X-154381042-C-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_000117.3(EMD):c.610C>T(p.Arg204Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000014 in 1,210,803 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 1 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R204G) has been classified as Uncertain significance.

Frequency

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

Exomes 𝑓: 0.000014 ( 0 hom. 1 hem. )

Consequence

EMD
NM_000117.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:4

Conservation

PhyloP100: 1.09

Variant links:

Genes affected

EMD (HGNC:3331): (emerin) Emerin is a serine-rich nuclear membrane protein and a member of the nuclear lamina-associated protein family. It mediates membrane anchorage to the cytoskeleton. Dreifuss-Emery muscular dystrophy is an X-linked inherited degenerative myopathy resulting from mutation in the emerin gene. [provided by RefSeq, Jul 2008]

EMD links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.21084535).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
EMD	NM_000117.3 linkuse as main transcript	c.610C>T	p.Arg204Cys	missense_variant	6/6	ENST00000369842.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
EMD	ENST00000369842.9 linkuse as main transcript	c.610C>T	p.Arg204Cys	missense_variant	6/6	1	NM_000117.3	P1

Frequencies

GnomAD3 genomes

AF:

0.0000177

AC:

AN:

112733

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

34881

show subpopulations

Gnomad AFR

AF:

0.0000322

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:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000188

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000218

AC:

AN:

183163

Hom.:

AF XY:

0.0000148

AC XY:

AN XY:

67789

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:

0.0000367

Gnomad OTH exome

AF:

0.000221

GnomAD4 exome

AF:

0.0000137

AC:

AN:

1098070

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

363492

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:

0.0000369

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000142

Gnomad4 OTH exome

AF:

0.0000217

GnomAD4 genome

AF:

0.0000177

AC:

AN:

112733

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

34881

show subpopulations

Gnomad4 AFR

AF:

0.0000322

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000188

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000189

ExAC

AF:

0.0000247

AC:

EpiCase

AF:

0.000164

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Emery-Dreifuss muscular dystrophy

Uncertain:1

Uncertain significance, no assertion criteria provided

clinical testing

Natera, Inc.

Sep 16, 2020

- -

Emery-Dreifuss muscular dystrophy 1, X-linked

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Revvity Omics, Revvity

Jul 13, 2021

- -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Dec 10, 2012

p.Arg204Cys c.610 CGT>TGT in exon 6 of the EMD gene (NM_000117.2): The Arg204Cys variant in the EMD gene has not been reported as a disease-causing mutation or as a benign polymorphism to our knowledge. The NHLBI ESP Exome Variant Server reports Arg204Cys was not observed in approximately 6,300 samples from individuals of European and African American backgrounds, indicating it is not a common benign variant in these populations. Arg204Cys results in a semi-conservative amino acid substitution of a positively charged Arginine residue with a neutral, polar Cystein residue, which might affect disulfide bonds. In silico analysis predicts Arg204Cys is probably damaging to the protein structure/function. Nevertheless, the Arg204 residue is not well conserved, as a Cysteine residue is present at this position in horse. Also, no missense mutations in nearby codons have been reported in association with EDMD. With the clinical and molecular information available at this time, we cannot definitively determine if Arg204Cys is a disease-causing mutation or a rare benign variant. The variant is found in DCM panel(s). -

X-linked Emery-Dreifuss muscular dystrophy

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Jun 30, 2023

This sequence change replaces arginine, which is basic and polar, with cysteine, which is neutral and slightly polar, at codon 204 of the EMD protein (p.Arg204Cys). This variant is present in population databases (rs782299893, gnomAD 0.005%), including at least one homozygous and/or hemizygous individual. This variant has not been reported in the literature in individuals affected with EMD-related conditions. ClinVar contains an entry for this variant (Variation ID: 201776). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt EMD protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.34

BayesDel_addAF

Benign

-0.060

BayesDel_noAF

Benign

-0.21

Cadd

Benign

Dann

Uncertain

0.99

DEOGEN2

Pathogenic

0.87

D;T

FATHMM_MKL

Benign

0.45

LIST_S2

Benign

0.82

T;T

M_CAP

Benign

0.085

MetaRNN

Benign

0.21

T;T

MetaSVM

Benign

-0.33

MutationAssessor

Benign

1.2

L;.

MutationTaster

Benign

0.78

D;D

PrimateAI

Uncertain

0.53

PROVEAN

Uncertain

-2.7

D;D

REVEL

Benign

0.19

Sift

Uncertain

0.0020

D;D

Sift4G

Pathogenic

0.0

D;D

Polyphen

0.029

B;.

Vest4

0.30

MutPred

0.53

Loss of MoRF binding (P = 0.0085);.;

MVP

0.77

MPC

0.38

ClinPred

0.19

GERP RS

2.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.21

gMVP

0.60

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