Genetic Variant DES:p.Leu66Leu (chr2-219418658-C-T) – ACMG Classification: Likely_benign (-1 pts)

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 2P and 3B. PM2BP4_ModerateBP7

The NM_001927.4(DES):c.196C>T(p.Leu66Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000696 in 1,436,846 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. L66L) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 7.0e-7 ( 0 hom. )

Consequence

DES
NM_001927.4 synonymous

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.0500

Publications

0 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: Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics
myofibrillar myopathy 1
Inheritance: AD, AR, SD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics
atrioventricular block
Inheritance: AD, AR 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: Likely_benign. The variant received -1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.43).

BP7

Synonymous conserved (PhyloP=-0.05 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DES	NM_001927.4 link	c.196C>T	p.Leu66Leu	synonymous_variant	Exon 1 of 9	ENST00000373960.4	NP_001918.3	P17661Q53SB5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DES	ENST00000373960.4 link	c.196C>T	p.Leu66Leu	synonymous_variant	Exon 1 of 9	1	NM_001927.4	ENSP00000363071.3		P17661

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.96e-7

AC:

AN:

1436846

Hom.:

Cov.:

AF XY:

0.00000140

AC XY:

AN XY:

712050

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33144

American (AMR)

AF:

0.00

AC:

AN:

40992

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25534

East Asian (EAS)

AF:

0.0000258

AC:

AN:

38734

South Asian (SAS)

AF:

0.00

AC:

AN:

82972

European-Finnish (FIN)

AF:

0.00

AC:

AN:

50118

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5706

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1100256

Other (OTH)

AF:

0.00

AC:

AN:

59390

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.43

CADD

Benign

(source)

DANN

Benign

0.97

PhyloP100

-0.050

PromoterAI

0.0020

Neutral

(source)

Mutation Taster

=100/0

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over