rs16998350

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_004006.3(DMD):c.2143A>T(p.Thr715Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00109 in 1,209,230 control chromosomes in the GnomAD database, including 15 homozygotes. There are 355 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 12/16 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Another nucleotide change resulting in same amino acid change has been previously reported as Likely benignin UniProt. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T715P) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0055 ( 7 hom., 175 hem., cov: 23)

Exomes 𝑓: 0.00063 ( 8 hom. 180 hem. )

Consequence

DMD
NM_004006.3 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:13

Conservation

PhyloP100: 0.661

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0054530203).

BP6

Variant X-32545184-T-A is Benign according to our data. Variant chrX-32545184-T-A is described in ClinVar as [Likely_benign]. Clinvar id is 94494.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chrX-32545184-T-A is described in Lovd as [Benign].

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00555 (621/111960) while in subpopulation AFR AF= 0.0194 (597/30852). AF 95% confidence interval is 0.0181. There are 7 homozygotes in gnomad4. There are 175 alleles in male gnomad4 subpopulation. This position pass quality control queck.

BS2

High Homozygotes in GnomAd at 7 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
DMD	NM_004006.3 linkuse as main transcript	c.2143A>T	p.Thr715Ser	missense_variant	17/79	ENST00000357033.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
DMD	ENST00000357033.9 linkuse as main transcript	c.2143A>T	p.Thr715Ser	missense_variant	17/79	1	NM_004006.3	P4

Frequencies

GnomAD3 genomes

AF:

0.00557

AC:

623

AN:

111908

Hom.:

Cov.:

AF XY:

0.00513

AC XY:

175

AN XY:

34092

show subpopulations

Gnomad AFR

AF:

0.0195

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00124

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:

0.0000752

Gnomad OTH

AF:

0.00465

GnomAD3 exomes

AF:

0.00171

AC:

313

AN:

182707

Hom.:

AF XY:

0.00117

AC XY:

AN XY:

67415

show subpopulations

Gnomad AFR exome

AF:

0.0199

Gnomad AMR exome

AF:

0.00139

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000614

Gnomad OTH exome

AF:

0.00178

GnomAD4 exome

AF:

0.000632

AC:

693

AN:

1097270

Hom.:

Cov.:

AF XY:

0.000496

AC XY:

180

AN XY:

362840

show subpopulations

Gnomad4 AFR exome

AF:

0.0196

Gnomad4 AMR exome

AF:

0.00128

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000879

Gnomad4 OTH exome

AF:

0.00122

GnomAD4 genome

AF:

0.00555

AC:

621

AN:

111960

Hom.:

Cov.:

AF XY:

0.00512

AC XY:

175

AN XY:

34154

show subpopulations

Gnomad4 AFR

AF:

0.0194

Gnomad4 AMR

AF:

0.00124

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000752

Gnomad4 OTH

AF:

0.00459

Alfa

AF:

0.000304

Hom.:

Bravo

AF:

0.00635

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ESP6500AA

AF:

0.0149

AC:

ESP6500EA

AF:

0.000149

AC:

ExAC

AF:

0.00183

AC:

222

EpiCase

AF:

0.000273

EpiControl

AF:

0.0000594

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:13

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:6

Benign, criteria provided, single submitter	clinical testing	GeneDx	Sep 23, 2014	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. -
Benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Nov 17, 2014	- -
Benign, criteria provided, single submitter	clinical testing	Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	Jan 13, 2015	p.Thr715Ser in exon 17 of DMD: This variant is not expected to have clinical sig nificance because it has been identified in 1.5% (57/3833) of African American c hromosomes by the NHLBI Exome Sequencing Project (http://evs.gs.washington.edu/E VS/; dbSNP rs16998350). -
Benign, no assertion criteria provided	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	-	- -
Benign, no assertion criteria provided	clinical testing	Genome Diagnostics Laboratory, University Medical Center Utrecht	-	- -
Likely benign, criteria provided, single submitter	clinical testing	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	Aug 19, 2023	- -

not provided

Benign:3

Benign, criteria provided, single submitter	clinical testing	Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics	May 04, 2017	- -
Benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Oct 16, 2023	- -
Likely benign, criteria provided, single submitter	clinical testing	Molecular Diagnostic Laboratory for Inherited Cardiovascular Disease, Montreal Heart Institute	-	- -

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

Benign:1

Likely benign, no assertion criteria provided

clinical testing

Natera, Inc.

Apr 20, 2017

- -

Dilated cardiomyopathy 3B

Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Apr 27, 2017

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. The evidence from the literature, in combination with allele frequency data from public databases where available, was sufficient to rule this variant out of causing disease. Therefore, this variant is classified as benign. -

Cardiovascular phenotype

Benign:1

Benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 02, 2015

This alteration is classified as 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

Benign, criteria provided, single submitter

clinical testing

Invitae

Jan 29, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.70

BayesDel_noAF

Benign

-0.76

Cadd

Benign

Dann

Benign

0.93

FATHMM_MKL

Benign

0.72

LIST_S2

Benign

0.70

T;.;T;T;T

MetaRNN

Benign

0.0055

T;T;T;T;T

MetaSVM

Benign

-1.0

MutationTaster

Benign

1.0

N;N;N

PrimateAI

Benign

0.33

Sift4G

Benign

0.40

T;T;T;T;T

Polyphen

0.0030, 0.012

.;B;.;.;B

Vest4

0.11

MutPred

0.26

.;.;Loss of methylation at K710 (P = 0.0847);Loss of methylation at K710 (P = 0.0847);.;

MVP

0.54

MPC

0.015

ClinPred

0.0034

GERP RS

0.10

gMVP

0.11

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over