chr18-31546652-G-A

Position:

chr18-31546652-G-A

Variant summary

Our verdict is Benign. Variant got -16 ACMG points: 0P and 16B. BP4_StrongBP6_Very_StrongBS2

The NM_001943.5(DSG2):c.3266G>A(p.Gly1089Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000713 in 1,614,020 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00036 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000041 ( 0 hom. )

Consequence

DSG2
NM_001943.5 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: -0.104

Variant links:

Genes affected

DSG2 (HGNC:3049): (desmoglein 2) This gene encodes a member of the desmoglein family and cadherin cell adhesion molecule superfamily of proteins. Desmogleins are calcium-binding transmembrane glycoprotein components of desmosomes, cell-cell junctions between epithelial, myocardial, and other cell types. The encoded preproprotein is proteolytically processed to generate the mature glycoprotein. This gene is present in a gene cluster with other desmoglein gene family members on chromosome 18. Mutations in this gene have been associated with arrhythmogenic right ventricular dysplasia, familial, 10. [provided by RefSeq, Jan 2016]

DSG2 links:

DSG2-AS1 (HGNC:):

DSG2-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -16 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.008949935).

BP6

Variant 18-31546652-G-A is Benign according to our data. Variant chr18-31546652-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 264574.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS2

High AC in GnomAd4 at 55 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DSG2	NM_001943.5 linkuse as main transcript	c.3266G>A	p.Gly1089Asp	missense_variant	15/15	ENST00000261590.13	NP_001934.2	Q14126
DSG2	XM_047437315.1 linkuse as main transcript	c.2732G>A	p.Gly911Asp	missense_variant	16/16		XP_047293271.1
DSG2-AS1	NR_045216.1 linkuse as main transcript	n.1346-746C>T		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
DSG2	ENST00000261590.13 linkuse as main transcript	c.3266G>A	p.Gly1089Asp	missense_variant	15/15	1	NM_001943.5	ENSP00000261590.8	Q14126
DSG2-AS1	ENST00000583706.5 linkuse as main transcript	n.1384-746C>T		intron_variant		5
DSG2-AS1	ENST00000657343.1 linkuse as main transcript	n.697-746C>T		intron_variant

Frequencies

GnomAD3 genomes

AF:

0.000362

AC:

AN:

152140

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00130

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

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:

0.000478

GnomAD3 exomes

AF:

0.000112

AC:

AN:

249268

Hom.:

AF XY:

0.0000961

AC XY:

AN XY:

135210

show subpopulations

Gnomad AFR exome

AF:

0.00161

Gnomad AMR exome

AF:

0.0000290

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000165

GnomAD4 exome

AF:

0.0000410

AC:

AN:

1461880

Hom.:

Cov.:

AF XY:

0.0000358

AC XY:

AN XY:

727246

show subpopulations

Gnomad4 AFR exome

AF:

0.00155

Gnomad4 AMR exome

AF:

0.0000671

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000828

GnomAD4 genome

AF:

0.000362

AC:

AN:

152140

Hom.:

Cov.:

AF XY:

0.000336

AC XY:

AN XY:

74326

show subpopulations

Gnomad4 AFR

AF:

0.00130

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000478

Alfa

AF:

0.0000957

Hom.:

Bravo

AF:

0.000404

ESP6500AA

AF:

0.00231

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000124

AC:

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:7

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Cardiomyopathy

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	Color Diagnostics, LLC DBA Color Health	Nov 26, 2018	- -
Benign, criteria provided, single submitter	clinical testing	CHEO Genetics Diagnostic Laboratory, Children's Hospital of Eastern Ontario	Sep 04, 2019	- -

not specified

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

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

Jul 05, 2022

Variant summary: DSG2 c.3266G>A (p.Gly1089Asp) results in a non-conservative amino acid change in the encoded protein sequence. Four of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 0.00011 in 249268 control chromosomes, predominantly at a frequency of 0.0016 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 6 fold of the estimated maximal expected allele frequency for a pathogenic variant in DSG2 causing Arrhythmogenic Right Ventricular Dysplasia/Cardiomyopathy phenotype (0.00025), strongly suggesting that the variant is a benign polymorphism found primarily in populations of African or African-American origin. c.3266G>A has been reported in the literature in individuals affected with Arrhythmogenic Right Ventricular Dysplasia/Cardiomyopathy. This report does not provide unequivocal conclusions about association of the variant with Arrhythmogenic Right Ventricular Dysplasia/Cardiomyopathy. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Five clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation. All laboratories classified the variant as benign/likely benign. Based on the evidence outlined above, the variant was classified as likely benign. -

Arrhythmogenic right ventricular dysplasia 10

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 02, 2024

- -

not provided

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

GeneDx

Apr 10, 2021

- -

Cardiovascular phenotype

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 23, 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. -

DSG2-related disorder

Benign:1

Likely benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Aug 17, 2023

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

0.081

BayesDel_addAF

Benign

-0.58

BayesDel_noAF

Benign

-0.64

CADD

Benign

9.7

DANN

Benign

0.70

DEOGEN2

Benign

0.16

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.0

FATHMM_MKL

Benign

0.025

LIST_S2

Benign

0.59

M_CAP

Benign

0.017

MetaRNN

Benign

0.0089

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.1

PrimateAI

Benign

0.26

PROVEAN

Benign

0.18

REVEL

Benign

0.041

Sift

Benign

0.47

Sift4G

Benign

0.40

Polyphen

0.012

Vest4

0.073

MVP

0.48

MPC

0.093

ClinPred

0.0033

GERP RS

0.12

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.020

gMVP

0.34

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