X-154379507-C-G

Position:

• chrX-154379507-C-G

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM1 PM2 PP3

The NM_000117.3(EMD):​c.23C>G​(p.Ser8Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic 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. S8L) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 26)
• Consequence: EMD NM_000117.3 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 0.913

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 5 ACMG points.

• PM1: In a modified_residue Phosphoserine (size 0) in uniprot entity EMD_HUMAN
• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.82

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
EMD	NM_000117.3	c.23C>G	p.Ser8Trp	missense_variant	1/6	ENST00000369842.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
EMD	ENST00000369842.9	c.23C>G	p.Ser8Trp	missense_variant	1/6	1	NM_000117.3	P1

Frequencies

GnomAD3 genomes Cov.: 26

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 26

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Primary dilated cardiomyopathy Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Blueprint Genetics

Oct 28, 2015

- -

X-linked Emery-Dreifuss muscular dystrophy Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jul 24, 2023

This variant has not been reported in the literature in individuals affected with EMD-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces serine, which is neutral and polar, with tryptophan, which is neutral and slightly polar, at codon 8 of the EMD protein (p.Ser8Trp). ClinVar contains an entry for this variant (Variation ID: 222597). 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. 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. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.90
BayesDel_addAF	Uncertain	0.16	D
BayesDel_noAF	Uncertain	-0.010
CADD	Uncertain	25
DANN	Benign	0.57
DEOGEN2	Uncertain	0.66	D;T
FATHMM_MKL	Benign	0.20	N
LIST_S2	Uncertain	0.86	D;T
M_CAP	Pathogenic	0.96	D
MetaRNN	Pathogenic	0.82	D;D
MetaSVM	Benign	-0.65	T
MutationAssessor	Uncertain	2.5	M;.
MutationTaster	Benign	1.0	N;N
PrimateAI	Pathogenic	0.81	D
PROVEAN	Pathogenic	-5.5	D;D
REVEL	Uncertain	0.40
Sift	Uncertain	0.0010	D;D
Sift4G	Pathogenic	0.0	D;D
Polyphen		1.0	D;.
Vest4		0.53
MutPred		0.67		Loss of disorder (P = 0.0043);Loss of disorder (P = 0.0043);
MVP		0.89
MPC		1.1
ClinPred		1.0	D
GERP RS		4.0
Varity_R		0.88
gMVP		0.89

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

Other links and lift over

dbSNP: rs869025400; hg19: chrX-153607867;