NM_001927.4:c.935A>C

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 6P and 9B. PM1PM2PM5BP4_StrongBP6BS1

The NM_001927.4(DES):c.935A>C(p.Asp312Ala) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000208 in 1,613,674 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). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D312N) has been classified as Pathogenic.

Frequency

Genomes: 𝑓 0.00084 ( 0 hom., cov: 31)

Exomes 𝑓: 0.00014 ( 0 hom. )

Consequence

DES
NM_001927.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:4B:5

Conservation

PhyloP100: 9.32

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:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM1

In a region_of_interest Interaction with NEB (size 147) in uniprot entity DESM_HUMAN there are 50 pathogenic changes around while only 2 benign (96%) in NM_001927.4

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr2-219420864-G-A is described in Lovd as [Pathogenic].

BP4

Computational evidence support a benign effect (MetaRNN=0.017068505).

BP6

Variant 2-219420865-A-C is Benign according to our data. Variant chr2-219420865-A-C is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 44275.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=4, Uncertain_significance=4}. Variant chr2-219420865-A-C is described in Lovd as [Likely_benign].

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.000835 (127/152012) while in subpopulation AFR AF= 0.00289 (120/41476). AF 95% confidence interval is 0.00247. There are 0 homozygotes in gnomad4. There are 59 alleles in male gnomad4 subpopulation. Median coverage is 31. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DES	NM_001927.4 link	c.935A>C	p.Asp312Ala	missense_variant	Exon 5 of 9	ENST00000373960.4	NP_001918.3	P17661Q53SB5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
DES	ENST00000373960.4 link	c.935A>C	p.Asp312Ala	missense_variant	Exon 5 of 9	1	NM_001927.4	ENSP00000363071.3	P17661
DES	ENST00000477226.6 link	n.409A>C		non_coding_transcript_exon_variant	Exon 4 of 8	4
DES	ENST00000492726.1 link	n.330A>C		non_coding_transcript_exon_variant	Exon 4 of 6	4
DES	ENST00000683013.1 link	n.323A>C		non_coding_transcript_exon_variant	Exon 3 of 7

Frequencies

GnomAD3 genomes

AF:

0.000830

AC:

126

AN:

151894

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00288

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000328

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000339

AC:

AN:

251070

Hom.:

AF XY:

0.000251

AC XY:

AN XY:

135716

show subpopulations

Gnomad AFR exome

AF:

0.00370

Gnomad AMR exome

AF:

0.000260

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000131

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000880

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.000143

AC:

209

AN:

1461662

Hom.:

Cov.:

AF XY:

0.000144

AC XY:

105

AN XY:

727144

show subpopulations

Gnomad4 AFR exome

AF:

0.00338

Gnomad4 AMR exome

AF:

0.000291

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000928

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000459

Gnomad4 OTH exome

AF:

0.000348

GnomAD4 genome

AF:

0.000835

AC:

127

AN:

152012

Hom.:

Cov.:

AF XY:

0.000794

AC XY:

AN XY:

74276

show subpopulations

Gnomad4 AFR

AF:

0.00289

Gnomad4 AMR

AF:

0.000328

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000196

Hom.:

Bravo

AF:

0.000846

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ESP6500AA

AF:

0.00295

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000387

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.00

EpiControl

AF:

0.000119

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:4Benign:5

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:4

Nov 01, 2022

Revvity Omics, Revvity

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jul 25, 2024

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Identified in individuals with HCM, DCM, or sudden unexplained death in published literature; however, several individuals harbored additional cardiogenetic variants (PMID: 23785128, 24503780, 27930701, 30847666); 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: 24503780, 27930701, 29926427, 17325244, 30847666, 26807690, 23785128, 34935411) -

Nov 13, 2017

Eurofins Ntd Llc (ga)

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Nov 03, 2022

Athena Diagnostics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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. -

not specified

Benign:2

Mar 02, 2012

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

p.Asp312Ala in exon 5 of DES: This variant is not expected to have clinical sign ificance because it has been identified in 0.3% (11/3738) of African American ch romosomes from a broad population by the NHLBI Exome Sequencing Project (http:// evs.gs.washington.edu/EVS; dbSNP rs148947510). -

Dec 27, 2024

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: DES c.935A>C (p.Asp312Ala) results in a non-conservative amino acid change located in the Intermediate filament (IF) rod domain (IPR039008) of the encoded protein sequence. Five of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 0.00034 in 251070 control chromosomes, predominantly at a frequency of 0.0037 within the African or African-American subpopulation in the gnomAD database. The observed variant frequency within African or African-American control individuals in the gnomAD database is approximately 1.5 fold of the estimated maximal expected allele frequency for a pathogenic variant in DES causing Autosomal Recessive Desminopathy phenotype (0.0025). c.935A>C has been reported in the literature in individuals affected with cardiomyopathy or cases of sudden unexplained death without evidence for causality (e.g. Mook_2013, Pugh_2014, Khan_2022, Sahnchez_2016). These report(s) do not provide unequivocal conclusions about association of the variant with Autosomal Recessive Desminopathy. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publications have been ascertained in the context of this evaluation (PMID: 34935411, 23785128, 24503780, 27930701). ClinVar contains an entry for this variant (Variation ID: 44275). Based on the evidence outlined above, the variant was classified as likely benign. -

Desmin-related myofibrillar myopathy

Benign:1

Jan 23, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

DES-related disorder

Benign:1

Sep 20, 2022

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

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

Oct 13, 2020

Ambry Genetics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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

Uncertain

0.54

CardioboostCm

Benign

0.011

BayesDel_addAF

Benign

-0.22

BayesDel_noAF

Benign

-0.10

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.78

Eigen

Uncertain

0.58

Eigen_PC

Uncertain

0.51

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.94

M_CAP

Uncertain

0.12

MetaRNN

Benign

0.017

MetaSVM

Uncertain

0.069

MutationAssessor

Uncertain

2.0

PrimateAI

Pathogenic

0.81

PROVEAN

Pathogenic

-5.0

REVEL

Pathogenic

0.72

Sift

Uncertain

0.0020

Sift4G

Uncertain

0.0070

Polyphen

0.98

Vest4

0.49

MVP

0.91

MPC

1.6

ClinPred

0.080

GERP RS

4.9

Varity_R

0.61

gMVP

0.71

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

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