X-33020214-T-C

Variant names:

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBP6BS2

The NM_004006.3(DMD):c.32-14A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000252 in 1,109,479 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 3 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00016 ( 0 hom., 2 hem., cov: 24)

Exomes 𝑓: 0.000010 ( 0 hom. 1 hem. )

Consequence

DMD
NM_004006.3 intron

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:2

Conservation

PhyloP100: -0.620

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

DMD links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -9 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.87).

BP6

Variant X-33020214-T-C is Benign according to our data. Variant chrX-33020214-T-C is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 228585.

BS2

High AC in GnomAd4 at 18 XL,AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004006.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein
DMD	NM_004006.3	MANE Select	c.32-14A>G	intron	N/A	NP_003997.2
DMD	NM_004009.3		c.20-14A>G	intron	N/A	NP_004000.1
DMD	NM_000109.4		c.8-14A>G	intron	N/A	NP_000100.3

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein
DMD	ENST00000357033.9	TSL:1 MANE Select	c.32-14A>G	intron	N/A	ENSP00000354923.3
DMD	ENST00000288447.9	TSL:1	c.8-14A>G	intron	N/A	ENSP00000288447.4
DMD	ENST00000378677.6	TSL:5	c.20-14A>G	intron	N/A	ENSP00000367948.2

Frequencies

GnomAD3 genomes

AF:

0.000161

AC:

AN:

112053

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000583

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:

0.0000566

AC:

AN:

141266

AF XY:

0.0000491

show subpopulations

Gnomad AFR exome

AF:

0.000687

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:

0.0000172

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000100

AC:

AN:

997375

Hom.:

Cov.:

AF XY:

0.00000350

AC XY:

AN XY:

285681

show subpopulations

African (AFR)

AF:

0.000289

AC:

AN:

24221

American (AMR)

AF:

0.00

AC:

AN:

32141

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

18069

East Asian (EAS)

AF:

0.00

AC:

AN:

28985

South Asian (SAS)

AF:

0.00

AC:

AN:

48515

European-Finnish (FIN)

AF:

0.00

AC:

AN:

38817

Middle Eastern (MID)

AF:

0.00

AC:

AN:

3862

European-Non Finnish (NFE)

AF:

0.00000132

AC:

AN:

760329

Other (OTH)

AF:

0.0000471

AC:

AN:

42436

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.447

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

<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:

0.000161

AC:

AN:

112104

Hom.:

Cov.:

AF XY:

0.0000583

AC XY:

AN XY:

34332

show subpopulations

African (AFR)

AF:

0.000582

AC:

AN:

30951

American (AMR)

AF:

0.00

AC:

AN:

10524

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

2648

East Asian (EAS)

AF:

0.00

AC:

AN:

3567

South Asian (SAS)

AF:

0.00

AC:

AN:

2747

European-Finnish (FIN)

AF:

0.00

AC:

AN:

6043

Middle Eastern (MID)

AF:

0.00

AC:

AN:

216

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

53191

Other (OTH)

AF:

0.00

AC:

AN:

1529

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.491

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

<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:

0.0000267

Hom.:

Bravo

AF:

0.000128

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:1Benign:1

Aug 13, 2015

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.32-14A>G variant in DMD has not been previously reported in individuals wi th cardiomyopathy, but has been identified in 4/4564 African chromosomes by the Exome Aggregation Consortium (ExAC, http://exac.broadinstitute.org; dbSNP rs3677 57761). This variant is located in the 3' splice region. Computational tools do not suggest an impact to splicing. However, this information is not predictive e nough to rule out pathogenicity. In summary, the clinical significance of the c. 32-14A>G variant is uncertain.

Jan 05, 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.

Duchenne muscular dystrophy

Benign:1

Oct 23, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.87

CADD

Benign

0.61

(source)

DANN

Benign

0.57

PhyloP100

-0.62

Mutation Taster

=100/0

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over