rs140791274

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 1P and 5B. PP3BP6BS2

The NM_004006.3(DMD):​c.6151C>T​(p.Arg2051Trp) variant causes a missense change. The variant allele was found at a frequency of 0.0000257 in 1,206,230 control chromosomes in the GnomAD database, including 1 homozygotes. There are 6 hemizygotes in GnomAD. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R2051Q) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000036 ( 1 hom., 0 hem., cov: 22)
Exomes 𝑓: 0.000025 ( 0 hom. 6 hem. )

Consequence

DMD
NM_004006.3 missense

Scores

3
3
8

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:3

Conservation

PhyloP100: 6.83

Publications

1 publications found
Variant links:
Genes affected
DMD (HGNC:2928): (dystrophin) This gene spans a genomic range of greater than 2 Mb and encodes a large protein containing an N-terminal actin-binding domain and multiple spectrin repeats. The encoded protein forms a component of the dystrophin-glycoprotein complex (DGC), which bridges the inner cytoskeleton and the extracellular matrix. Deletions, duplications, and point mutations at this gene locus may cause Duchenne muscular dystrophy (DMD), Becker muscular dystrophy (BMD), or cardiomyopathy. Alternative promoter usage and alternative splicing result in numerous distinct transcript variants and protein isoforms for this gene. [provided by RefSeq, Dec 2016]
DMD Gene-Disease associations (from GenCC):
  • Becker muscular dystrophy
    Inheritance: XL Classification: DEFINITIVE, SUPPORTIVE Submitted by: Ambry Genetics, Orphanet
  • dilated cardiomyopathy 3B
    Inheritance: XL Classification: DEFINITIVE Submitted by: Ambry Genetics
  • Duchenne and Becker muscular dystrophy
    Inheritance: XL Classification: DEFINITIVE Submitted by: Myriad Women’s Health
  • Duchenne muscular dystrophy
    Inheritance: XL Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P, Orphanet
  • progressive muscular dystrophy
    Inheritance: XL Classification: DEFINITIVE Submitted by: ClinGen
  • familial isolated dilated cardiomyopathy
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • non-syndromic X-linked intellectual disability
    Inheritance: XL Classification: SUPPORTIVE Submitted by: Orphanet
  • symptomatic form of muscular dystrophy of Duchenne and Becker in female carriers
    Inheritance: XL Classification: SUPPORTIVE Submitted by: Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

PP3
MetaRNN computational evidence supports a deleterious effect, 0.758
BP6
Variant X-32287668-G-A is Benign according to our data. Variant chrX-32287668-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 380270.
BS2
High AC in GnomAdExome4 at 27 XL,AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
DMDNM_004006.3 linkc.6151C>T p.Arg2051Trp missense_variant Exon 43 of 79 ENST00000357033.9 NP_003997.2

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
DMDENST00000357033.9 linkc.6151C>T p.Arg2051Trp missense_variant Exon 43 of 79 1 NM_004006.3 ENSP00000354923.3

Frequencies

GnomAD3 genomes
AF:
0.0000361
AC:
4
AN:
110798
Hom.:
1
Cov.:
22
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0000969
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000566
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000275
AC:
5
AN:
181816
AF XY:
0.0000300
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000617
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000246
AC:
27
AN:
1095432
Hom.:
0
Cov.:
29
AF XY:
0.0000166
AC XY:
6
AN XY:
360974
show subpopulations
African (AFR)
AF:
0.0000380
AC:
1
AN:
26331
American (AMR)
AF:
0.00
AC:
0
AN:
35154
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
19344
East Asian (EAS)
AF:
0.0000664
AC:
2
AN:
30129
South Asian (SAS)
AF:
0.00
AC:
0
AN:
53834
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
40421
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
4130
European-Non Finnish (NFE)
AF:
0.0000286
AC:
24
AN:
840095
Other (OTH)
AF:
0.00
AC:
0
AN:
45994
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.439
Heterozygous variant carriers
0
2
4
5
7
9
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Exome Hom
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.0000361
AC:
4
AN:
110798
Hom.:
1
Cov.:
22
AF XY:
0.00
AC XY:
0
AN XY:
33038
show subpopulations
⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.
African (AFR)
AF:
0.00
AC:
0
AN:
30514
American (AMR)
AF:
0.0000969
AC:
1
AN:
10325
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
2639
East Asian (EAS)
AF:
0.00
AC:
0
AN:
3554
South Asian (SAS)
AF:
0.00
AC:
0
AN:
2613
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
5771
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
238
European-Non Finnish (NFE)
AF:
0.0000566
AC:
3
AN:
52975
Other (OTH)
AF:
0.00
AC:
0
AN:
1491
⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0.000203476), which strongly suggests a high chance of mosaicism in these individuals.
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.375
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.00
Hom.:
0
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000297
AC:
2
ExAC
AF:
0.0000494
AC:
6

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:2Benign:3
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

not specified Uncertain:1Benign:1
Apr 10, 2023
Women's Health and Genetics/Laboratory Corporation of America, LabCorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

Dec 29, 2016
GeneDx
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease.

Cardiovascular phenotype Uncertain:1
Apr 09, 2025
Molecular Diagnostic Laboratory for Inherited Cardiovascular Disease, Montreal Heart Institute
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

Duchenne muscular dystrophy;C0878544:Cardiomyopathy;C0917713:Becker muscular dystrophy;na:Dystrophin deficiency Benign:1
Jun 16, 2020
Natera, Inc.
Significance:Likely benign
Review Status:no assertion criteria provided
Collection Method:clinical testing

Duchenne muscular dystrophy Benign:1
Nov 19, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.11
BayesDel_addAF
Benign
-0.21
T
BayesDel_noAF
Benign
-0.39
CADD
Uncertain
24
DANN
Uncertain
1.0
DEOGEN2
Benign
0.0
.;T;.;.
LIST_S2
Uncertain
0.90
D;.;D;D
M_CAP
Pathogenic
0.84
D
MetaRNN
Pathogenic
0.76
D;D;D;D
MetaSVM
Benign
-0.74
T
MutationAssessor
Benign
0.0
.;.;.;.
PhyloP100
6.8
PrimateAI
Benign
0.35
T
PROVEAN
Benign
0.0
.;N;.;N
Sift
Pathogenic
0.0
.;D;.;D
Sift4G
Uncertain
0.0060
D;D;D;D
Vest4
0.56
ClinPred
0.38
T
GERP RS
4.4
gMVP
0.17
Mutation Taster
=97/3
polymorphism

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

Other links and lift over

dbSNP: rs140791274; hg19: chrX-32305785; COSMIC: COSV63777537; API