Genetic Variant DSC2:p.Gln116His (chr18-31092107-T-G) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_024422.6(DSC2):c.348A>C(p.Gln116His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,459,822 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. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Q116E) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

DSC2
NM_024422.6 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.00200

Publications

0 publications found

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 Gene-Disease associations (from GenCC):

familial isolated arrhythmogenic right ventricular dysplasia
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
arrhythmogenic right ventricular dysplasia 11
Inheritance: AR, AD, SD Classification: DEFINITIVE, STRONG, LIMITED Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics
colorectal adenoma
Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

DSC2 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.13343093).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DSC2	NM_024422.6 link	c.348A>C	p.Gln116His	missense_variant	Exon 3 of 16	ENST00000280904.11	NP_077740.1	Q02487-1
DSC2	NM_004949.5 link	c.348A>C	p.Gln116His	missense_variant	Exon 3 of 17		NP_004940.1	Q02487-2
DSC2	NM_001406506.1 link	c.-82A>C		5_prime_UTR_variant	Exon 3 of 16		NP_001393435.1
DSC2	NM_001406507.1 link	c.-82A>C		5_prime_UTR_variant	Exon 3 of 17		NP_001393436.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DSC2	ENST00000280904.11 link	c.348A>C	p.Gln116His	missense_variant	Exon 3 of 16	1	NM_024422.6	ENSP00000280904.6		Q02487-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1459822

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726252

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33416

American (AMR)

AF:

0.00

AC:

AN:

44688

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26104

East Asian (EAS)

AF:

0.00

AC:

AN:

39588

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86124

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53368

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5268

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1110978

Other (OTH)

AF:

0.00

AC:

AN:

60288

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.14

BayesDel_addAF

Benign

-0.22

BayesDel_noAF

Benign

-0.56

CADD

Benign

(source)

DANN

Uncertain

0.98

DEOGEN2

Benign

0.077

T;.

Eigen

Benign

-0.63

Eigen_PC

Benign

-0.61

FATHMM_MKL

Benign

0.62

LIST_S2

Benign

0.74

T;T

M_CAP

Benign

0.014

MetaRNN

Benign

0.13

T;T

MetaSVM

Benign

-0.99

MutationAssessor

Benign

1.3

L;L

PhyloP100

0.0020

PrimateAI

Benign

0.33

PROVEAN

Benign

-1.9

N;N

REVEL

Benign

0.036

Sift

Benign

0.15

T;T

Sift4G

Benign

0.18

T;T

Polyphen

0.0090

B;B

Vest4

0.27

MutPred

0.38

Loss of MoRF binding (P = 0.1064);Loss of MoRF binding (P = 0.1064);

MVP

0.54

MPC

0.076

ClinPred

0.062

GERP RS

-2.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.059

gMVP

0.50

Mutation Taster

=96/4

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over