rs116283249

Variant summary

Our verdict is Benign. The variant received -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_004006.3(DMD):​c.8767G>T​(p.Ala2923Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000901 in 1,209,271 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 28 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 14/19 in silico tools predict a benign 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. A2923T) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00052 ( 0 hom., 12 hem., cov: 22)
Exomes 𝑓: 0.000046 ( 0 hom. 16 hem. )

Consequence

DMD
NM_004006.3 missense

Scores

1
15

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:6

Conservation

PhyloP100: 1.64

Publications

2 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: Benign. The variant received -13 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.008227587).
BP6
Variant X-31478276-C-A is Benign according to our data. Variant chrX-31478276-C-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 94816.
BS1
Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.000522 (58/111085) while in subpopulation AFR AF = 0.00173 (53/30598). AF 95% confidence interval is 0.00136. There are 0 homozygotes in GnomAd4. There are 12 alleles in the male GnomAd4 subpopulation. Median coverage is 22. This position passed quality control check.
BS2
High AC in GnomAd4 at 58 XL,AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
DMDNM_004006.3 linkc.8767G>T p.Ala2923Ser missense_variant Exon 59 of 79 ENST00000357033.9 NP_003997.2 P11532

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
DMDENST00000357033.9 linkc.8767G>T p.Ala2923Ser missense_variant Exon 59 of 79 1 NM_004006.3 ENSP00000354923.3 A0A075B6G3

Frequencies

GnomAD3 genomes
AF:
0.000531
AC:
59
AN:
111033
Hom.:
0
Cov.:
22
show subpopulations
Gnomad AFR
AF:
0.00177
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000289
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:
0.00
Gnomad OTH
AF:
0.00134
GnomAD2 exomes
AF:
0.0000873
AC:
16
AN:
183301
AF XY:
0.0000590
show subpopulations
Gnomad AFR exome
AF:
0.00114
Gnomad AMR exome
AF:
0.0000365
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000464
AC:
51
AN:
1098186
Hom.:
0
Cov.:
34
AF XY:
0.0000440
AC XY:
16
AN XY:
363542
show subpopulations
African (AFR)
AF:
0.00159
AC:
42
AN:
26401
American (AMR)
AF:
0.000114
AC:
4
AN:
35204
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
19386
East Asian (EAS)
AF:
0.00
AC:
0
AN:
30206
South Asian (SAS)
AF:
0.00
AC:
0
AN:
54144
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
40529
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
4136
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
842088
Other (OTH)
AF:
0.000108
AC:
5
AN:
46092
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.449
Heterozygous variant carriers
0
3
5
8
10
13
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Exome Hom
Variant carriers
0
4
8
12
16
20
<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:
0.000522
AC:
58
AN:
111085
Hom.:
0
Cov.:
22
AF XY:
0.000360
AC XY:
12
AN XY:
33295
show subpopulations
African (AFR)
AF:
0.00173
AC:
53
AN:
30598
American (AMR)
AF:
0.000289
AC:
3
AN:
10387
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
2643
East Asian (EAS)
AF:
0.00
AC:
0
AN:
3542
South Asian (SAS)
AF:
0.00
AC:
0
AN:
2582
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
5934
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
215
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
52990
Other (OTH)
AF:
0.00132
AC:
2
AN:
1510
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.520
Heterozygous variant carriers
0
3
5
8
10
13
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Genome 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
Alfa
AF:
0.000175
Hom.:
4
Bravo
AF:
0.000684
ESP6500AA
AF:
0.00209
AC:
8
ESP6500EA
AF:
0.00
AC:
0
ExAC
AF:
0.000148
AC:
18

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:2Benign:6
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

not provided Uncertain:1Benign:1
Jun 01, 2018
Eurofins Ntd Llc (ga)
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Aug 26, 2020
GeneDx
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Dilated cardiomyopathy 3B Uncertain:1
Jan 12, 2018
Illumina Laboratory Services, Illumina
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

not specified Benign:1
Apr 09, 2025
Molecular Diagnostic Laboratory for Inherited Cardiovascular Disease, Montreal Heart Institute
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Duchenne muscular dystrophy;C0878544:Cardiomyopathy;C0917713:Becker muscular dystrophy;na:Dystrophin deficiency Benign:1
Aug 02, 2019
Natera, Inc.
Significance:Likely benign
Review Status:no assertion criteria provided
Collection Method:clinical testing

- -

DMD-related disorder Benign:1
Jul 15, 2022
PreventionGenetics, part of Exact Sciences
Significance:Likely benign
Review Status:no assertion criteria provided
Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Cardiovascular phenotype Benign:1
Oct 19, 2017
Ambry Genetics
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Duchenne muscular dystrophy Benign:1
Jan 30, 2025
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
0.081
BayesDel_addAF
Benign
-0.62
T
BayesDel_noAF
Benign
-0.71
CADD
Benign
1.5
DANN
Benign
0.35
DEOGEN2
Benign
0.22
.;T;T;T;.;.;T;.;.;T
FATHMM_MKL
Uncertain
0.77
D
LIST_S2
Benign
0.85
D;.;.;.;.;T;.;T;T;.
M_CAP
Benign
0.015
T
MetaRNN
Benign
0.0082
T;T;T;T;T;T;T;T;T;T
MetaSVM
Benign
-1.0
T
PhyloP100
1.6
PrimateAI
Benign
0.30
T
PROVEAN
Benign
0.26
N;.;N;N;N;.;N;.;N;N
REVEL
Benign
0.043
Sift
Benign
0.78
T;.;T;T;T;.;T;.;T;T
Sift4G
Benign
0.77
T;T;T;T;T;T;T;T;T;T
Polyphen
0.0, 0.17, 0.10
.;.;B;B;B;.;B;.;.;B
Vest4
0.33, 0.34, 0.34, 0.33, 0.34, 0.30, 0.35, 0.34
MVP
0.57
MPC
0.067
ClinPred
0.018
T
GERP RS
0.52
gMVP
0.11
Mutation Taster
=100/0
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.030
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: rs116283249; hg19: chrX-31496393; API