18-31531255-AAGAG-AAG

Position:

chr18-31531255-AAGAG-AAG

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP6BS1BS2

The NM_001943.5(DSG2):c.1280+10_1280+11delAG variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000465 in 1,614,120 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000052 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000046 ( 0 hom. )

Consequence

DSG2
NM_001943.5 intron

Scores

Not classified

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:6

Conservation

PhyloP100: 2.76

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 (HGNC:):

DSG2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -9 ACMG points.

BP6

Variant 18-31531255-AAG-A is Benign according to our data. Variant chr18-31531255-AAG-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 228628.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=4, Uncertain_significance=3, Benign=1}.

BS1

Variant frequency is greater than expected in population eas. gnomad4_exome allele frequency = 0.0000458 (67/1461736) while in subpopulation EAS AF= 0.00159 (63/39684). AF 95% confidence interval is 0.00127. There are 0 homozygotes in gnomad4_exome. There are 35 alleles in male gnomad4_exome subpopulation. This position pass quality control queck.

BS2

High AC in GnomAd4 at 8 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DSG2	NM_001943.5 linkuse as main transcript	c.1280+10_1280+11delAG		intron_variant		ENST00000261590.13	NP_001934.2	Q14126
DSG2	XM_047437315.1 linkuse as main transcript	c.746+10_746+11delAG		intron_variant			XP_047293271.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DSG2	ENST00000261590.13 linkuse as main transcript	c.1280+10_1280+11delAG		intron_variant		1	NM_001943.5	ENSP00000261590.8		Q14126
DSG2	ENST00000683614.2 linkuse as main transcript	n.1121_1122delAG		non_coding_transcript_exon_variant	7/7					A0A804HJ09

Frequencies

GnomAD3 genomes

AF:

0.0000525

AC:

AN:

152266

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:

0.00154

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000181

AC:

AN:

248976

Hom.:

AF XY:

0.000215

AC XY:

AN XY:

135092

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00250

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000458

AC:

AN:

1461736

Hom.:

AF XY:

0.0000481

AC XY:

AN XY:

727156

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00159

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000662

GnomAD4 genome

AF:

0.0000525

AC:

AN:

152384

Hom.:

Cov.:

AF XY:

0.0000805

AC XY:

AN XY:

74524

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00154

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.000196

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:3Benign:6

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:1Benign:2

Uncertain significance, criteria provided, single submitter	clinical testing	Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	Apr 13, 2015	Variant classified as Uncertain Significance - Favor Benign. The c.1280+4AG[3] ( also reported as c.1280+4_1280+5delAG) variant in DSG2 has not been previously r eported in individuals with cardiomyopathy, but has been identified in 0.2% (19/ 8616) of East Asian chromosomes by the Exome Aggregation Consortium (ExAC, http: //exac.broadinstitute.org). This variant results in a deletion of one dinucleoti de repeat in the 5' splice region. Computational tools do not suggest an impact to splicing. However, this information is not predictive enough to rule out path ogenicity. In summary, while the clinical significance of the c.1280+4AG[3] vari ant is uncertain, its frequency suggests that it is more likely to be benign. -
Likely benign, criteria provided, single submitter	clinical testing	Phosphorus, Inc.	Jan 19, 2022	This deletion variant is located 10bp away from the canonical splice-site in intron 9 of the DSG2 gene (transcript: NM_001943.3). This variant has an entry in ClinVar (228628) NM_001943.5(DSG2):c.1280+4AG[3]. This variant occurred in gnomAD with a total MAF of 0.0175% and the highest MAF of 0.2494% in the East Asian population. This position is not conserved. In silico splicing algorithms predicted that this variant will not have an impact on splicing (not found in scSNV). The variant has not occurred in the literature in association with disease. Considering that the variant has a relatively high frequency in the population, it has been classified as Likely Benign. -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Jun 24, 2016	This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Arrhythmogenic right ventricular cardiomyopathy

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

Dilated Cardiomyopathy, Dominant

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

Cardiomyopathy

Benign:1

Benign, criteria provided, single submitter

clinical testing

Color Diagnostics, LLC DBA Color Health

Dec 03, 2018

- -

Arrhythmogenic right ventricular dysplasia 10

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 09, 2024

- -

not provided

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

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

Mar 06, 2017

Variant summary: The DSG2 c.1280+10_1280+11delAG variant involves the alteration of an intronic nucleotide, which 5/5 splice prediction tools predict no significant impact on normal splicing. However, these predictions have yet to be confirmed by functional studies. This variant was found in 19/120602 control chromosomes, predominantly observed in the East Asian subpopulation at a frequency of 0.002206 (19/8612). This frequency is about 221 times the estimated maximal expected allele frequency of a pathogenic DSG2 variant (0.00001), suggesting this is likely a benign polymorphism found primarily in population(s) of East Asian origin. The variant of interest has not, to our knowledge, been reported in affected individuals via publications. In addition, multiple clinical diagnostic laboratories/reputable databases classified this variant as uncertain significance, without additional information to perform an independent evaluation. Therefore, the variant of interest has been classified as "likely benign." -

DSG2-related disorder

Benign:1

Likely benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Oct 19, 2020

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

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