NM_001943.5(DSG2):c.2192A>C (p.Gln731Pro) AND Arrhythmogenic right ventricular cardiomyopathy

Germline classification:: Uncertain significance (2 submissions)
Last evaluated:: Dec 13, 2023
Review status:: 2 stars out of maximum of 4 stars
criteria provided, multiple submitters, no conflicts

Somatic classification of clinical impact:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Somatic classification of oncogenicity:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Record status:: current
Accession:: RCV000208116.11

Allele description [Variation Report for NM_001943.5(DSG2):c.2192A>C (p.Gln731Pro)]

NM_001943.5(DSG2):c.2192A>C (p.Gln731Pro)

Genes:

DSG2-AS1:DSG2 antisense RNA 1 [Gene - HGNC]
DSG2:desmoglein 2 [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

18q12.1

Genomic location:

Preferred name:

NM_001943.5(DSG2):c.2192A>C (p.Gln731Pro)

HGVS:

NC_000018.10:g.31542710A>C
NG_007072.3:g.49469A>C
NM_001943.5:c.2192A>CMANE SELECT
NP_001934.2:p.Gln731Pro
LRG_397t1:c.2192A>C
LRG_397:g.49469A>C
NC_000018.9:g.29122673A>C
NM_001943.3:c.2192A>C
NM_001943.4:c.2192A>C
p.Gln731Pro

Protein change:

Q731P

Links:

dbSNP: rs202063433

NCBI 1000 Genomes Browser:

rs202063433

Molecular consequence:

NM_001943.5:c.2192A>C - missense variant - [Sequence Ontology: SO:0001583]

Observations:

Condition(s)

Name:: Arrhythmogenic right ventricular cardiomyopathy (ARVD)
Synonyms:: Cardiomyopathy, ARVC; Arrhythmogenic right ventricular dysplasia
Identifiers:: MONDO: MONDO:0016587; MeSH: D019571; MedGen: C0349788

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV000263857	Blueprint Genetics	criteria provided, single submitter (Variant Classification)	Uncertain significance (Nov 24, 2015)	germline	clinical testing	Citation Link,
SCV004821765	All of Us Research Program, National Institutes of Health	criteria provided, single submitter (ACMG Guidelines, 2015)	Uncertain Significance (Dec 13, 2023)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]

Submission Accession

Submitter

Review Status
(Assertion method)

Clinical Significance
(Last evaluated)

Origin

Method

Citations

SCV000263857

Blueprint Genetics

criteria provided, single submitter

(Variant Classification)

Uncertain significance
(Nov 24, 2015)

germline

clinical testing

Citation Link,

SCV004821765

All of Us Research Program, National Institutes of Health

criteria provided, single submitter

(ACMG Guidelines, 2015)

Uncertain Significance
(Dec 13, 2023)

germline

clinical testing

PubMed (1)
[See all records that cite this PMID]

Help

Summary from all submissions

Ethnicity	Origin	Affected	Individuals	Families	Chromosomes tested	Number Tested	Family history	Method
not provided	germline	yes	1	not provided	not provided	not provided	not provided	clinical testing
not provided	germline	unknown	17	not provided	not provided	108544	not provided	clinical testing

Citations

PubMed

Standards and guidelines for the interpretation of sequence variants: a joint consensus recommendation of the American College of Medical Genetics and Genomics and the Association for Molecular Pathology.

Richards S, Aziz N, Bale S, Bick D, Das S, Gastier-Foster J, Grody WW, Hegde M, Lyon E, Spector E, Voelkerding K, Rehm HL; ACMG Laboratory Quality Assurance Committee..

Genet Med. 2015 May;17(5):405-24. doi: 10.1038/gim.2015.30. Epub 2015 Mar 5.

PubMed [citation]

PMID:: 25741868
PMCID:: PMC4544753

Details of each submission

From Blueprint Genetics, SCV000263857.2

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	1	not provided	not provided	clinical testing	not provided

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	yes	not provided	not provided	not provided		1	not provided	not provided	not provided

From All of Us Research Program, National Institutes of Health, SCV004821765.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	17	not provided	not provided	clinical testing	PubMed (1)

Description

This missense variant replaces glutamine with proline at codon 731 of the DSG2 protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with cardiovascular disorders in the literature. This variant has been identified in 29/280828 chromosomes (27/24200 chromosomes from individuals with African ancestry) in the general population by the Genome Aggregation Database (gnomAD). The relatively high frequency of this variant in the general population suggests that this variant is unlikely to be disease-causing. However, additional studies are necessary to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance.

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	108544	not provided	not provided		17	not provided	not provided	not provided

Last Updated: Nov 3, 2024

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