rs138599871

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is Benign. Variant got -7 ACMG points: 0P and 7B. BP4_ModerateBP6BS1

The NM_004415.4(DSP):c.3956C>G(p.Thr1319Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000459 in 1,613,888 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 12/21 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 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000049 ( 1 hom. )

Consequence

DSP
NM_004415.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:4

Conservation

PhyloP100: 2.00

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 -7 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.25256377).

BP6

Variant 6-7580146-C-G is Benign according to our data. Variant chr6-7580146-C-G is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 179434.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=4, Uncertain_significance=3}.

BS1

Variant frequency is greater than expected in population sas. gnomad4_exome allele frequency = 0.0000486 (71/1461812) while in subpopulation SAS AF= 0.000742 (64/86254). AF 95% confidence interval is 0.000596. There are 1 homozygotes in gnomad4_exome. There are 51 alleles in male gnomad4_exome subpopulation. Median coverage is 32. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DSP	NM_004415.4 link	c.3956C>G	p.Thr1319Ser	missense_variant	Exon 23 of 24	ENST00000379802.8	NP_004406.2	P15924-1B4DKX6
DSP	NM_001319034.2 link	c.3956C>G	p.Thr1319Ser	missense_variant	Exon 23 of 24		NP_001305963.1	P15924-3B4DKX6
DSP	NM_001008844.3 link	c.3582+374C>G		intron_variant	Intron 23 of 23		NP_001008844.1	P15924-2B4DKX6Q4LE79

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
DSP	ENST00000379802.8 link	c.3956C>G	p.Thr1319Ser	missense_variant	Exon 23 of 24	1	NM_004415.4	ENSP00000369129.3	P15924-1
DSP	ENST00000418664.2 link	c.3582+374C>G		intron_variant	Intron 23 of 23	1		ENSP00000396591.2	P15924-2
DSP	ENST00000710359.1 link	c.3956C>G	p.Thr1319Ser	missense_variant	Exon 23 of 24			ENSP00000518230.1

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152076

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000621

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000758

AC:

AN:

250720

Hom.:

AF XY:

0.000103

AC XY:

AN XY:

135610

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000116

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000490

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000486

AC:

AN:

1461812

Hom.:

Cov.:

AF XY:

0.0000701

AC XY:

AN XY:

727200

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000894

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000742

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152076

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74286

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000621

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000113

ExAC

AF:

0.0000576

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:3Benign:4

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:1Benign:1

Nov 20, 2013

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The Thr1319Ser variant in DSP has not been previously reported in individuals wi th cardiomyopathy and was absent from large population studies. Computational an alyses (biochemical amino acid properties, conservation, AlignGVGD, PolyPhen2, a nd SIFT) do not provide strong support for or against an impact to the protein. In summary, additional information is needed to fully assess the clinical signif icance of this variant. -

Mar 26, 2018

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

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: DSP c.3956C>G (p.Thr1319Ser) results in a conservative amino acid change in the encoded protein sequence. Three of five in-silico tools predict a benign effect of the variant on protein function. The observed variant frequency within South Asian control individuals in the gnomAD database is approximately 49 fold above 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 South Asian origin. To our knowledge, no occurrence of c.3956C>G in individuals affected with Arrhythmia and no experimental evidence demonstrating its impact on protein function have been reported. One clinical diagnostic laboratory has submitted clinical-significance assessments for this variant to ClinVar after 2014, and classified the variant as uncertain significance. Based on the evidence outlined above, the variant was classified as likely benign. -

Cardiomyopathy, dilated, with wooly hair, keratoderma, and tooth agenesis

Uncertain:1

Jul 17, 2023

Victorian Clinical Genetics Services, Murdoch Childrens Research Institute

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Based on the classification scheme VCGS_Germline_v1.3.4, this variant is classified as VUS-3C. Following criteria are met: 0102 - Loss of function is a known mechanism of disease in this gene and is associated with ARVD (MIM#607450) and other DSP-related cardiac disorders. (I) 0108 - This gene is associated with both recessive and dominant disease. Variants in this gene are usually inherited in a dominant manner, however rare reports of recessive inheritance have resulted in a more severe cardiac phenotype (OMIM). (I) 0115 - Variants in this gene are known to have variable expressivity. Age-dependent penetrance and variable expressivity are well-described aspects of arrhythmogenic cardiomyopathy (PMID: 29062697). (I) 0115 - Variants in this gene are known to have variable expressivity. Age-dependent penetrance and variable expressivity are well-described aspects of arrhythmogenic cardiomyopathy (PMID: 29062697). (I) 0200 - Variant is predicted to result in a missense amino acid change from threonine to serine. (I) 0251 - This variant is heterozygous. (I) 0304 - Variant is present in gnomAD (v2) <0.01 (19 heterozygotes, 0 homozygotes). (SP) 0309 - An alternative amino acid change at the same position has been observed in gnomAD (v2 and v3) (p.(Thr1319Ile): 10 heterozygotes, 0 homozygotes). (I) 0502 - Missense variant with conflicting in silico predictions and uninformative conservation. (I) 0604 - Variant is not located in an established domain, motif, hotspot or informative constraint region. (I) 0705 - No comparable missense variants have previous evidence for pathogenicity. (I) 0808 - Previous reports of pathogenicity for this variant are conflicting. This variant has been classified as likely benign and VUS by multiple clincal diagnostic laboratories (ClinVar). In addition, this variant has been reported in one individual with hypertrophic cardiomyopathy with left ventricular systolic dysfunction and in one child with dilated cardiomyopathy; in both instances this variant was classified as a VUS (PMIDs: 32228044, 32746448). (I) 0905 - No published segregation evidence has been identified for this variant. (I) 1007 - No published functional evidence has been identified for this variant. (I) 1208 - Inheritance information for this variant is not currently available in this individual. (I) Legend: (SP) - Supporting pathogenic, (I) - Information, (SB) - Supporting benign -

not provided

Uncertain:1

Jun 19, 2017

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The T1319S variant has not been published as pathogenic or been reported as benign to our knowledge. This substitution occurs at a position that is conserved in mammals. Nevertheless, The T1319S variant is a conservative amino acid substitution, which is not likely to impact secondary protein structure as these residues share similar properties. In silico analysis is inconsistent in its predictions as to whether or not the variant is damaging to the protein structure/function. Finally, the Exome Aggregation Consortium reports T1319S was observed in 6/16468 (0.04%) alleles from individuals of South Asian background (Lek et al., 2016). -

Arrhythmogenic cardiomyopathy with wooly hair and keratoderma

Benign:1

May 14, 2024

All of Us Research Program, National Institutes of Health

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

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

Benign:1

Aug 05, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Cardiomyopathy

Benign:1

Nov 18, 2020

Color Diagnostics, LLC DBA Color Health

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.23

BayesDel_addAF

Benign

-0.18

BayesDel_noAF

Benign

-0.16

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.19

Eigen

Uncertain

0.48

Eigen_PC

Uncertain

0.52

FATHMM_MKL

Uncertain

0.96

LIST_S2

Benign

0.67

M_CAP

Benign

0.079

MetaRNN

Benign

0.25

MetaSVM

Uncertain

0.12

MutationAssessor

Benign

0.69

PrimateAI

Uncertain

0.58

PROVEAN

Benign

-0.18

REVEL

Uncertain

0.36

Sift

Benign

0.28

Sift4G

Benign

0.69

Polyphen

0.99

Vest4

0.51

MutPred

0.087

Loss of methylation at K1318 (P = 0.0964);

MVP

0.66

MPC

0.77

ClinPred

0.13

GERP RS

5.3

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.078

gMVP

0.59

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