rs767538450

Variant names:

• chr18-31546553-C-T
• rs767538450
• NM_001943.5:c.3167C>T

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_001943.5(DSG2):​c.3167C>T​(p.Thr1056Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000737 in 1,614,096 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T1056A) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.000033 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000078 (0 hom.)
• Consequence: DSG2 NM_001943.5 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:9
• Conservation: PhyloP100: 0.860
• Publications: 2 publications found

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-AS1 (HGNC:51311): (DSG2 antisense RNA 1)

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.10888842).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001943.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DSG2	NM_001943.5	MANE Select	c.3167C>T	p.Thr1056Ile	missense	Exon 15 of 15	NP_001934.2
	DSG2-AS1	NR_045216.1		n.1346-647G>A		intron	N/A

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DSG2	ENST00000261590.13	TSL:1 MANE Select	c.3167C>T	p.Thr1056Ile	missense	Exon 15 of 15	ENSP00000261590.8
	DSG2	ENST00000713817.1		c.3158C>T	p.Thr1053Ile	missense	Exon 16 of 16	ENSP00000519121.1
	DSG2	ENST00000713819.1		c.3158C>T	p.Thr1053Ile	missense	Exon 17 of 17	ENSP00000519123.1

Frequencies

GnomAD3 genomes AF: 0.0000328 AC: 5 AN: 152224 Hom.: 0 Cov.: 32

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: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000735

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000200 AC: 5 AN: 249434 AF XY: 0.0000222

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000442

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000780 AC: 114 AN: 1461872 Hom.: 0 Cov.: 32 AF XY: 0.0000646 AC XY: 47 AN XY: 727236

African (AFR) AF: 0.00 AC: 0 AN: 33478

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.0000116 AC: 1 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53416

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.0000998 AC: 111 AN: 1111996

Other (OTH) AF: 0.0000331 AC: 2 AN: 60396

GnomAD4 genome AF: 0.0000328 AC: 5 AN: 152224 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 74372

African (AFR) AF: 0.00 AC: 0 AN: 41464

American (AMR) AF: 0.00 AC: 0 AN: 15282

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5196

South Asian (SAS) AF: 0.00 AC: 0 AN: 4832

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10626

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000735 AC: 5 AN: 68034

Other (OTH) AF: 0.00 AC: 0 AN: 2094

Alfa AF: 0.000120 Hom.: 0

Bravo AF: 0.0000567

TwinsUK AF: 0.000270 AC: 1

ALSPAC AF: 0.00 AC: 0

EpiCase AF: 0.0000545

EpiControl AF: 0.0000593

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	2	-	Cardiomyopathy (2)
-	1	-	Arrhythmogenic right ventricular cardiomyopathy (1)
-	1	-	Arrhythmogenic right ventricular dysplasia 10 (1)
-	1	-	Arrhythmogenic right ventricular dysplasia 10;C2752072:Dilated cardiomyopathy 1BB (1)
-	1	-	Cardiovascular phenotype (1)
-	1	-	Dilated cardiomyopathy 1BB (1)
-	1	-	not provided (1)
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.10
BayesDel_addAF	Benign	-0.17	T
BayesDel_noAF	Benign	-0.37
CADD	Benign	17
DANN	Uncertain	0.99
DEOGEN2	Benign	0.15	T
Eigen	Benign	-0.52
Eigen_PC	Benign	-0.48
FATHMM_MKL	Benign	0.27	N
LIST_S2	Benign	0.65	T
M_CAP	Benign	0.022	T
MetaRNN	Benign	0.11	T
MetaSVM	Benign	-0.83	T
MutationAssessor	Benign	1.8	L
PhyloP100		0.86
PrimateAI	Benign	0.30	T
PROVEAN	Benign	-0.80	N
REVEL	Benign	0.17
Sift	Benign	0.059	T
Sift4G	Benign	0.54	T
Polyphen		0.27	B
Vest4		0.15
MVP		0.80
MPC		0.18
ClinPred		0.061	T
GERP RS		1.8
Varity_R		0.046
gMVP		0.35
Mutation Taster		=95/5	polymorphism

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

Other links and lift over

dbSNP: rs767538450; hg19: chr18-29126516;