dbSNP rs59962885: DES:p.Ala337Thr (chr2-219420939-G-A) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 5P and 4B. PM1PM5PP2BS1

The NM_001927.4(DES):c.1009G>A(p.Ala337Thr) variant causes a missense change. The variant allele was found at a frequency of 0.0000359 in 1,613,398 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A337P) has been classified as Likely pathogenic.

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000035 ( 0 hom. )

Consequence

DES
NM_001927.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:6

Conservation

PhyloP100: 6.20

Publications

20 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: Uncertain_significance. The variant received 1 ACMG points.

PM1

In a hotspot region, there are 5 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 18 uncertain in NM_001927.4

PM5

Other missense variant is known to change same aminoacid residue: Variant chr2-219420939-G-C is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 16820.

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, atrioventricular block, arrhythmogenic right ventricular cardiomyopathy, myofibrillar myopathy 1, dilated cardiomyopathy 1I, neurogenic scapuloperoneal syndrome, Kaeser type, familial isolated dilated cardiomyopathy, dilated cardiomyopathy.

BS1

Variant frequency is greater than expected in population sas. GnomAdExome4 allele frequency = 0.0000349 (51/1461292) while in subpopulation SAS AF = 0.00036 (31/86204). AF 95% confidence interval is 0.00026. There are 0 homozygotes in GnomAdExome4. There are 27 alleles in the male GnomAdExome4 subpopulation. Median coverage is 38. 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.1009G>A	p.Ala337Thr	missense	Exon 5 of 9	NP_001918.3
DES	NM_001382708.1		c.1006G>A	p.Ala336Thr	missense	Exon 5 of 9	NP_001369637.1
DES	NM_001382712.1		c.1009G>A	p.Ala337Thr	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.1009G>A	p.Ala337Thr	missense	Exon 5 of 9	ENSP00000363071.3	P17661
DES	ENST00000942906.1		c.1009G>A	p.Ala337Thr	missense	Exon 5 of 10	ENSP00000612965.1
DES	ENST00000942898.1		c.1009G>A	p.Ala337Thr	missense	Exon 5 of 9	ENSP00000612957.1

Frequencies

GnomAD3 genomes

AF:

0.0000460

AC:

AN:

152106

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000965

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000294

Gnomad OTH

AF:

0.000479

GnomAD2 exomes

AF:

0.0000679

AC:

AN:

250286

AF XY:

0.0000665

show subpopulations

Gnomad AFR exome

AF:

0.000186

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000441

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000349

AC:

AN:

1461292

Hom.:

Cov.:

AF XY:

0.0000371

AC XY:

AN XY:

726926

show subpopulations

African (AFR)

AF:

0.000120

AC:

AN:

33464

American (AMR)

AF:

0.00

AC:

AN:

44688

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39680

South Asian (SAS)

AF:

0.000360

AC:

AN:

86204

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53152

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.0000126

AC:

AN:

1111834

Other (OTH)

AF:

0.0000166

AC:

AN:

60370

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.465

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:

0.0000460

AC:

AN:

152106

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74294

show subpopulations

African (AFR)

AF:

0.0000965

AC:

AN:

41432

American (AMR)

AF:

0.00

AC:

AN:

15270

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5170

South Asian (SAS)

AF:

0.00

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10596

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

68028

Other (OTH)

AF:

0.000479

AC:

AN:

2088

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:

0.0000532

Hom.:

Bravo

AF:

0.0000831

ESP6500AA

AF:

0.000454

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000115

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Cardiovascular phenotype (1)

Desmin-related myofibrillar myopathy (1)

Desmin-related myofibrillar myopathy;C1858154:Dilated cardiomyopathy 1I;C1867005:Neurogenic scapuloperoneal syndrome, Kaeser type (1)

Dilated cardiomyopathy 1I (1)

not provided (1)

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.42

CardioboostCm

Benign

0.019

BayesDel_addAF

Benign

-0.030

BayesDel_noAF

Uncertain

0.020

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.56

Eigen

Uncertain

0.48

Eigen_PC

Uncertain

0.49

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.91

M_CAP

Uncertain

0.19

MetaRNN

Uncertain

0.50

MetaSVM

Pathogenic

0.86

MutationAssessor

Benign

1.9

PhyloP100

6.2

PrimateAI

Uncertain

0.69

PROVEAN

Benign

-2.2

REVEL

Uncertain

0.63

Sift

Benign

0.055

Sift4G

Uncertain

0.060

Polyphen

0.95

Vest4

0.47

MVP

0.98

MPC

1.3

ClinPred

0.47

GERP RS

4.8

Varity_R

0.26

gMVP

0.65

Mutation Taster

=41/59

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