X-32343198-C-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_ModerateBP6BS2_Supporting

The NM_004006.3(DMD):c.5675G>A(p.Cys1892Tyr) variant causes a missense change. The variant allele was found at a frequency of 0.0000248 in 1,207,834 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 8 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 0.000072 ( 0 hom., 0 hem., cov: 23)

Exomes 𝑓: 0.000020 ( 0 hom. 8 hem. )

Consequence

DMD
NM_004006.3 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 5.07

Publications

3 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: Likely_benign. The variant received -4 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.18473032).

BP6

Variant X-32343198-C-T is Benign according to our data. Variant chrX-32343198-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 201751.

BS2

High AC in GnomAd4 at 8 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
DMD	NM_004006.3 link	c.5675G>A	p.Cys1892Tyr	missense_variant	Exon 40 of 79	ENST00000357033.9	NP_003997.2	P11532

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DMD	ENST00000357033.9 link	c.5675G>A	p.Cys1892Tyr	missense_variant	Exon 40 of 79	1	NM_004006.3	ENSP00000354923.3		A0A075B6G3

Frequencies

GnomAD3 genomes

AF:

0.0000719

AC:

AN:

111242

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000229

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000379

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000219

AC:

AN:

183006

AF XY:

0.0000296

show subpopulations

Gnomad AFR exome

AF:

0.000304

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:

0.0000201

AC:

AN:

1096537

Hom.:

Cov.:

AF XY:

0.0000221

AC XY:

AN XY:

362033

show subpopulations

African (AFR)

AF:

0.000455

AC:

AN:

26357

American (AMR)

AF:

0.00

AC:

AN:

35185

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

19366

East Asian (EAS)

AF:

0.00

AC:

AN:

30151

South Asian (SAS)

AF:

0.00

AC:

AN:

54118

European-Finnish (FIN)

AF:

0.00

AC:

AN:

40517

Middle Eastern (MID)

AF:

0.000242

AC:

AN:

4130

European-Non Finnish (NFE)

AF:

0.00000238

AC:

AN:

840688

Other (OTH)

AF:

0.000152

AC:

AN:

46025

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.464

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:

0.0000719

AC:

AN:

111297

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

33551

show subpopulations

African (AFR)

AF:

0.000228

AC:

AN:

30636

American (AMR)

AF:

0.00

AC:

AN:

10468

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

2638

East Asian (EAS)

AF:

0.00

AC:

AN:

3537

South Asian (SAS)

AF:

0.000380

AC:

AN:

2634

European-Finnish (FIN)

AF:

0.00

AC:

AN:

5967

Middle Eastern (MID)

AF:

0.00

AC:

AN:

217

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

53004

Other (OTH)

AF:

0.00

AC:

AN:

1509

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

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:

0.000239

Hom.:

Bravo

AF:

0.0000642

ESP6500AA

AF:

0.000261

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000247

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:3Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Apr 14, 2025

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Uncertain:1

Nov 03, 2015

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

p.Cys1892Tyr (TGC>TAC): c.5675 G>A in exon 40 of the DMD gene (NM_004006.2). A variant of unknown significance has been identified in the DMD gene. The C1892Y variant has not been published as a mutation or as a benign polymorphism to our knowledge. The C1892Y variant was not observed with any significant frequency in approximately 6,500 individuals of European and African American ancestry in the NHLBI Exome Sequencing Project. The C1892Y variant is a non-conservative amino acid substitution, which is likely to impact secondary protein structure as these residues differ in polarity, charge, size and/or other properties. This substitution occurs at a position that is conserved in mammals. In silico analysis is inconsistent in its predictions as to whether or not the variant is damaging to the protein structure/function. Nevertheless, no missense mutations in nearby residues have been reported in association with DMD-related disorders, indicating this region of the protein may be tolerant of change. Therefore, based on the currently available information, it is unclear whether this variant is a pathogenic mutation or a rare benign variant. The variant is found in CARDIOMYOPATHY panel(s). -

Dystrophin deficiency

Uncertain:1

Sep 16, 2020

Natera, Inc.

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Cardiovascular phenotype

Benign:1

May 31, 2025

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

Feb 03, 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

0.11

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.38

CADD

Benign

(source)

DANN

Benign

0.56

DEOGEN2

Benign

0.21

.;T;.;.;T

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.91

D;.;D;D;D

M_CAP

Pathogenic

0.75

MetaRNN

Benign

0.18

T;T;T;T;T

MetaSVM

Benign

-1.0

PhyloP100

5.1

PrimateAI

Uncertain

0.78

PROVEAN

Benign

-0.40

.;N;.;N;D

REVEL

Benign

0.20

Sift

Benign

1.0

.;T;.;T;T

Sift4G

Benign

1.0

T;T;T;T;T

Polyphen

0.88

.;P;.;.;.

Vest4

0.59

MVP

0.52

MPC

0.058

ClinPred

0.13

GERP RS

6.1

gMVP

0.25

Mutation Taster

=97/3

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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over