10-31319237-G-A

Position:

• chr10-31319237-G-A

Variant summary

Our verdict is Pathogenic. Variant got 14 ACMG points: 14P and 0B. PVS1 PS1_Moderate PM2 PP5_Moderate

The NM_001174096.2(ZEB1):​c.3G>A​(p.Met1?) variant causes a start lost 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 Pathogenic (★).

• Frequency: Genomes: not found (cov: 30)
• Consequence: ZEB1 NM_001174096.2 start_lost
• Clinical Significance: Pathogenic criteria provided, single submitter P:2
• Conservation: PhyloP100: 7.79

Genes affected

ZEB1 (HGNC:11642): (zinc finger E-box binding homeobox 1) This gene encodes a zinc finger transcription factor. The encoded protein likely plays a role in transcriptional repression of interleukin 2. Mutations in this gene have been associated with posterior polymorphous corneal dystrophy-3 and late-onset Fuchs endothelial corneal dystrophy. Alternatively spliced transcript variants encoding different isoforms have been described.[provided by RefSeq, Mar 2010]

ZEB1-AS1 (HGNC:42354): (ZEB1 antisense RNA 1) This locus produces long non-coding RNA that is transcribed from a shared bi-directional promoter with zinc finger E-box binding homeobox 1 (ZEB1). This transcript binds lysine methyltransferase 2A and promotes histone modifications that are thought to promote expression of ZEB1. Expression of this gene is correlated with tumor progression. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2017]

ACMG classification

Verdict is Pathogenic. Variant got 14 ACMG points.

• PVS1: Start lost variant, no new inframe start found.
• PS1: Another start lost variant in NM_001174096.2 (ZEB1) was described as [Pathogenic] in ClinVar as 2443790
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 10-31319237-G-A is Pathogenic according to our data. Variant chr10-31319237-G-A is described in ClinVar as [Pathogenic]. Clinvar id is 488897.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ZEB1	NM_001174096.2	c.3G>A	p.Met1?	start_lost	1/9	ENST00000424869.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ZEB1	ENST00000424869.6	c.3G>A	p.Met1?	start_lost	1/9	5	NM_001174096.2	A2
ZEB1-AS1	ENST00000605946.1	n.177+278C>T		intron_variant, non_coding_transcript_variant		5

Frequencies

GnomAD3 genomes Cov.: 30

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 30

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:2

Revision: criteria provided, single submitter

Submissions by phenotype

Posterior polymorphous corneal dystrophy 3;C2750448:Corneal dystrophy, Fuchs endothelial, 6 Pathogenic:1

Likely pathogenic, no assertion criteria provided

clinical testing

Clinical Genetics Laboratory, University Hospital Schleswig-Holstein

May 23, 2023

- -

not provided Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

GeneDx

Apr 20, 2016

The c.3 G>A pathogenic variant in the ZEB1 gene has not been reported previously as a pathogenic variant nor as a benign variant, to our knowledge. The c.3 G>A variant was not observed in approximately 6500 individuals of European and African American ancestry in the NHLBI Exome Sequencing Project, indicating it is not a common benign variant in these populations. As this pathogenic variant changes the translation initiator Methionine codon, the resultant protein is described as p.Met1?, using a question mark to signify that it is not known if the loss of Met1 means that all protein translation is completely prevented or if an abnormal protein is produced using an alternate Methionine. Two other variants in the Met1 position (c.1A>G and c.2T>G) have been reported in the Human Gene Mutation Database in association with posterior polymorphous corneal dystrophy (Stenson et al., 2014). We interpret c.3 G>A as a pathogenic variant. This variant has been seen apparently de novo. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.63	D
BayesDel_noAF	Pathogenic	0.41
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Benign	0.23	T;.;.;T;T;.
Eigen	Uncertain	0.58
Eigen_PC	Uncertain	0.56
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Uncertain	0.90	D;D;D;D;D;D
M_CAP	Pathogenic	0.99	D
MetaRNN	Pathogenic	0.99	D;D;D;D;D;D
MetaSVM	Uncertain	0.40	D
MutationTaster	Benign	1.0	D;D;D;D;D;D;D;D
PROVEAN	Benign	-1.8	N;N;N;N;N;N
REVEL	Pathogenic	0.71
Sift	Pathogenic	0.0	D;D;D;D;D;D
Sift4G	Pathogenic	0.0	D;D;D;D;D;D
Polyphen		0.92	P;.;.;.;.;.
Vest4		0.88
MutPred		0.99		Gain of loop (P = 0.1069);Gain of loop (P = 0.1069);Gain of loop (P = 0.1069);Gain of loop (P = 0.1069);Gain of loop (P = 0.1069);Gain of loop (P = 0.1069);
MVP		0.96
ClinPred		0.99	D
GERP RS		4.1
Varity_R		0.95
gMVP		0.15

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: rs1554797626; hg19: chr10-31608166;