VCV000660762.10 - ClinVar

NM_001927.4(DES):c.65C>G (p.Pro22Arg)

Germline

Classification

criteria provided, multiple submitters, no conflicts. Learn more about how ClinVar calculates review status.

Uncertain significance
Uncertain significance (3)

3 out of 3 submissions contributed to this classification

The aggregate germline classification for this variant, typically for a monogenic or Mendelian disorder as in the ACMG/AMP guidelines, or for response to a drug. This value is calculated by NCBI based on data from submitters. Read our rules for calculating the aggregate classification.

Somatic

No data submitted for somatic clinical impact

Somatic

No data submitted for oncogenicity

Variant Details

Identifiers

NM_001927.4(DES):c.65C>G (p.Pro22Arg)

Variation ID: 660762 Accession: VCV000660762.10

Type and length

single nucleotide variant, 1 bp

Location

Cytogenetic: 2q35 2: 219418527 (GRCh38) [ NCBI UCSC ] 2: 220283249 (GRCh37) [ NCBI UCSC ]

Timeline in ClinVar

	First in ClinVar Help The date this variant first appeared in ClinVar with each type of classification.	Last submission Help The date of the most recent submission for each type of classification for this variant.	Last evaluated Help The most recent date that a submitter evaluated this variant for each type of classification.
Germline	Aug 14, 2019	Feb 23, 2026	Jan 6, 2026

HGVS

Nucleotide	Protein	Molecular consequence
NM_001927.4:c.65C>G MANE Select Help Transcripts from the Matched Annotation from the NCBI and EMBL-EBI (MANE) collaboration.	NP_001918.3:p.Pro22Arg	missense
NC_000002.12:g.219418527C>G
NC_000002.11:g.220283249C>G
NG_008043.1:g.5151C>G
NG_046330.1:g.18919C>G
LRG_380:g.5151C>G
LRG_380t1:c.65C>G

... more HGVS ... less HGVS

Protein change

P22R

Other names

Canonical SPDI

NC_000002.12:219418526:C:G

Global minor allele frequency (GMAF) Help The global minor allele frequency calculated by the 1000 Genomes Project. The minor allele at this location is indicated in parentheses and may be different from the allele represented by this VCV record.

Allele frequency Help The frequency of the allele represented by this VCV record.

The Genome Aggregation Database (gnomAD) 0.00001

Trans-Omics for Precision Medicine (TOPMed) 0.00001

Exome Aggregation Consortium (ExAC) 0.00004

1000 Genomes Project 30x 0.00016

Links

ClinGen: CA2125012 dbSNP: rs748158450 VarSome

Genes

Gene	OMIM	ClinGen Gene Dosage Sensitivity Curation		Variation Viewer Help Links to Variation Viewer, a genome browser to view variation data from NCBI databases.	Related variants
Gene	OMIM	HI score Help The haploinsufficiency score for the gene, curated by ClinGen’s Dosage Sensitivity Curation task team.	TS score Help The triplosensitivity score for the gene, curated by ClinGen’s Dosage Sensitivity Curation task team.		Within gene Help The number of variants in ClinVar that are contained within this gene, with a link to view the list of variants.	All Help The number of variants in ClinVar for this gene, including smaller variants within the gene and larger CNVs that overlap or fully contain the gene.
DES		-	-	GRCh38 GRCh37	1334	1382

Conditions - Germline

Condition Help The condition for this variant-condition (RCV) record in ClinVar.	Classification Help The aggregate germline classification for this variant-condition (RCV) record in ClinVar. The number of submissions that contribute to this aggregate classification is shown in parentheses. (# of submissions)	Review status Help The aggregate review status for this variant-condition (RCV) record in ClinVar. This value is calculated by NCBI based on data from submitters. Read our rules for calculating the review status.	Last evaluated Help The most recent date that a submitter evaluated this variant for the condition.	Variation/condition record Help The RCV accession number, with most recent version number, for the variant-condition record, with a link to the RCV web page.
Desmin-related myofibrillar myopathy	Uncertain significance (1)	criteria provided, single submitter	Jan 6, 2026	RCV000818028.8
Desmin-related myofibrillar myopathy Dilated cardiomyopathy 1I Neurogenic scapuloperoneal syndrome, Kaeser type	Uncertain significance (1)	criteria provided, single submitter	Jan 17, 2022	RCV002478908.1
Cardiovascular phenotype	Uncertain significance (1)	criteria provided, single submitter	Aug 22, 2024	RCV004994052.1

Submissions - Germline

Classification Help The submitted germline classification for each SCV record. (Last evaluated)	Review status Help Stars represent the review status, or the level of review supporting the submitted (SCV) record. This value is calculated by NCBI based on data from the submitter. Read our rules for calculating the review status. This column also includes a link to the submitter’s assertion criteria if provided, and the collection method. (Assertion criteria)	Condition Help The condition for the classification, provided by the submitter for this submitted (SCV) record. This column also includes the affected status and allele origin of individuals observed with this variant.	Submitter Help The submitting organization for this submitted (SCV) record. This column also includes the SCV accession and version number, the date this SCV first appeared in ClinVar, and the date that this SCV was last updated in ClinVar.	Expand all rows Collapse all rows Help This column includes more information supporting the classification, including citations, the comment on classification, and detailed evidence provided as observations of the variant by the submitter.
Uncertain significance (Jan 17, 2022) C Contributing to aggregate classification	criteria provided, single submitter (ACMG Guidelines, 2015)	Neurogenic scapuloperoneal syndrome, Kaeser type Desmin-related myofibrillar myopathy Dilated cardiomyopathy 1I	Fulgent Genetics, Fulgent Genetics Accession: SCV002790898.1 First in ClinVar: Dec 31, 2022 Last updated: Dec 31, 2022	Observation: 1 Collection method: clinical testing Allele origin: unknown Affected status: unknown Observation 1 Collection method: clinical testing Allele origin: unknown Affected status: unknown

Uncertain significance (Aug 22, 2024) C Contributing to aggregate classification	criteria provided, single submitter (Ambry Variant Classification Scheme 2023)	Cardiovascular phenotype	Ambry Genetics Accession: SCV005565541.1 First in ClinVar: Jan 13, 2025 Last updated: Jan 13, 2025	Publications: PubMed (1) PubMed: 32041989 Comment: show The p.P22R variant (also known as c.65C>G), located in coding exon 1 of the DES gene, results from a C to G substitution at nucleotide position 65. The proline at codon 22 is replaced by arginine, an amino acid with dissimilar properties. This variant has been reported in a dilated cardiomyopathy (DCM) cohort (Zhang XL et al. Sci Rep, 2020 Feb;10:2226). This amino acid position is well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Based on the available evidence, the clinical significance of this variant remains unclear. (less) Observation: 1 Collection method: clinical testing Allele origin: germline Affected status: unknown Observation 1 Collection method: clinical testing Allele origin: germline Affected status: unknown

Uncertain significance (Jan 06, 2026) C Contributing to aggregate classification	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Desmin-related myofibrillar myopathy Desmin-related myofibrillar myopathy Explanation for multiple conditions: Uncertain. The variant was classified for several related diseases, possibly a spectrum of disease; the variant may be associated with one or more the diseases.	Labcorp Genetics (formerly Invitae), Labcorp Accession: SCV000958620.5 First in ClinVar: Aug 14, 2019 Last updated: Feb 23, 2026	Comment: show This sequence change replaces proline, which is neutral and non-polar, with arginine, which is basic and polar, at codon 22 of the DES protein (p.Pro22Arg). This variant is present in population databases (rs748158450, gnomAD 0.03%). This variant has not been reported in the literature in individuals affected with DES-related conditions. ClinVar contains an entry for this variant (Variation ID: 660762). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt DES protein function with a negative predictive value of 80%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. (less) Observation: 1 Collection method: clinical testing Allele origin: germline Affected status: unknown Observation 1 Collection method: clinical testing Allele origin: germline Affected status: unknown

Comment:

The p.P22R variant (also known as c.65C>G), located in coding exon 1 of the DES gene, results from a C to G substitution at nucleotide position 65. The proline at codon 22 is replaced by arginine, an amino acid with dissimilar properties. This variant has been reported in a dilated cardiomyopathy (DCM) cohort (Zhang XL et al. Sci Rep, 2020 Feb;10:2226). This amino acid position is well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Based on the available evidence, the clinical significance of this variant remains unclear.

Comment:

This sequence change replaces proline, which is neutral and non-polar, with arginine, which is basic and polar, at codon 22 of the DES protein (p.Pro22Arg). This variant is present in population databases (rs748158450, gnomAD 0.03%). This variant has not been reported in the literature in individuals affected with DES-related conditions. ClinVar contains an entry for this variant (Variation ID: 660762). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt DES protein function with a negative predictive value of 80%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance.

Citations for germline classification of this variant

Title	Author	Journal	Year	Link
Genetic Basis and Genotype-Phenotype Correlations in Han Chinese Patients with Idiopathic Dilated Cardiomyopathy.	Zhang XL	Scientific reports	2020	PMID: 32041989

Text-mined citations for rs748158450 ...

These citations are identified by LitVar using the rs number, so they may include citations for more than one variant at this location. Please review the LitVar results carefully for your variant of interest.

Record last updated Apr 13, 2026