rs749323567

Positions:

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 2P and 16B. PM2BP4_StrongBP6_Very_StrongBS1

The NM_001406506.1(DSC2):c.-295C>T variant causes a 5 prime UTR premature start codon gain change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000972 in 1,604,980 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 0.00017 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000090 ( 0 hom. )

Consequence

DSC2
NM_001406506.1 5_prime_UTR_premature_start_codon_gain

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:7

Conservation

PhyloP100: 0.361

Variant links:

Genes affected

DSC2 (HGNC:3036): (desmocollin 2) This gene encodes a member of the desmocollin protein subfamily. Desmocollins, along with desmogleins, are cadherin-like transmembrane glycoproteins that are major components of the desmosome. Desmosomes are cell-cell junctions that help resist shearing forces and are found in high concentrations in cells subject to mechanical stress. This gene is found in a cluster with other desmocollin family members on chromosome 18. Mutations in this gene are associated with arrhythmogenic right ventricular dysplasia-11, and reduced protein expression has been described in several types of cancer. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Feb 2015]

DSC2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -14 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.61).

BP6

Variant 18-31093578-G-A is Benign according to our data. Variant chr18-31093578-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 416266.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population eas. gnomad4_exome allele frequency = 0.0000901 (131/1453474) while in subpopulation EAS AF= 0.00061 (24/39340). AF 95% confidence interval is 0.00042. There are 0 homozygotes in gnomad4_exome. There are 69 alleles in male gnomad4_exome subpopulation. Median coverage is 29. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DSC2	NM_024422.6 linkuse as main transcript	c.135C>T	p.Ala45Ala	synonymous_variant	2/16	ENST00000280904.11	NP_077740.1	Q02487-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DSC2	ENST00000280904.11 linkuse as main transcript	c.135C>T	p.Ala45Ala	synonymous_variant	2/16	1	NM_024422.6	ENSP00000280904.6		Q02487-1

Frequencies

GnomAD3 genomes

AF:

0.000165

AC:

AN:

151506

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000291

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000264

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000118

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000995

AC:

AN:

251324

Hom.:

AF XY:

0.000133

AC XY:

AN XY:

135826

show subpopulations

Gnomad AFR exome

AF:

0.0000616

Gnomad AMR exome

AF:

0.000202

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000980

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000106

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.0000901

AC:

131

AN:

1453474

Hom.:

Cov.:

AF XY:

0.0000954

AC XY:

AN XY:

723272

show subpopulations

Gnomad4 AFR exome

AF:

0.000181

Gnomad4 AMR exome

AF:

0.000202

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000610

Gnomad4 SAS exome

AF:

0.0000814

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000687

Gnomad4 OTH exome

AF:

0.000134

GnomAD4 genome

AF:

0.000165

AC:

AN:

151506

Hom.:

Cov.:

AF XY:

0.000176

AC XY:

AN XY:

73940

show subpopulations

Gnomad4 AFR

AF:

0.000291

Gnomad4 AMR

AF:

0.000264

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000118

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000113

Hom.:

Bravo

AF:

0.000227

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:7

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:3

Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Oct 01, 2023	DSC2: BP4, BP7 -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Feb 25, 2021	- -
Benign, criteria provided, single submitter	clinical testing	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	May 09, 2016	Variant summary: The DSC2 c.135C>T (p.Ala45Ala) variant involves the alteration of a non-conserved nucleotide, resulting in a synonymous change. 4/5 splice prediction tools predict no significant impact on normal splicing. This variant was found in 10/121372 control chromosomes, predominantly observed in the Latino subpopulation at a frequency of 0.0003456 (4/11574). This frequency is about 35 times the estimated maximal expected allele frequency of a pathogenic DSC2 variant (0.00001), suggesting this is likely a benign polymorphism found primarily in the populations of Latino origin. The variant of interest has not, to our knowledge, been reported in affected individuals via publications and clinical diagnostic laboratories. Taken together, this variant is classified as Benign. -

Arrhythmogenic right ventricular dysplasia 11

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 11, 2024

- -

Cardiomyopathy

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Color Diagnostics, LLC DBA Color Health

Oct 22, 2018

- -

Cardiovascular phenotype

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 20, 2018

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. -

Familial isolated arrhythmogenic right ventricular dysplasia

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

All of Us Research Program, National Institutes of Health

Feb 05, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.61

CADD

Benign

6.2

DANN

Benign

0.44

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

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