NM_024422.6:c.*1927T>C

Variant names:

• chr18-31066088-A-G
• rs532718510
• NM_024422.6:c.*1927T>C

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_Strong BS1_Supporting

The NM_024422.6(DSC2):​c.*1927T>C variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000269 in 152,304 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

• Frequency:
  • Genomes: 𝑓 0.00027 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: DSC2 NM_024422.6 3_prime_UTR
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 3.25
• Publications: 0 publications found

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):

• arrhythmogenic right ventricular dysplasia 11

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

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• colorectal adenoma

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

Our verdict: Likely_benign. The variant received -5 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.78).
• BS1: Variant frequency is greater than expected in population sas. GnomAd4 allele frequency = 0.000269 (41/152304) while in subpopulation SAS AF = 0.000415 (2/4822). AF 95% confidence interval is 0.000218. There are 0 homozygotes in GnomAd4. There are 17 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_024422.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DSC2	NM_024422.6	MANE Select	c.*1927T>C		3_prime_UTR	Exon 16 of 16	NP_077740.1	Q02487-1
	DSC2	NM_004949.5		c.*2135T>C		3_prime_UTR	Exon 17 of 17	NP_004940.1	Q02487-2
	DSC2	NM_001406506.1		c.*1927T>C		3_prime_UTR	Exon 16 of 16	NP_001393435.1	A0A3B3ISU0

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DSC2	ENST00000280904.11	TSL:1 MANE Select	c.*1927T>C		3_prime_UTR	Exon 16 of 16	ENSP00000280904.6	Q02487-1
	DSC2	ENST00000251081.8	TSL:1	c.*2135T>C		3_prime_UTR	Exon 17 of 17	ENSP00000251081.6	Q02487-2
	DSC2	ENST00000713707.1		c.*1927T>C		3_prime_UTR	Exon 16 of 16	ENSP00000519010.1	A0AAQ5BGP6

Frequencies

GnomAD3 genomes AF: 0.000269 AC: 41 AN: 152186 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000482

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000131

Gnomad ASJ AF: 0.00231

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000414

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00949

Gnomad NFE AF: 0.000323

Gnomad OTH AF: 0.000957

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 10 Hom.: 0 Cov.: 0 AF XY: 0.00 AC XY: 0 AN XY: 6

African (AFR) AF: 0.00 AC: 0 AN: 2

American (AMR) AC: 0 AN: 0

Ashkenazi Jewish (ASJ) AC: 0 AN: 0

East Asian (EAS) AC: 0 AN: 0

South Asian (SAS) AC: 0 AN: 0

European-Finnish (FIN) AC: 0 AN: 0

Middle Eastern (MID) AC: 0 AN: 0

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 6

Other (OTH) AF: 0.00 AC: 0 AN: 2

GnomAD4 genome AF: 0.000269 AC: 41 AN: 152304 Hom.: 0 Cov.: 32 AF XY: 0.000228 AC XY: 17 AN XY: 74472

African (AFR) AF: 0.0000481 AC: 2 AN: 41574

American (AMR) AF: 0.000131 AC: 2 AN: 15292

Ashkenazi Jewish (ASJ) AF: 0.00231 AC: 8 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5176

South Asian (SAS) AF: 0.000415 AC: 2 AN: 4822

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10628

Middle Eastern (MID) AF: 0.0102 AC: 3 AN: 294

European-Non Finnish (NFE) AF: 0.000323 AC: 22 AN: 68024

Other (OTH) AF: 0.000947 AC: 2 AN: 2112

Alfa AF: 0.000208 Hom.: 0

Bravo AF: 0.000234

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	1	-	Arrhythmogenic right ventricular dysplasia 11 (1)
-	1	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.78
CADD	Benign	10
DANN	Benign	0.72
PhyloP100		3.2

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: rs532718510; hg19: chr18-28646054;