X-32389610-C-T

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_004006.3(DMD):c.4409G>A(p.Arg1470His) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000157 in 1,208,832 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 12 hemizygotes in GnomAD. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R1470C) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000018 ( 0 hom., 1 hem., cov: 23)

Exomes 𝑓: 0.000015 ( 0 hom. 11 hem. )

Consequence

DMD
NM_004006.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:4B:1

Conservation

PhyloP100: 7.71

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 Likely_benign. Variant got -4 ACMG points.

BS2

High Hemizygotes in GnomAdExome4 at 11 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DMD	NM_004006.3 link	c.4409G>A	p.Arg1470His	missense_variant	Exon 32 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.4409G>A	p.Arg1470His	missense_variant	Exon 32 of 79	1	NM_004006.3	ENSP00000354923.3		A0A075B6G3

Frequencies

GnomAD3 genomes

AF:

0.0000180

AC:

AN:

111405

Hom.:

Cov.:

AF XY:

0.0000297

AC XY:

AN XY:

33641

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000371

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000189

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000547

AC:

AN:

182821

Hom.:

AF XY:

0.0000148

AC XY:

AN XY:

67513

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:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000123

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000155

AC:

AN:

1097427

Hom.:

Cov.:

AF XY:

0.0000303

AC XY:

AN XY:

362993

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

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:

0.0000166

Gnomad4 OTH exome

AF:

0.0000651

GnomAD4 genome

AF:

0.0000180

AC:

AN:

111405

Hom.:

Cov.:

AF XY:

0.0000297

AC XY:

AN XY:

33641

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000371

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000189

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000378

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:4Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:2

Feb 07, 2023

Revvity Omics, Revvity

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Nov 10, 2017

Athena Diagnostics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

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

Uncertain:1

Sep 20, 2018

Natera, Inc.

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Cardiovascular phenotype

Uncertain:1

Mar 12, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.R1470H variant (also known as c.4409G>A), located in coding exon 32 of the DMD gene, results from a G to A substitution at nucleotide position 4409. The arginine at codon 1470 is replaced by histidine, an amino acid with highly similar properties. Based on data from gnomAD, the A allele has an overall frequency of <0.01% (1/182821) total alleles studied, with 1 hemizygote(s) observed. The highest observed frequency was <0.01% (1/81465) of European (non-Finnish) alleles. This amino acid position is highly conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Based on the available evidence, the clinical significance of this alteration remains unclear. -

Duchenne muscular dystrophy

Benign:1

Nov 24, 2024

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

0.14

BayesDel_addAF

Uncertain

0.099

BayesDel_noAF

Benign

-0.10

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.45

.;T;.;.

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.96

D;.;D;D

M_CAP

Pathogenic

0.71

MetaRNN

Uncertain

0.69

D;D;D;D

MetaSVM

Benign

-0.80

PrimateAI

Uncertain

0.64

PROVEAN

Uncertain

-3.7

.;D;.;D

REVEL

Uncertain

0.37

Sift

Uncertain

0.0020

.;D;.;D

Sift4G

Uncertain

0.0020

D;D;D;D

Polyphen

1.0

.;D;.;.

Vest4

0.71

MVP

0.74

MPC

0.11

ClinPred

0.97

GERP RS

5.6

gMVP

0.55

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