X-31820041-G-A

Position:

chrX-31820041-G-A

Variant summary

Our verdict is Benign. Variant got -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_004021.3(DMD):c.-138C>T variant causes a 5 prime UTR premature start codon gain change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000104 in 1,209,890 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 32 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 0.00045 ( 0 hom., 10 hem., cov: 24)

Exomes 𝑓: 0.000069 ( 0 hom. 22 hem. )

Consequence

DMD
NM_004021.3 5_prime_UTR_premature_start_codon_gain

Scores

Clinical Significance

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

Conservation

PhyloP100: 2.42

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 -13 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.011680812).

BP6

Variant X-31820041-G-A is Benign according to our data. Variant chrX-31820041-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 166702.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=1, Likely_benign=1, Benign=2}.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.000447 (50/111931) while in subpopulation AFR AF= 0.00149 (46/30811). AF 95% confidence interval is 0.00115. There are 0 homozygotes in gnomad4. There are 10 alleles in male gnomad4 subpopulation. Median coverage is 24. This position pass quality control queck.

BS2

High Hemizygotes in GnomAd4 at 10 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DMD	NM_004006.3 link	c.7243C>T	p.Arg2415Cys	missense_variant	50/79	ENST00000357033.9	NP_003997.2	P11532

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DMD	ENST00000357033.9 link	c.7243C>T	p.Arg2415Cys	missense_variant	50/79	1	NM_004006.3	ENSP00000354923.3		A0A075B6G3

Frequencies

GnomAD3 genomes

AF:

0.000438

AC:

AN:

111874

Hom.:

Cov.:

AF XY:

0.000264

AC XY:

AN XY:

34050

show subpopulations

Gnomad AFR

AF:

0.00146

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000949

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000282

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000376

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000213

AC:

AN:

183490

Hom.:

AF XY:

0.000118

AC XY:

AN XY:

67918

show subpopulations

Gnomad AFR exome

AF:

0.00205

Gnomad AMR exome

AF:

0.0000729

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000144

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000976

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000692

AC:

AN:

1097959

Hom.:

Cov.:

AF XY:

0.0000606

AC XY:

AN XY:

363315

show subpopulations

Gnomad4 AFR exome

AF:

0.00174

Gnomad4 AMR exome

AF:

0.0000852

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000331

Gnomad4 SAS exome

AF:

0.0000369

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000190

Gnomad4 OTH exome

AF:

0.000152

GnomAD4 genome

AF:

0.000447

AC:

AN:

111931

Hom.:

Cov.:

AF XY:

0.000293

AC XY:

AN XY:

34117

show subpopulations

Gnomad4 AFR

AF:

0.00149

Gnomad4 AMR

AF:

0.0000948

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000283

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000376

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000433

Hom.:

Bravo

AF:

0.000525

ESP6500AA

AF:

0.00157

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000255

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:4

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:1

Benign, criteria provided, single submitter	clinical testing	GeneDx	Jun 06, 2019	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Apr 29, 2016	- -

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

Benign:1

Likely benign, no assertion criteria provided

clinical testing

Natera, Inc.

Aug 02, 2019

- -

Cardiovascular phenotype

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 29, 2016

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

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 13, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.071

BayesDel_addAF

Benign

-0.58

BayesDel_noAF

Benign

-0.61

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.32

.;.;T;.;.

FATHMM_MKL

Benign

0.46

LIST_S2

Benign

0.67

T;T;.;T;T

M_CAP

Uncertain

0.13

MetaRNN

Benign

0.012

T;T;T;T;T

MetaSVM

Benign

-1.0

PrimateAI

Benign

0.19

PROVEAN

Benign

-1.7

N;.;N;.;N

REVEL

Benign

0.13

Sift

Benign

0.15

T;.;T;.;T

Sift4G

Benign

0.18

T;T;T;T;T

Polyphen

0.0

.;.;B;.;.

Vest4

0.20, 0.14, 0.17, 0.12

MVP

0.42

MPC

0.017

ClinPred

0.022

GERP RS

4.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

gMVP

0.16

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