X-154379554-G-C

Variant names:

• chrX-154379554-G-C
• NM_000117.3:c.70G>C

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_000117.3(EMD):​c.70G>C​(p.Gly24Arg) variant causes a missense change. The variant allele was found at a frequency of 0.000000947 in 1,056,125 control chromosomes in the GnomAD database, with no homozygous occurrence. There are no hemizygote samples in GnomAD. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 26)
  • Exomes 𝑓: 9.5e-7 (0 hom. 0 hem.)
• Consequence: EMD NM_000117.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.26

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 Likely_pathogenic. Variant got 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.947

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
EMD	NM_000117.3	c.70G>C	p.Gly24Arg	missense_variant	Exon 1 of 6	ENST00000369842.9	NP_000108.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
EMD	ENST00000369842.9	c.70G>C	p.Gly24Arg	missense_variant	Exon 1 of 6	1	NM_000117.3	ENSP00000358857.4

Frequencies

GnomAD3 genomes Cov.: 26

GnomAD4 exome AF: 9.47e-7 AC: 1 AN: 1056125 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 344939

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: 0.00000122

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 26

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

X-linked Emery-Dreifuss muscular dystrophy Uncertain:1

Nov 04, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant has not been reported in the literature in individuals affected with EMD-related conditions. 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. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces glycine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 24 of the EMD protein (p.Gly24Arg). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.97
BayesDel_addAF	Pathogenic	0.56	D
BayesDel_noAF	Pathogenic	0.56
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.69	D;T
FATHMM_MKL	Uncertain	0.90	D
LIST_S2	Uncertain	0.88	D;T
M_CAP	Pathogenic	0.99	D
MetaRNN	Pathogenic	0.95	D;D
MetaSVM	Pathogenic	0.86	D
MutationAssessor	Pathogenic	3.0	M;.
PrimateAI	Pathogenic	0.82	D
PROVEAN	Pathogenic	-7.1	D;D
REVEL	Pathogenic	0.83
Sift	Pathogenic	0.0	D;D
Sift4G	Uncertain	0.0060	D;D
Polyphen		1.0	D;.
Vest4		0.67
MutPred		0.78		Gain of MoRF binding (P = 0.0052);Gain of MoRF binding (P = 0.0052);
MVP		1.0
MPC		1.1
ClinPred		1.0	D
GERP RS		4.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.98
gMVP		0.87

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.13		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chrX-153607914;