18-31386703-A-G

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_177986.5(DSG4):c.100A>G(p.Ile34Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000112 in 1,613,288 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 Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000062 ( 0 hom. )

Consequence

DSG4
NM_177986.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.0370

Variant links:

Genes affected

DSG4 (HGNC:21307): (desmoglein 4) This gene encodes a member of the desmoglein subgroup of desmosomal cadherins. The encoded preproprotein is proteolytically processed to generate the mature protein. This protein is a transmembrane component of desmosomes and may play a role in cell-cell adhesion in epithelial cells. Mutations in the gene are associated with localized autosomal recessive hypotrichosis and monilethrix, characterized by impaired hair growth. [provided by RefSeq, May 2016]

DSG4 links:

DSG1-AS1 (HGNC:51115): (DSG1 antisense RNA 1)

DSG1-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.023714483).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
DSG4	NM_177986.5 linkuse as main transcript	c.100A>G	p.Ile34Val	missense_variant	3/16	ENST00000308128.9
DSG1-AS1	NR_110788.1 linkuse as main transcript	n.157-32250T>C		intron_variant, non_coding_transcript_variant
DSG4	NM_001134453.3 linkuse as main transcript	c.100A>G	p.Ile34Val	missense_variant	3/15

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
DSG4	ENST00000308128.9 linkuse as main transcript	c.100A>G	p.Ile34Val	missense_variant	3/16	1	NM_177986.5	P2	Q86SJ6-1
DSG1-AS1	ENST00000581856.5 linkuse as main transcript	n.96-32250T>C		intron_variant, non_coding_transcript_variant		3

Frequencies

GnomAD3 genomes

AF:

0.0000591

AC:

AN:

152178

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000524

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:

0.000479

GnomAD3 exomes

AF:

0.0000120

AC:

AN:

250828

Hom.:

AF XY:

0.00000738

AC XY:

AN XY:

135510

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000579

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000164

GnomAD4 exome

AF:

0.00000616

AC:

AN:

1460992

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

726794

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000157

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:

9.00e-7

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000591

AC:

AN:

152296

Hom.:

Cov.:

AF XY:

0.0000537

AC XY:

AN XY:

74466

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000523

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:

0.000474

Bravo

AF:

0.000159

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 24, 2022

The c.100A>G (p.I34V) alteration is located in exon 3 (coding exon 3) of the DSG4 gene. This alteration results from a A to G substitution at nucleotide position 100, causing the isoleucine (I) at amino acid position 34 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.063

BayesDel_addAF

Benign

-0.37

BayesDel_noAF

Benign

-0.60

Cadd

Benign

9.2

Dann

Benign

0.93

DEOGEN2

Benign

0.068

T;.

Eigen

Benign

-0.73

Eigen_PC

Benign

-0.64

FATHMM_MKL

Benign

0.072

LIST_S2

Benign

0.51

T;T

M_CAP

Benign

0.0043

MetaRNN

Benign

0.024

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.41

N;N

MutationTaster

Benign

1.0

N;N

PrimateAI

Benign

0.25

PROVEAN

Benign

0.12

N;N

REVEL

Benign

0.062

Sift

Benign

0.40

T;T

Sift4G

Benign

0.27

T;T

Polyphen

0.0

B;B

Vest4

0.21

MutPred

0.47

Gain of ubiquitination at K30 (P = 0.1215);Gain of ubiquitination at K30 (P = 0.1215);

MVP

0.19

MPC

0.029

ClinPred

0.036

GERP RS

-0.13

Varity_R

0.039

gMVP

0.13

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.080

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