rs977310228

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 2P and 10B. PM2BP4_ModerateBP6_Very_Strong

The NM_004006.3(DMD):​c.888C>T​(p.Phe296Phe) variant causes a synonymous change. The variant allele was found at a frequency of 0.00000249 in 1,204,593 control chromosomes in the GnomAD database, with no homozygous occurrence. There are no hemizygote samples in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0000091 ( 0 hom., 0 hem., cov: 22)
Exomes 𝑓: 0.0000018 ( 0 hom. 0 hem. )

Consequence

DMD
NM_004006.3 synonymous

Scores

2

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: 4.98

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 -8 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.42).
BP6
Variant X-32697942-G-A is Benign according to our data. Variant chrX-32697942-G-A is described in ClinVar as Likely_benign. ClinVar VariationId is 455942.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
DMDNM_004006.3 linkc.888C>T p.Phe296Phe synonymous_variant Exon 9 of 79 ENST00000357033.9 NP_003997.2 P11532

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
DMDENST00000357033.9 linkc.888C>T p.Phe296Phe synonymous_variant Exon 9 of 79 1 NM_004006.3 ENSP00000354923.3 A0A075B6G3

Frequencies

GnomAD3 genomes
AF:
0.00000907
AC:
1
AN:
110240
Hom.:
0
Cov.:
22
show subpopulations
Gnomad AFR
AF:
0.00
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:
0.0000189
Gnomad OTH
AF:
0.00
GnomAD4 exome
AF:
0.00000183
AC:
2
AN:
1094353
Hom.:
0
Cov.:
30
AF XY:
0.00
AC XY:
0
AN XY:
360167
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
26329
American (AMR)
AF:
0.00
AC:
0
AN:
34837
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
19312
East Asian (EAS)
AF:
0.00
AC:
0
AN:
30084
South Asian (SAS)
AF:
0.00
AC:
0
AN:
53419
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
40328
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
4130
European-Non Finnish (NFE)
AF:
0.00000238
AC:
2
AN:
839939
Other (OTH)
AF:
0.00
AC:
0
AN:
45975
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.425
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
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:
0.00000907
AC:
1
AN:
110240
Hom.:
0
Cov.:
22
AF XY:
0.00
AC XY:
0
AN XY:
32460
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
30236
American (AMR)
AF:
0.00
AC:
0
AN:
10248
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
2630
East Asian (EAS)
AF:
0.00
AC:
0
AN:
3475
South Asian (SAS)
AF:
0.00
AC:
0
AN:
2572
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
5893
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
238
European-Non Finnish (NFE)
AF:
0.0000189
AC:
1
AN:
52776
Other (OTH)
AF:
0.00
AC:
0
AN:
1491
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
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:
0.0000113

ClinVar

Significance: Likely benign
Submissions summary: Benign:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Cardiovascular phenotype Benign:1
Jan 16, 2024
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 23, 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
BayesDel_noAF
Benign
-0.42
CADD
Benign
9.3
DANN
Benign
0.78
PhyloP100
5.0
Mutation Taster
=99/1
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
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: rs977310228; hg19: chrX-32716059; API