chrX-48528291-A-G

Variant names:

• chrX-48528291-A-G
• rs587783618
• NM_006579.3:c.527A>G

Variant summary

Our verdict is Likely pathogenic. The variant received 9 ACMG points: 9P and 0B. PM1 PM2 PP3_Strong PP5

The NM_006579.3(EBP):​c.527A>G​(p.His176Arg) variant causes a missense change involving the alteration of a 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 Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. H176H) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 22)
• Consequence: EBP NM_006579.3 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:1 U:1
• Conservation: PhyloP100: 8.47
• Publications: 0 publications found

Genes affected

EBP (HGNC:3133): (EBP cholestenol delta-isomerase) The protein encoded by this gene is an integral membrane protein of the endoplasmic reticulum. It is a high affinity binding protein for the antiischemic phenylalkylamine Ca2+ antagonist [3H]emopamil and the photoaffinity label [3H]azidopamil. It is similar to sigma receptors and may be a member of a superfamily of high affinity drug-binding proteins in the endoplasmic reticulum of different tissues. This protein shares structural features with bacterial and eukaryontic drug transporting proteins. It has four putative transmembrane segments and contains two conserved glutamate residues which may be involved in the transport of cationic amphiphilics. Another prominent feature of this protein is its high content of aromatic amino acid residues (>23%) in its transmembrane segments. These aromatic amino acid residues have been suggested to be involved in the drug transport by the P-glycoprotein. Mutations in this gene cause Chondrodysplasia punctata 2 (CDPX2; also known as Conradi-Hunermann syndrome). [provided by RefSeq, Jul 2008]

EBP Gene-Disease associations (from GenCC):

• chondrodysplasia punctata 2, X-linked dominant

  Inheritance: XL Classification: DEFINITIVE Submitted by: Illumina
• MEND syndrome

  Inheritance: XL Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, Genomics England PanelApp, ClinGen
• X-linked chondrodysplasia punctata 2

  Inheritance: XL Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, G2P

ENSG00000286268 (HGNC:):

ACMG classification

Our verdict: Likely_pathogenic. The variant received 9 ACMG points.

• PM1: In a domain EXPERA (size 143) in uniprot entity EBP_HUMAN there are 27 pathogenic changes around while only 10 benign (73%) in NM_006579.3
• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.976
• PP5: Variant X-48528291-A-G is Pathogenic according to our data. Variant chrX-48528291-A-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 158552.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006579.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	EBP	NM_006579.3	MANE Select	c.527A>G	p.His176Arg	missense	Exon 5 of 5	NP_006570.1	Q15125

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	EBP	ENST00000495186.6	TSL:1 MANE Select	c.527A>G	p.His176Arg	missense	Exon 5 of 5	ENSP00000417052.1	Q15125
	ENSG00000286268	ENST00000651615.1		c.469+1006A>G		intron	N/A	ENSP00000498524.1	A0A494C0F3
	EBP	ENST00000882073.1		c.527A>G	p.His176Arg	missense	Exon 6 of 6	ENSP00000552132.1

Frequencies

GnomAD3 genomes Cov.: 22

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 22

Alfa AF: 0.00 Hom.: 0

ClinVar

ClinVar submissions

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
1	-	-	Chondrodysplasia punctata 2 X-linked dominant (1)
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.48
BayesDel_addAF	Pathogenic	0.58	D
BayesDel_noAF	Pathogenic	0.59
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.91	D
FATHMM_MKL	Uncertain	0.95	D
LIST_S2	Benign	0.85	D
M_CAP	Pathogenic	0.97	D
MetaRNN	Pathogenic	0.98	D
MetaSVM	Pathogenic	1.1	D
MutationAssessor	Uncertain	2.3	M
PhyloP100		8.5
PrimateAI	Uncertain	0.66	T
PROVEAN	Pathogenic	-5.3	D
REVEL	Pathogenic	0.94
Sift	Uncertain	0.0050	D
Sift4G	Benign	0.089	T
Polyphen		1.0	D
Vest4		0.60
MutPred		0.83		Gain of solvent accessibility (P = 0.1319)
MVP		0.99
MPC		1.8
ClinPred		0.99	D
GERP RS		5.6
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.93
gMVP		0.90
Mutation Taster		=67/33	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs587783618; hg19: chrX-48386679;