2-219420658-TGG-T

Position:

chr2-219420658-TGG-T

Variant summary

Our verdict is Benign. Variant got -16 ACMG points: 0P and 16B. BP6_Very_StrongBS1BS2

The NM_001927.4(DES):c.897+4_897+5del variant causes a splice donor region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00101 in 1,613,966 control chromosomes in the GnomAD database, including 39 homozygotes. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00047 ( 0 hom., cov: 31)

Exomes 𝑓: 0.0011 ( 39 hom. )

Consequence

DES
NM_001927.4 splice_donor_region, intron

Scores

Not classified

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:17

Conservation

PhyloP100: 0.421

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 Benign. Variant got -16 ACMG points.

BP6

Variant 2-219420658-TGG-T is Benign according to our data. Variant chr2-219420658-TGG-T is described in ClinVar as [Likely_benign]. Clinvar id is 44273.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr2-219420658-TGG-T is described in Lovd as [Pathogenic].

BS1

Variant frequency is greater than expected in population sas. gnomad4 allele frequency = 0.000473 (72/152142) while in subpopulation SAS AF= 0.0133 (64/4814). AF 95% confidence interval is 0.0107. There are 0 homozygotes in gnomad4. There are 49 alleles in male gnomad4 subpopulation. Median coverage is 31. This position pass quality control queck.

BS2

High Homozygotes in GnomAdExome4 at 39 SD gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DES	NM_001927.4 linkuse as main transcript	c.897+4_897+5del		splice_donor_region_variant, intron_variant		ENST00000373960.4	NP_001918.3

Ensembl

Gene	Transcript	HGVSc	Effect	TSL	MANE	Protein	Appris
DES	ENST00000373960.4 linkuse as main transcript	c.897+4_897+5del	splice_donor_region_variant, intron_variant	1	NM_001927.4	ENSP00000363071	P1
DES	ENST00000477226.6 linkuse as main transcript	n.371+4_371+5del	splice_donor_region_variant, intron_variant, non_coding_transcript_variant	4
DES	ENST00000492726.1 linkuse as main transcript	n.292+4_292+5del	splice_donor_region_variant, intron_variant, non_coding_transcript_variant	4
DES	ENST00000683013.1 linkuse as main transcript	n.285+4_285+5del	splice_donor_region_variant, intron_variant, non_coding_transcript_variant

Frequencies

GnomAD3 genomes

AF:

0.000480

AC:

AN:

152024

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.000288

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.0135

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000735

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00210

AC:

528

AN:

251216

Hom.:

AF XY:

0.00297

AC XY:

404

AN XY:

135864

show subpopulations

Gnomad AFR exome

AF:

0.0000617

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.000298

Gnomad EAS exome

AF:

0.0000544

Gnomad SAS exome

AF:

0.0165

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000881

Gnomad OTH exome

AF:

0.00130

GnomAD4 exome

AF:

0.00106

AC:

1553

AN:

1461824

Hom.:

AF XY:

0.00160

AC XY:

1162

AN XY:

727208

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.000574

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0161

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000585

Gnomad4 OTH exome

AF:

0.000778

GnomAD4 genome

AF:

0.000473

AC:

AN:

152142

Hom.:

Cov.:

AF XY:

0.000659

AC XY:

AN XY:

74356

show subpopulations

Gnomad4 AFR

AF:

0.0000482

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.000288

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.0133

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000735

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000477

Hom.:

Bravo

AF:

0.000113

Asia WGS

AF:

0.00346

AC:

AN:

3478

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000593

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:17

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:4

Benign, criteria provided, single submitter	clinical testing	Athena Diagnostics	Sep 01, 2020	- -
Likely benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Mar 21, 2017	- -
Benign, criteria provided, single submitter	clinical testing	Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	Mar 19, 2015	c.897+4_897+5delGG in intron 4 of DES: This variant is not expected to have clin ical significance because it has been identified in 1.6% (260/16508) of South As ian chromosomes by the Exome Aggregation Consortium (ExAC, http://exac.broadinst itute.org; dbSNP rs397516699). -
Benign, criteria provided, single submitter	clinical testing	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	Feb 13, 2023	- -

Desmin-related myofibrillar myopathy

Benign:3

Likely benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jun 14, 2016	- -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 17, 2024	- -
Benign, criteria provided, single submitter	clinical testing	Mendelics	May 28, 2019	- -

not provided

Benign:2

Benign, criteria provided, single submitter	clinical testing	GeneDx	Oct 24, 2016	This variant is associated with the following publications: (PMID: 33250842, 27535533, 20474083) -
Benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Jun 01, 2024	DES: BP4, BS1, BS2 -

Dilated cardiomyopathy 1I

Benign:1

Likely benign, criteria provided, single submitter

research

Broad Center for Mendelian Genomics, Broad Institute of MIT and Harvard

The heterozygous c.897+4_897+5delGG variant in DES has been identified in an individual with dilated cardiomyopathy (PMID: 20474083), but has also been identified in >1% of South Asian chromosomes and 4 homozygotes by ExAC (http://gnomad.broadinstitute.org/). In summary, although additional studies are required to fully establish its clinical significance, this variant meets criteria to be classified as likely benign for autosomal dominant dilated cardiomyopathy. -

Myofibrillar Myopathy, Dominant

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

Cardiomyopathy

Benign:1

Benign, criteria provided, single submitter

clinical testing

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

Jul 30, 2018

- -

Dilated Cardiomyopathy, Dominant

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

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

Benign:1

Benign, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Jul 26, 2021

- -

Scapuloperoneal weakness

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

DES-related disorder

Benign:1

Likely benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Jan 30, 2020

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

Benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 13, 2020

This alteration is classified as 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

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.090

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