rs794727923

chr2-144399310-C-T

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 1P and 2B. PP2 BP4_Moderate

The NM_014795.4(ZEB2):c.1877G>A(p.Gly626Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000103 in 1,461,854 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict 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. G626R) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.000010 (0 hom.)
• Consequence: ZEB2 NM_014795.4 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:3
• Conservation: PhyloP100: 3.03

Genes affected

ZEB2 (HGNC:14881): (zinc finger E-box binding homeobox 2) The protein encoded by this gene is a member of the Zfh1 family of 2-handed zinc finger/homeodomain proteins. It is located in the nucleus and functions as a DNA-binding transcriptional repressor that interacts with activated SMADs. Mutations in this gene are associated with Hirschsprung disease/Mowat-Wilson syndrome. Alternatively spliced transcript variants have been found for this gene.[provided by RefSeq, Jan 2010]

ACMG classification

Verdict is Likely_benign. Variant got -1 ACMG points.

• PP2: Missense variant where missense usually causes diseases, ZEB2
• BP4: Computational evidence support a benign effect (MetaRNN=0.20906323).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ZEB2	NM_014795.4	c.1877G>A	p.Gly626Glu	missense_variant	8/10	ENST00000627532.3
ZEB2	NM_001171653.2	c.1805G>A	p.Gly602Glu	missense_variant	7/9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ZEB2	ENST00000627532.3	c.1877G>A	p.Gly626Glu	missense_variant	8/10	1	NM_014795.4	P4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.0000119 AC: 3 AN: 251060 Hom.: 0 AF XY: 0.00000737 AC XY: 1 AN XY: 135670

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: 0.0000265

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000103 AC: 15 AN: 1461854 Hom.: 0 Cov.: 32 AF XY: 0.0000165 AC XY: 12 AN XY: 727222

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: 0.0000135

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000756

EpiCase AF: 0.00

EpiControl AF: 0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Mowat-Wilson syndrome Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	Nov 07, 2021	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Invitae	Sep 28, 2022	This variant is present in population databases (rs794727923, gnomAD 0.003%). 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 not expected to disrupt ZEB2 protein function. ClinVar contains an entry for this variant (Variation ID: 198863). This variant has not been reported in the literature in individuals affected with ZEB2-related conditions. This sequence change replaces glycine, which is neutral and non-polar, with glutamic acid, which is acidic and polar, at codon 626 of the ZEB2 protein (p.Gly626Glu). -

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Eurofins Ntd Llc (ga)

Jan 12, 2015

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.22
BayesDel_addAF	Benign	-0.17	T
BayesDel_noAF	Benign	-0.42
Cadd	Uncertain	23
Dann	Benign	0.96
DEOGEN2	Benign	0.011	T;T;T;T;T;.;T;T;T;T;.;T;T;T
Eigen	Benign	-0.027
Eigen_PC	Benign	0.17
FATHMM_MKL	Uncertain	0.84	D
M_CAP	Benign	0.0083	T
MetaRNN	Benign	0.21	T;T;T;T;T;T;T;T;T;T;T;T;T;T
MetaSVM	Benign	-1.1	T
MutationTaster	Benign	0.98	D;D;D;D
PrimateAI	Uncertain	0.75	T
Polyphen		0.30, 0.0010	.;.;.;.;.;.;.;B;B;.;.;B;B;.
Vest4		0.20, 0.27, 0.18, 0.27, 0.17
MutPred		0.53		.;.;.;.;.;.;.;Loss of catalytic residue at A625 (P = 0.055);Loss of catalytic residue at A625 (P = 0.055);Loss of catalytic residue at A625 (P = 0.055);.;Loss of catalytic residue at A625 (P = 0.055);.;.;
MVP		0.082
MPC		1.7
ClinPred		0.39	T
GERP RS		4.7
Varity_R		0.084
gMVP		0.71

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: rs794727923; hg19: chr2-145156877;