X-32565806-T-C

Position:

chrX-32565806-T-C

Variant summary

Our verdict is Benign. Variant got -16 ACMG points: 0P and 16B. BP4_StrongBP6_Very_StrongBS2

The NM_004006.3(DMD):c.1888A>G(p.Thr630Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000945 in 1,209,404 control chromosomes in the GnomAD database, including 2 homozygotes. There are 422 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 13/17 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0012 ( 1 hom., 59 hem., cov: 23)

Exomes 𝑓: 0.00092 ( 1 hom. 363 hem. )

Consequence

DMD
NM_004006.3 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:8

Conservation

PhyloP100: 0.501

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 -16 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0073586106).

BP6

Variant X-32565806-T-C is Benign according to our data. Variant chrX-32565806-T-C is described in ClinVar as [Likely_benign]. Clinvar id is 201730.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chrX-32565806-T-C is described in Lovd as [Benign].

BS2

High Hemizygotes in GnomAd4 at 59 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DMD	NM_004006.3 link	c.1888A>G	p.Thr630Ala	missense_variant	16/79	ENST00000357033.9	NP_003997.2	P11532

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DMD	ENST00000357033.9 link	c.1888A>G	p.Thr630Ala	missense_variant	16/79	1	NM_004006.3	ENSP00000354923.3		A0A075B6G3

Frequencies

GnomAD3 genomes

AF:

0.00118

AC:

132

AN:

111911

Hom.:

Cov.:

AF XY:

0.00173

AC XY:

AN XY:

34067

show subpopulations

Gnomad AFR

AF:

0.0000325

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:

0.0156

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000639

Gnomad OTH

AF:

0.00133

GnomAD3 exomes

AF:

0.00159

AC:

291

AN:

183238

Hom.:

AF XY:

0.00179

AC XY:

121

AN XY:

67774

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000419

Gnomad FIN exome

AF:

0.0123

Gnomad NFE exome

AF:

0.000905

Gnomad OTH exome

AF:

0.00266

GnomAD4 exome

AF:

0.000921

AC:

1011

AN:

1097439

Hom.:

Cov.:

AF XY:

0.00100

AC XY:

363

AN XY:

362829

show subpopulations

Gnomad4 AFR exome

AF:

0.0000379

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000499

Gnomad4 FIN exome

AF:

0.0116

Gnomad4 NFE exome

AF:

0.000547

Gnomad4 OTH exome

AF:

0.00104

GnomAD4 genome

AF:

0.00118

AC:

132

AN:

111965

Hom.:

Cov.:

AF XY:

0.00173

AC XY:

AN XY:

34131

show subpopulations

Gnomad4 AFR

AF:

0.0000324

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.0156

Gnomad4 NFE

AF:

0.000639

Gnomad4 OTH

AF:

0.00132

Alfa

AF:

0.000497

Hom.:

Bravo

AF:

0.000321

TwinsUK

AF:

0.00162

AC:

ALSPAC

AF:

0.000692

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000149

AC:

ExAC

AF:

0.00160

AC:

194

EpiCase

AF:

0.000436

EpiControl

AF:

0.00101

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:8

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:2

Benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Nov 21, 2015	- -
Benign, criteria provided, single submitter	clinical testing	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	Nov 23, 2020	Variant summary: DMD c.1888A>G (p.Thr630Ala) results in a non-conservative amino acid change in the encoded protein sequence. Four of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 0.0016 in 183238 control chromosomes. The observed variant frequency is approximately 144 fold of the estimated maximal expected allele frequency for a pathogenic variant in DMD causing Dystrophinopathies phenotype (1.1e-05), strongly suggesting that the variant is benign. Five clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation. All laboratories classified the variant as benign/likely benign. Based on the evidence outlined above, the variant was classified as benign. -

not provided

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Dec 27, 2019	This variant is associated with the following publications: (PMID: 24274981, 19937601) -
Benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Apr 27, 2022	- -

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

Benign:1

Likely benign, no assertion criteria provided

clinical testing

Natera, Inc.

Jun 24, 2019

- -

Dilated cardiomyopathy 3B

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

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 and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -

Cardiovascular phenotype

Benign:1

Benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 10, 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

Labcorp Genetics (formerly Invitae), Labcorp

Jan 31, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.064

BayesDel_addAF

Benign

-0.69

BayesDel_noAF

Benign

-0.79

CADD

Benign

DANN

Benign

0.79

DEOGEN2

Benign

0.24

.;T;.;.;T

FATHMM_MKL

Benign

0.50

LIST_S2

Benign

0.56

T;.;T;T;T

MetaRNN

Benign

0.0074

T;T;T;T;T

MetaSVM

Benign

-0.99

PrimateAI

Benign

0.32

PROVEAN

Benign

-0.49

.;N;.;N;N

REVEL

Benign

0.039

Sift

Benign

1.0

.;T;.;T;T

Sift4G

Benign

0.52

T;T;T;T;T

Polyphen

0.0

.;B;.;.;B

Vest4

0.032

MVP

0.30

MPC

0.016

ClinPred

0.0045

GERP RS

-1.4

gMVP

0.055

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.16

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