.000441 AC: 111 AN: 251478 Hom.: 1 AF XY: 0.000603 AC XY: 82 AN XY: 135914

Gnomad AFR exome AF: 0.000185

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000544

Gnomad SAS exome AF: 0.00330

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000264

Gnomad OTH exome AF: 0.000489

GnomAD4 exome AF: 0.000228 AC: 334 AN: 1461892 Hom.: 1 Cov.: 32 AF XY: 0.000326 AC XY: 237 AN XY: 727246

Gnomad4 AFR exome AF: 0.0000597

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00342

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000809

Gnomad4 OTH exome AF: 0.000364

GnomAD4 genome AF: 0.000125 AC: 19 AN: 152250 Hom.: 0 Cov.: 32 AF XY: 0.000188 AC XY: 14 AN XY: 74446

Gnomad4 AFR AF: 0.0000481

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00353

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00

Gnomad4 OTH AF: 0.00

Alfa AF: 0.000260 Hom.: 0

Bravo AF: 0.0000416

ExAC AF: 0.000511 AC: 62

Asia WGS AF: 0.00346 AC: 12 AN: 3478

EpiCase AF: 0.000109

EpiControl AF: 0.00

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1 Benign:9

Revision: criteria provided, conflicting classifications

Submissions by phenotype

not provided Uncertain:1 Benign:1

Uncertain significance, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Jun 20, 2018	The p.Asn1865Tyr variant (rs562015789) was reported in one individual from a healthy cohort of 427 subjects of various ethnic backgrounds (Kapplinger 211). This variant is listed in the Genome Aggregation Database (gnomAD) with a frequency of 0.3 percent in the South Asian population (identified on 99 out of 30,782 chromosomes, including 1 homozygote), and has been reported to the ClinVar database (Variation ID: 357959). The asparagine at position 1865 is moderately conserved considering 12 species (Alamut v2.11) and computational analyses of the p.Asn1865Tyr variant on protein structure and function indicates a deleterious effect (SIFT: damaging, PolyPhen-2: possibly damaging). Altogether, there is not enough evidence to classify the p.Asn1865Tyr variant with certainty. -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Sep 08, 2020	This variant is associated with the following publications: (PMID: 21636032) -

Arrhythmogenic cardiomyopathy with wooly hair and keratoderma Benign:1

Likely benign, criteria provided, single submitter

clinical testing

All of Us Research Program, National Institutes of Health

Dec 15, 2023

- -

Arrhythmogenic right ventricular dysplasia 8;C1854063:Arrhythmogenic cardiomyopathy with wooly hair and keratoderma Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Invitae

Jan 01, 2024

- -

Cardiomyopathy Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Color Diagnostics, LLC DBA Color Health

Oct 10, 2018

- -

Lethal acantholytic epidermolysis bullosa Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Apr 27, 2017

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases allowed determination this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -

Woolly hair-skin fragility syndrome Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Apr 27, 2017

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases allowed determination this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -

Arrhythmogenic right ventricular dysplasia 8 Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Apr 27, 2017

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. The evidence from the literature, in combination with allele frequency data from public databases where available, was sufficient to determine this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -

Cardiovascular phenotype Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 24, 2019

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. -

DSP-related disorder Benign:1

Likely benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Feb 27, 2022

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.26
BayesDel_addAF	Benign	-0.28	T
BayesDel_noAF	Benign	-0.18
Cadd	Uncertain	25
Dann	Uncertain	1.0
DEOGEN2	Uncertain	0.57	D;.
Eigen	Uncertain	0.57
Eigen_PC	Uncertain	0.59
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.88	D;D
M_CAP	Benign	0.036	D
MetaRNN	Benign	0.017	T;T
MetaSVM	Benign	-0.76	T
MutationAssessor	Benign	1.9	L;.
MutationTaster	Benign	0.99	D;N
PrimateAI	Uncertain	0.71	T
PROVEAN	Uncertain	-3.1	D;D
REVEL	Benign	0.16
Sift	Uncertain	0.0060	D;D
Sift4G	Uncertain	0.030	D;D
Polyphen		0.99	D;.
Vest4		0.72
MVP		0.57
MPC		0.74
ClinPred		0.10	T
GERP RS		5.4
Varity_R		0.28
gMVP		0.32

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

Other links and lift over

dbSNP: rs562015789; hg19: chr6-7583088; COSMIC: COSV65794355;