X-70035503-G-C

Position:

• chrX-70035503-G-C

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PS1_Moderate PM2 PP3_Moderate

The NM_001399.5(EDA):​c.1070G>C​(p.Arg357Pro) variant causes a missense change. 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 nucleotide change resulting in same amino acid change has been previously reported as Likely pathogenicin UniProt.

• Frequency: Genomes: not found (cov: 21)
• Consequence: EDA NM_001399.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.94

Genes affected

EDA (HGNC:3157): (ectodysplasin A) The protein encoded by this gene is a type II membrane protein that can be cleaved by furin to produce a secreted form. The encoded protein, which belongs to the tumor necrosis factor family, acts as a homotrimer and may be involved in cell-cell signaling during the development of ectodermal organs. Defects in this gene are a cause of ectodermal dysplasia, anhidrotic, which is also known as X-linked hypohidrotic ectodermal dysplasia. Several transcript variants encoding many different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

• PS1: Transcript NM_001399.5 (EDA) is affected with MISSENSE_VARIANT having same AA change as one Pathogenic present in UniProt
• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.913

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
EDA	NM_001399.5	c.1070G>C	p.Arg357Pro	missense_variant	8/8	ENST00000374552.9	NP_001390.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
EDA	ENST00000374552.9	c.1070G>C	p.Arg357Pro	missense_variant	8/8	1	NM_001399.5	ENSP00000363680	P4
EDA	ENST00000374553.6	c.1064G>C	p.Arg355Pro	missense_variant	8/8	1		ENSP00000363681	A1
EDA	ENST00000524573.5	c.1055G>C	p.Arg352Pro	missense_variant	8/8	1		ENSP00000432585	A1
EDA	ENST00000616899.1	c.674G>C	p.Arg225Pro	missense_variant	7/7	5		ENSP00000481963

Frequencies

GnomAD3 genomes Cov.: 21

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 21

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Jul 26, 2011

Variant classified as Uncertain Significance - Favor Pathogenic. The Arg357Pro v ariant in EDA has been identified in one individual with X-linked hypohidrotic e ctodermal dysplasia and was absent from 60 control chromosomes (Monreal 1998). I n addition, modeling of the structure of the EDA protein shows that this variant clusters on the surface of the protein with several other variants and could af fect binding sites or folding of the protein (Hymowitz, 2003). This variant was identified in one control individual as reported in dbSNP (rs61747506); however, the case was a female so she could represent an unaffected carrier state. In su mmary, the clinical significance cannot be determined with certainty at this tim e; however, we would lean towards a more likely pathogenic effect. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.97
BayesDel_addAF	Pathogenic	0.55	D
BayesDel_noAF	Pathogenic	0.55
CADD	Pathogenic	32
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.74	.;D;.;.
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.97	D;D;D;D
M_CAP	Pathogenic	0.44	D
MetaRNN	Pathogenic	0.91	D;D;D;D
MetaSVM	Pathogenic	0.96	D
MutationAssessor	Benign	0.69	.;N;.;.
MutationTaster	Benign	0.97	D;D;D
PrimateAI	Uncertain	0.74	T
PROVEAN	Benign	-1.4	N;N;N;.
REVEL	Pathogenic	0.76
Sift	Uncertain	0.014	D;.;.;.
Sift4G	Benign	0.12	T;T;T;T
Polyphen		0.97	D;D;D;.
Vest4		0.78
MutPred		0.79		.;Loss of MoRF binding (P = 0.0079);.;.;
MVP		1.0
MPC		1.9
ClinPred		0.92	D
GERP RS		4.5
Varity_R		0.99
gMVP		0.97

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs61747506; hg19: chrX-69255353;