rs765442122

Variant summary

Our verdict is Benign. The variant received -14 ACMG points: 0P and 14B. BP4_StrongBP6_Very_StrongBP7BS2_Supporting

The NM_004006.3(DMD):​c.2910C>T​(p.Thr970Thr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000744 in 1,209,060 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 4 hemizygotes in GnomAD. 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. T970T) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000018 ( 0 hom., 1 hem., cov: 23)
Exomes 𝑓: 0.0000064 ( 0 hom. 3 hem. )

Consequence

DMD
NM_004006.3 synonymous

Scores

2

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: -0.175

Publications

0 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 -14 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.67).
BP6
Variant X-32472203-G-A is Benign according to our data. Variant chrX-32472203-G-A is described in ClinVar as Likely_benign. ClinVar VariationId is 455889.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BP7
Synonymous conserved (PhyloP=-0.175 with no splicing effect.
BS2
High AC in GnomAdExome4 at 7 XL,AD gene. Variant has AC lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
DMDNM_004006.3 linkc.2910C>T p.Thr970Thr synonymous_variant Exon 22 of 79 ENST00000357033.9 NP_003997.2

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
DMDENST00000357033.9 linkc.2910C>T p.Thr970Thr synonymous_variant Exon 22 of 79 1 NM_004006.3 ENSP00000354923.3

Frequencies

GnomAD3 genomes
AF:
0.0000179
AC:
2
AN:
111452
Hom.:
0
Cov.:
23
show subpopulations
Gnomad AFR
AF:
0.0000653
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
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:
0.00
GnomAD2 exomes
AF:
0.0000164
AC:
3
AN:
183172
AF XY:
0.0000148
show subpopulations
Gnomad AFR exome
AF:
0.000228
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:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000638
AC:
7
AN:
1097608
Hom.:
0
Cov.:
30
AF XY:
0.00000826
AC XY:
3
AN XY:
363042
show subpopulations
African (AFR)
AF:
0.0000379
AC:
1
AN:
26378
American (AMR)
AF:
0.00
AC:
0
AN:
35183
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
19375
East Asian (EAS)
AF:
0.00
AC:
0
AN:
30189
South Asian (SAS)
AF:
0.00
AC:
0
AN:
54138
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
40509
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
4132
European-Non Finnish (NFE)
AF:
0.00000475
AC:
4
AN:
841637
Other (OTH)
AF:
0.0000434
AC:
2
AN:
46067
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.438
Heterozygous variant carriers
0
1
1
2
2
3
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:
0.0000179
AC:
2
AN:
111452
Hom.:
0
Cov.:
23
AF XY:
0.0000297
AC XY:
1
AN XY:
33684
show subpopulations
African (AFR)
AF:
0.0000653
AC:
2
AN:
30611
American (AMR)
AF:
0.00
AC:
0
AN:
10440
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
2637
East Asian (EAS)
AF:
0.00
AC:
0
AN:
3551
South Asian (SAS)
AF:
0.00
AC:
0
AN:
2670
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
6045
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
235
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
53095
Other (OTH)
AF:
0.00
AC:
0
AN:
1483
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.525
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
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:
0.00
Hom.:
0
Bravo
AF:
0.0000416

ClinVar

Significance: Likely benign
Submissions summary: Benign:3
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Duchenne muscular dystrophy;C0878544:Cardiomyopathy;C0917713:Becker muscular dystrophy;na:Dystrophin deficiency Benign:1
May 06, 2020
Natera, Inc.
Significance:Likely benign
Review Status:no assertion criteria provided
Collection Method:clinical testing

- -

Duchenne muscular dystrophy Benign:1
Aug 31, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Cardiovascular phenotype Benign:1
Oct 07, 2021
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. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.67
CADD
Benign
0.23
DANN
Benign
0.34
PhyloP100
-0.17
Mutation Taster
=97/3
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.090
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: rs765442122; hg19: chrX-32490320; COSMIC: COSV63790350; API