2-219418869-T-C

Variant summary

Our verdict is Pathogenic. Variant got 11 ACMG points: 11P and 0B. PM1PM2PM5PP3_StrongPP5

The NM_001927.4(DES):​c.407T>C​(p.Leu136Pro) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000703 in 1,422,204 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 13/22 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. L136H) has been classified as Likely pathogenic.

Frequency

Genomes: not found (cov: 33)
Exomes 𝑓: 7.0e-7 ( 0 hom. )

Consequence

DES
NM_001927.4 missense

Scores

18
1
1

Clinical Significance

Likely pathogenic no assertion criteria provided P:3

Conservation

PhyloP100: 7.84
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]

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ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 11 ACMG points.

PM1
In a region_of_interest Coil 1A (size 32) in uniprot entity DESM_HUMAN there are 10 pathogenic changes around while only 0 benign (100%) in NM_001927.4
PM2
Very rare variant in population databases, with high coverage;
PM5
Other missense variant is known to change same aminoacid residue: Variant chr2-219418869-T-A is described in Lovd as [Likely_pathogenic].
PP3
MetaRNN computational evidence supports a deleterious effect, 0.993
PP5
Variant 2-219418869-T-C is Pathogenic according to our data. Variant chr2-219418869-T-C is described in ClinVar as [Likely_pathogenic]. Clinvar id is 265811.Status of the report is no_assertion_criteria_provided, 0 stars. Variant chr2-219418869-T-C is described in Lovd as [Pathogenic]. Variant chr2-219418869-T-C is described in Lovd as [Likely_pathogenic].

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
DESNM_001927.4 linkuse as main transcriptc.407T>C p.Leu136Pro missense_variant 1/9 ENST00000373960.4 NP_001918.3 P17661Q53SB5

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
DESENST00000373960.4 linkuse as main transcriptc.407T>C p.Leu136Pro missense_variant 1/91 NM_001927.4 ENSP00000363071.3 P17661

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD4 exome
AF:
7.03e-7
AC:
1
AN:
1422204
Hom.:
0
Cov.:
92
AF XY:
0.00000142
AC XY:
1
AN XY:
703820
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
9.15e-7
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
33

ClinVar

Significance: Likely pathogenic
Submissions summary: Pathogenic:3
Revision: no assertion criteria provided
LINK: link

Submissions by phenotype

not provided Pathogenic:2
Likely pathogenic, no assertion criteria providedclinical testingClinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center-- -
Likely pathogenic, no assertion criteria providedclinical testingGenome Diagnostics Laboratory, University Medical Center Utrecht-- -
Dilated cardiomyopathy 1S Pathogenic:1
Likely pathogenic, no assertion criteria providedclinical testingInstitut für Laboratoriums- und Transfusionsmedizin, Herz- und Diabeteszentrum Nordrhein-WestfalenMay 01, 2016- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
1.0
CardioboostCm
Pathogenic
1.0
BayesDel_addAF
Pathogenic
0.55
D
BayesDel_noAF
Pathogenic
0.55
CADD
Pathogenic
33
DANN
Uncertain
1.0
DEOGEN2
Pathogenic
0.95
D
Eigen
Pathogenic
0.96
Eigen_PC
Pathogenic
0.83
FATHMM_MKL
Pathogenic
0.99
D
LIST_S2
Pathogenic
0.99
D
M_CAP
Pathogenic
0.64
D
MetaRNN
Pathogenic
0.99
D
MetaSVM
Pathogenic
1.1
D
MutationAssessor
Pathogenic
5.0
H
PrimateAI
Pathogenic
0.80
T
PROVEAN
Pathogenic
-6.2
D
REVEL
Pathogenic
0.98
Sift
Pathogenic
0.0
D
Sift4G
Pathogenic
0.0
D
Polyphen
1.0
D
Vest4
0.98
MutPred
0.91
Gain of glycosylation at L136 (P = 0.0279);
MVP
0.98
MPC
2.5
ClinPred
1.0
D
GERP RS
4.7
Varity_R
0.98
gMVP
1.0

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs397516695; hg19: chr2-220283591; API