NM_001927.4:c.12C>G

Variant names:

• chr2-219418474-C-G
• rs762566962
• NM_001927.4:c.12C>G

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Moderate BP6_Moderate BP7

The NM_001927.4(DES):​c.12C>G​(p.Ala4Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★). Synonymous variant affecting the same amino acid position (i.e. A4A) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: DES NM_001927.4 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.909
• 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: 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

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.46).
• BP6: Variant 2-219418474-C-G is Benign according to our data. Variant chr2-219418474-C-G is described in ClinVar as Likely_benign. ClinVar VariationId is 1097857.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=0.909 with no splicing effect.

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

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DES	NM_001927.4	MANE Select	c.12C>G	p.Ala4Ala	synonymous	Exon 1 of 9	NP_001918.3
	DES	NM_001382708.1		c.12C>G	p.Ala4Ala	synonymous	Exon 1 of 9	NP_001369637.1
	DES	NM_001382712.1		c.12C>G	p.Ala4Ala	synonymous	Exon 1 of 9	NP_001369641.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DES	ENST00000373960.4	TSL:1 MANE Select	c.12C>G	p.Ala4Ala	synonymous	Exon 1 of 9	ENSP00000363071.3
	DES	ENST00000942906.1		c.12C>G	p.Ala4Ala	synonymous	Exon 1 of 10	ENSP00000612965.1
	DES	ENST00000942898.1		c.12C>G	p.Ala4Ala	synonymous	Exon 1 of 9	ENSP00000612957.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 33

ClinVar

ClinVar submissions as Germline

Significance: Likely benign

Revision: criteria provided, single submitter

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

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.46
CADD	Benign	16
DANN	Benign	0.89
PhyloP100		0.91
PromoterAI		-0.23	Neutral
Mutation Taster		=95/5	polymorphism

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: rs762566962; hg19: chr2-220283196;