rs1553603440

Variant names:

• chr2-219420526-A-G
• rs1553603440
• NM_001927.4:c.767A>G

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 1P and 0B. PP2

The NM_001927.4(DES):​c.767A>G​(p.Glu256Gly) variant causes a missense change. The variant allele was found at a frequency of 0.0000205 in 1,461,762 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. E256E) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.000021 (0 hom.)
• Consequence: DES NM_001927.4 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 5.34
• Publications: 0 publications found

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

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 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.

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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DES	NM_001927.4	MANE Select	c.767A>G	p.Glu256Gly	missense	Exon 4 of 9	NP_001918.3
	DES	NM_001382708.1		c.764A>G	p.Glu255Gly	missense	Exon 4 of 9	NP_001369637.1
	DES	NM_001382712.1		c.767A>G	p.Glu256Gly	missense	Exon 4 of 9	NP_001369641.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DES	ENST00000373960.4	TSL:1 MANE Select	c.767A>G	p.Glu256Gly	missense	Exon 4 of 9	ENSP00000363071.3	P17661
	DES	ENST00000942906.1		c.767A>G	p.Glu256Gly	missense	Exon 4 of 10	ENSP00000612965.1
	DES	ENST00000942898.1		c.767A>G	p.Glu256Gly	missense	Exon 4 of 9	ENSP00000612957.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.0000205 AC: 30 AN: 1461762 Hom.: 0 Cov.: 35 AF XY: 0.0000179 AC XY: 13 AN XY: 727174

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86256

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53300

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.0000270 AC: 30 AN: 1112004

Other (OTH) AF: 0.00 AC: 0 AN: 60394

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	1	-	Cardiovascular phenotype (1)
-	1	-	Desmin-related myofibrillar myopathy (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.13
CardioboostCm	Benign	0.0010
BayesDel_addAF	Pathogenic	0.28	D
BayesDel_noAF	Pathogenic	0.16
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.70	D
Eigen	Uncertain	0.43
Eigen_PC	Uncertain	0.47
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.84	T
M_CAP	Uncertain	0.26	D
MetaRNN	Uncertain	0.48	T
MetaSVM	Uncertain	0.71	D
MutationAssessor	Benign	0.47	N
PhyloP100		5.3
PrimateAI	Uncertain	0.55	T
PROVEAN	Uncertain	-3.2	D
REVEL	Pathogenic	0.82
Sift	Benign	0.10	T
Sift4G	Benign	0.20	T
Polyphen		0.88	P
Vest4		0.39
MutPred		0.53		Loss of disorder (P = 0.0905)
MVP		0.98
MPC		0.73
ClinPred		0.94	D
GERP RS		4.7
Varity_R		0.30
gMVP		0.54
Mutation Taster		=6/94	disease causing

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

Other links and lift over

dbSNP: rs1553603440; hg19: chr2-220285248;