2-219420544-A-T

Position:

chr2-219420544-A-T

Variant summary

Our verdict is Benign. Variant got -7 ACMG points: 2P and 9B. PM2BP4_StrongBP6BS1

The NM_001927.4(DES):c.785A>T(p.Glu262Val) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000141 in 1,613,916 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 Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00074 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000079 ( 0 hom. )

Consequence

DES
NM_001927.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:5B:6

Conservation

PhyloP100: 7.37

Variant links:

Genes affected

DES (HGNC:2770): (desmin) This gene encodes a muscle-specific class III intermediate filament. Homopolymers of this protein form a stable intracytoplasmic filamentous network connecting myofibrils to each other and to the plasma membrane. Mutations in this gene are associated with desmin-related myopathy, a familial cardiac and skeletal myopathy (CSM), and with distal myopathies. [provided by RefSeq, Jul 2008]

DES links:

DES (HGNC:):

DES links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -7 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.05641961).

BP6

Variant 2-219420544-A-T is Benign according to our data. Variant chr2-219420544-A-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 44270.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=3, Uncertain_significance=5}. Variant chr2-219420544-A-T is described in Lovd as [Benign]. Variant chr2-219420544-A-T is described in Lovd as [Likely_benign].

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.000743 (113/152168) while in subpopulation AFR AF= 0.00248 (103/41530). AF 95% confidence interval is 0.00209. There are 0 homozygotes in gnomad4. There are 60 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DES	NM_001927.4 linkuse as main transcript	c.785A>T	p.Glu262Val	missense_variant	4/9	ENST00000373960.4	NP_001918.3	P17661Q53SB5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
DES	ENST00000373960.4 linkuse as main transcript	c.785A>T	p.Glu262Val	missense_variant	4/9	1	NM_001927.4	ENSP00000363071.3	P17661
DES	ENST00000477226.6 linkuse as main transcript	n.259A>T		non_coding_transcript_exon_variant	3/8	4
DES	ENST00000492726.1 linkuse as main transcript	n.180A>T		non_coding_transcript_exon_variant	3/6	4
DES	ENST00000683013.1 linkuse as main transcript	n.173A>T		non_coding_transcript_exon_variant	2/7

Frequencies

GnomAD3 genomes

AF:

0.000737

AC:

112

AN:

152050

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00246

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000459

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:

0.00144

GnomAD3 exomes

AF:

0.000181

AC:

AN:

249304

Hom.:

AF XY:

0.000126

AC XY:

AN XY:

134874

show subpopulations

Gnomad AFR exome

AF:

0.00242

Gnomad AMR exome

AF:

0.000174

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:

0.00

GnomAD4 exome

AF:

0.0000787

AC:

115

AN:

1461748

Hom.:

Cov.:

AF XY:

0.0000536

AC XY:

AN XY:

727160

show subpopulations

Gnomad4 AFR exome

AF:

0.00257

Gnomad4 AMR exome

AF:

0.000268

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:

8.99e-7

Gnomad4 OTH exome

AF:

0.000265

GnomAD4 genome

AF:

0.000743

AC:

113

AN:

152168

Hom.:

Cov.:

AF XY:

0.000807

AC XY:

AN XY:

74384

show subpopulations

Gnomad4 AFR

AF:

0.00248

Gnomad4 AMR

AF:

0.000458

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:

0.00142

Alfa

AF:

0.000100

Hom.:

Bravo

AF:

0.000892

ESP6500AA

AF:

0.00136

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000214

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:5Benign:6

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:4Benign:1

Uncertain significance, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Jan 07, 2018	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Athena Diagnostics	Mar 07, 2024	Available data are insufficient to determine the clinical significance of the variant at this time. The frequency of this variant in the general population is higher than would generally be expected for pathogenic variants in this gene. (http://gnomad.broadinstitute.org) Computational tools predict that this variant is damaging. -
Uncertain significance, criteria provided, single submitter	clinical testing	Revvity Omics, Revvity	Sep 13, 2021	- -
Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	May 01, 2024	Identified in patients with DCM in published literature (PMID: 24503780, 37652022); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 26807690, 29926427, 24503780, 37652022) -
Likely benign, no assertion criteria provided	clinical testing	Clinical Genetics, Academic Medical Center	-	- -

not specified

Uncertain:1Benign:1

Benign, no assertion criteria provided	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	-	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	Aug 14, 2016	Variant classified as Uncertain Significance - Favor Benign. The p.Glu262Val var iant in DES has been identified by our laboratory in 3 African American individu als with features of DCM but is also present in 0.2% (25/10192) of African chrom osomes in the Exome Aggregation Consortium database (ExAC, http://exac.broadinst itute.org; dbSNP rs147327878). Computational prediction tools and conservation a nalysis suggest that the p.Glu262Val variant may impact the protein, though this information is not predictive enough to determine pathogenicity. In summary, wh ile the clinical significance of the p.Glu262Val variant is uncertain, its frequ ency suggests that it is more likely to be benign. -

Desmin-related myofibrillar myopathy

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 31, 2024

- -

Cardiomyopathy

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

CHEO Genetics Diagnostic Laboratory, Children's Hospital of Eastern Ontario

Apr 24, 2023

- -

DES-related disorder

Benign:1

Likely benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Apr 06, 2022

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Cardiovascular phenotype

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 27, 2019

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.59

CardioboostCm

Benign

0.063

BayesDel_addAF

Benign

-0.0075

BayesDel_noAF

Pathogenic

0.21

CADD

Pathogenic

DANN

Uncertain

0.99

DEOGEN2

Pathogenic

0.86

Eigen

Pathogenic

0.72

Eigen_PC

Pathogenic

0.67

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Uncertain

0.97

MetaRNN

Benign

0.056

MetaSVM

Uncertain

0.72

MutationAssessor

Pathogenic

3.8

PrimateAI

Uncertain

0.60

PROVEAN

Pathogenic

-5.7

REVEL

Pathogenic

0.85

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0010

Polyphen

0.99

Vest4

0.26

MVP

0.98

MPC

1.5

ClinPred

0.36

GERP RS

4.7

Varity_R

0.91

gMVP

0.77

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.050

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