NM_024422.6:c.2326A>T

Variant names:

• chr18-31069076-T-A
• NM_024422.6:c.2326A>T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_024422.6(DSC2):​c.2326A>T​(p.Ile776Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 16/21 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. I776M) has been classified as Benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: DSC2 NM_024422.6 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.0600

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.081528634).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DSC2	NM_024422.6	c.2326A>T	p.Ile776Phe	missense_variant	Exon 15 of 16	ENST00000280904.11	NP_077740.1
DSC2	NM_004949.5	c.2326A>T	p.Ile776Phe	missense_variant	Exon 15 of 17		NP_004940.1
DSC2	NM_001406506.1	c.1897A>T	p.Ile633Phe	missense_variant	Exon 15 of 16		NP_001393435.1
DSC2	NM_001406507.1	c.1897A>T	p.Ile633Phe	missense_variant	Exon 15 of 17		NP_001393436.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DSC2	ENST00000280904.11	c.2326A>T	p.Ile776Phe	missense_variant	Exon 15 of 16	1	NM_024422.6	ENSP00000280904.6
DSC2	ENST00000251081.8	c.2326A>T	p.Ile776Phe	missense_variant	Exon 15 of 17	1		ENSP00000251081.6
DSC2	ENST00000648081.1	c.1897A>T	p.Ile633Phe	missense_variant	Exon 16 of 17			ENSP00000497441.1
DSC2	ENST00000682357.1	c.1897A>T	p.Ile633Phe	missense_variant	Exon 15 of 16			ENSP00000507826.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.077
BayesDel_addAF	Benign	-0.17	T
BayesDel_noAF	Benign	-0.48
CADD	Benign	12
DANN	Benign	0.81
DEOGEN2	Benign	0.12	T;.;.
Eigen	Benign	-0.94
Eigen_PC	Benign	-0.91
FATHMM_MKL	Benign	0.098	N
LIST_S2	Benign	0.67	T;T;T
M_CAP	Benign	0.057	D
MetaRNN	Benign	0.082	T;T;T
MetaSVM	Benign	-0.79	T
MutationAssessor	Benign	0.90	L;L;.
PrimateAI	Benign	0.33	T
PROVEAN	Benign	-2.3	N;N;.
REVEL	Benign	0.093
Sift	Uncertain	0.020	D;D;.
Sift4G	Uncertain	0.028	D;D;.
Polyphen		0.13	B;P;.
Vest4		0.11
MutPred		0.38		Loss of sheet (P = 0.0011);Loss of sheet (P = 0.0011);.;
MVP		0.46
MPC		0.12
ClinPred		0.13	T
GERP RS		3.7
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.080
gMVP		0.36

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr18-28649042;