NM_004006.3:c.5263C>T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4BS2

The NM_004006.3(DMD):c.5263C>T(p.Pro1755Ser) variant causes a missense change. The variant allele was found at a frequency of 0.000024 in 1,208,841 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 9 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. P1755P) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000018 ( 0 hom., 0 hem., cov: 22)

Exomes 𝑓: 0.000025 ( 0 hom. 9 hem. )

Consequence

DMD
NM_004006.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:4

Conservation

PhyloP100: 5.61

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

DMD links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.31386983).

BS2

High AC in GnomAdExome4 at 27 XL,AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DMD	NM_004006.3 link	c.5263C>T	p.Pro1755Ser	missense_variant	Exon 37 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.5263C>T	p.Pro1755Ser	missense_variant	Exon 37 of 79	1	NM_004006.3	ENSP00000354923.3		A0A075B6G3

Frequencies

GnomAD3 genomes

AF:

0.0000181

AC:

AN:

110776

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000657

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

GnomAD4 exome

AF:

0.0000246

AC:

AN:

1098065

Hom.:

Cov.:

AF XY:

0.0000248

AC XY:

AN XY:

363445

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

26398

American (AMR)

AF:

0.00

AC:

AN:

35205

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

19384

East Asian (EAS)

AF:

0.00

AC:

AN:

30199

South Asian (SAS)

AF:

0.00

AC:

AN:

54145

European-Finnish (FIN)

AF:

0.00

AC:

AN:

40532

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4136

European-Non Finnish (NFE)

AF:

0.0000321

AC:

AN:

841977

Other (OTH)

AF:

0.00

AC:

AN:

46089

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.431

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:

0.0000181

AC:

AN:

110776

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

32986

show subpopulations

African (AFR)

AF:

0.0000657

AC:

AN:

30442

American (AMR)

AF:

0.00

AC:

AN:

10308

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

2635

East Asian (EAS)

AF:

0.00

AC:

AN:

3534

South Asian (SAS)

AF:

0.00

AC:

AN:

2607

European-Finnish (FIN)

AF:

0.00

AC:

AN:

5833

Middle Eastern (MID)

AF:

0.00

AC:

AN:

238

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

53007

Other (OTH)

AF:

0.00

AC:

AN:

1493

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.450

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:

0.00

Hom.:

Bravo

AF:

0.0000151

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Duchenne muscular dystrophy;C0878544:Cardiomyopathy;C0917713:Becker muscular dystrophy;na:Dystrophin deficiency

Uncertain:1

Jul 09, 2019

Natera, Inc.

Significance:Uncertain significance

Review Status:no assertion criteria provided

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. -

Cardiovascular phenotype

Uncertain:1

May 28, 2020

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The p.P1755S variant (also known as c.5263C>T), located in coding exon 37 of the DMD gene, results from a C to T substitution at nucleotide position 5263. The proline at codon 1755 is replaced by serine, an amino acid with similar properties. This amino acid position is well conserved in available vertebrate species; however, serine is the reference amino acid in other vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Duchenne muscular dystrophy

Uncertain:1

May 22, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces proline, which is neutral and non-polar, with serine, which is neutral and polar, at codon 1755 of the DMD protein (p.Pro1755Ser). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with DMD-related conditions. ClinVar contains an entry for this variant (Variation ID: 368243). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt DMD protein function with a negative predictive value of 95%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.11

BayesDel_noAF

Benign

-0.40

CADD

Uncertain

(source)

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.37

.;T;.;.

FATHMM_MKL

Uncertain

0.96

LIST_S2

Benign

0.75

T;.;T;T

M_CAP

Benign

0.068

MetaRNN

Benign

0.31

T;T;T;T

MetaSVM

Benign

-0.99

PhyloP100

5.6

PrimateAI

Uncertain

0.50

PROVEAN

Uncertain

-4.0

.;D;.;D

REVEL

Benign

0.093

Sift

Pathogenic

0.0

.;D;.;D

Sift4G

Benign

0.085

T;T;T;T

Polyphen

0.024

.;B;.;.

Vest4

0.46

MutPred

0.26

.;.;Gain of MoRF binding (P = 0.0691);Gain of MoRF binding (P = 0.0691);

MVP

0.65

MPC

0.083

ClinPred

0.99

GERP RS

4.4

gMVP

0.40

Mutation Taster

=93/7

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

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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