Genetic Variant DES:p.Asp312Ala (chr2-219420865-A-C) – ACMG Classification: Benign (-8 pts)

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 1P and 9B. PP2BP4_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 Uncertain significance.

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:5B:5

Conservation

PhyloP100: 9.32

Publications

8 publications found

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 Gene-Disease associations (from GenCC):

dilated cardiomyopathy
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
dilated cardiomyopathy 1I
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P
myofibrillar myopathy
Inheritance: SD Classification: DEFINITIVE Submitted by: ClinGen
myofibrillar myopathy 1
Inheritance: SD, AD, AR Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae)
atrioventricular block
Inheritance: AR, AD Classification: STRONG Submitted by: Genomics England PanelApp
arrhythmogenic right ventricular cardiomyopathy
Inheritance: AD Classification: MODERATE Submitted by: ClinGen
familial isolated dilated cardiomyopathy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
neurogenic scapuloperoneal syndrome, Kaeser type
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

DES links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -8 ACMG points.

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 32 curated pathogenic missense variants (we use a threshold of 10). The gene has 2 curated benign missense variants. Gene score misZ: 1.7729 (below the threshold of 3.09). Trascript score misZ: 0.36303 (below the threshold of 3.09). GenCC associations: The gene is linked to myofibrillar myopathy 1, dilated cardiomyopathy 1I, atrioventricular block, arrhythmogenic right ventricular cardiomyopathy, dilated cardiomyopathy, familial isolated dilated cardiomyopathy, neurogenic scapuloperoneal syndrome, Kaeser type.

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 VariationId is 44275.

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 the male GnomAd4 subpopulation. Median coverage is 31. This position passed quality control check.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001927.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
DES	NM_001927.4	MANE Select	c.935A>C	p.Asp312Ala	missense	Exon 5 of 9	NP_001918.3
DES	NM_001382708.1		c.932A>C	p.Asp311Ala	missense	Exon 5 of 9	NP_001369637.1
DES	NM_001382712.1		c.935A>C	p.Asp312Ala	missense	Exon 5 of 9	NP_001369641.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
DES	ENST00000373960.4	TSL:1 MANE Select	c.935A>C	p.Asp312Ala	missense	Exon 5 of 9	ENSP00000363071.3	P17661
DES	ENST00000942906.1		c.935A>C	p.Asp312Ala	missense	Exon 5 of 10	ENSP00000612965.1
DES	ENST00000942898.1		c.935A>C	p.Asp312Ala	missense	Exon 5 of 9	ENSP00000612957.1

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

GnomAD2 exomes

AF:

0.000339

AC:

AN:

251070

AF XY:

0.000251

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 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

African (AFR)

AF:

0.00338

AC:

113

AN:

33480

American (AMR)

AF:

0.000291

AC:

AN:

44718

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000928

AC:

AN:

86250

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53234

Middle Eastern (MID)

AF:

0.000347

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000459

AC:

AN:

1111986

Other (OTH)

AF:

0.000348

AC:

AN:

60390

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.469

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000835

AC:

127

AN:

152012

Hom.:

Cov.:

AF XY:

0.000794

AC XY:

AN XY:

74276

show subpopulations

African (AFR)

AF:

0.00289

AC:

120

AN:

41476

American (AMR)

AF:

0.000328

AC:

AN:

15260

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5144

South Asian (SAS)

AF:

0.00

AC:

AN:

4810

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10568

Middle Eastern (MID)

AF:

0.00340

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

67974

Other (OTH)

AF:

0.00

AC:

AN:

2102

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.511

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000406

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

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (4)

Cardiovascular phenotype (2)

not specified (2)

DES-related disorder (1)

Desmin-related myofibrillar myopathy (1)

Computational scores

Source: dbNSFP v4.9

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

(source)

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

PhyloP100

9.3

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

Mutation Taster

=32/68

disease causing

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over