X-32441209-C-T

Variant names:

Variant summary

Our verdict is Benign. Variant got -7 ACMG points: 0P and 7B. BP4_ModerateBP6BS2

The NM_004006.3(DMD):c.3892G>A(p.Gly1298Arg) variant causes a missense change. The variant allele was found at a frequency of 0.0000365 in 1,207,066 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 15 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 0.000081 ( 0 hom., 3 hem., cov: 23)

Exomes 𝑓: 0.000032 ( 0 hom. 12 hem. )

Consequence

DMD
NM_004006.3 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 5.59

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 -7 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.1991274).

BP6

Variant X-32441209-C-T is Benign according to our data. Variant chrX-32441209-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 222546.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Benign=1, Uncertain_significance=2}.

BS2

High Hemizygotes in GnomAd4 at 3 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DMD	NM_004006.3 link	c.3892G>A	p.Gly1298Arg	missense_variant	Exon 28 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.3892G>A	p.Gly1298Arg	missense_variant	Exon 28 of 79	1	NM_004006.3	ENSP00000354923.3		A0A075B6G3

Frequencies

GnomAD3 genomes

AF:

0.0000810

AC:

AN:

111095

Hom.:

Cov.:

AF XY:

0.0000896

AC XY:

AN XY:

33465

show subpopulations

Gnomad AFR

AF:

0.0000977

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000289

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000740

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000190

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000602

AC:

AN:

182693

Hom.:

AF XY:

0.0000889

AC XY:

AN XY:

67459

show subpopulations

Gnomad AFR exome

AF:

0.000152

Gnomad AMR exome

AF:

0.000146

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000105

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000368

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000319

AC:

AN:

1095971

Hom.:

Cov.:

AF XY:

0.0000331

AC XY:

AN XY:

362129

show subpopulations

Gnomad4 AFR exome

AF:

0.0000380

Gnomad4 AMR exome

AF:

0.000114

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000203

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000190

Gnomad4 OTH exome

AF:

0.0000653

GnomAD4 genome

AF:

0.0000810

AC:

AN:

111095

Hom.:

Cov.:

AF XY:

0.0000896

AC XY:

AN XY:

33465

show subpopulations

Gnomad4 AFR

AF:

0.0000977

Gnomad4 AMR

AF:

0.000289

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000740

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000190

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.000155

ExAC

AF:

0.0000824

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.000119

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Apr 06, 2015

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.Gly1298Arg variant in DMD has not been previously reported in individuals with cardiomyopathy, but has been identified in 6/86977 total chromosomes (4 hem izygotes) by the Exome Aggregation Consortium (ExAC, http://exac.broadinstitute. org). Glycine (Gly) at position 1298 is not highly conserved in mammals or evolu tionarily distant species and the Chinese hamster carries an arginine (Arg), rai sing the possibility that this change may be tolerated. Additional computational prediction tools suggest that the p.Gly1298Arg variant may not impact the prote in, though this information is not predictive enough to rule out pathogenicity. In summary, the clinical significance of the p.Gly1298Arg variant is uncertain. -

Primary familial hypertrophic cardiomyopathy

Uncertain:1

Dec 02, 2015

Blueprint Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Cardiovascular phenotype

Benign:1

Oct 14, 2021

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

Sep 26, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: 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

Benign

-0.19

BayesDel_noAF

Benign

-0.25

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.24

.;T;.;.

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Uncertain

0.89

D;.;D;D

M_CAP

Pathogenic

0.70

MetaRNN

Benign

0.20

T;T;T;T

MetaSVM

Benign

-0.88

PrimateAI

Uncertain

0.54

PROVEAN

Benign

-1.2

.;N;.;N

REVEL

Benign

0.16

Sift

Benign

0.18

.;T;.;T

Sift4G

Benign

0.72

T;T;T;T

Polyphen

1.0

.;D;.;.

Vest4

0.33

MutPred

0.34

.;.;Gain of methylation at G1298 (P = 0.073);Gain of methylation at G1298 (P = 0.073);

MVP

0.66

MPC

0.077

ClinPred

0.16

GERP RS

5.3

gMVP

0.28

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