rs28942089

Positions:

• chr11-32392672-G-A
• chr11-32392672-G-C
• chr11-32392672-G-T

Variant summary

Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PM2 PP3_Moderate PP5_Very_Strong

The NM_024426.6(WT1):​c.1348C>T​(p.His450Tyr) 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 Likely pathogenic (★★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: WT1 NM_024426.6 missense
• Clinical Significance: Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:4
• Conservation: PhyloP100: 10.0

Genes affected

WT1 (HGNC:12796): (WT1 transcription factor) This gene encodes a transcription factor that contains four zinc-finger motifs at the C-terminus and a proline/glutamine-rich DNA-binding domain at the N-terminus. It has an essential role in the normal development of the urogenital system, and it is mutated in a small subset of patients with Wilms tumor. This gene exhibits complex tissue-specific and polymorphic imprinting pattern, with biallelic, and monoallelic expression from the maternal and paternal alleles in different tissues. Multiple transcript variants have been described. In several variants, there is evidence for the use of a non-AUG (CUG) translation initiation codon upstream of, and in-frame with the first AUG. Authors of PMID:7926762 also provide evidence that WT1 mRNA undergoes RNA editing in human and rat, and that this process is tissue-restricted and developmentally regulated. [provided by RefSeq, Mar 2015]

ACMG classification

Verdict is Pathogenic. Variant got 12 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.874
• PP5: Variant 11-32392672-G-A is Pathogenic according to our data. Variant chr11-32392672-G-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 3495.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
WT1	NM_024426.6	c.1348C>T	p.His450Tyr	missense_variant	8/10	ENST00000452863.10	NP_077744.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
WT1	ENST00000452863.10	c.1348C>T	p.His450Tyr	missense_variant	8/10	1	NM_024426.6	ENSP00000415516

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:4

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Drash syndrome Pathogenic:2

Likely pathogenic, criteria provided, single submitter	clinical testing	Neuberg Centre For Genomic Medicine, NCGM	-	The missense variant p.H450Y in WT1 (NM_024426.6) chas been reported previously as His377Tyr in an affected patient with Denys Drasch syndrome (Jeanpierre, C et al). The variant has been submitted to ClinVar as Pathogenic but no functional studies have been reported. The p.H450Y variant is novel (not in any individuals) in gnomAD Exomes and is novel (not in any individuals) in 1000 Genomes. The p.H450Y missense variant is predicted to be damaging by both SIFT and PolyPhen2. The histidine residue at codon 450 of WT1 is conserved in all mammalian species. The nucleotide c.1348 in WT1 is predicted conserved by GERP++ and PhyloP across 100 vertebrates. For these reasons, this variant has been classified as Likely Pathogenic. -
Pathogenic, no assertion criteria provided	literature only	OMIM	Apr 01, 1998	- -

11p partial monosomy syndrome;C0950121:Drash syndrome;C0950122:Frasier syndrome;CN033288:Wilms tumor 1 Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 09, 2022

This sequence change replaces histidine, which is basic and polar, with tyrosine, which is neutral and polar, at codon 445 of the WT1 protein (p.His445Tyr). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with clinical features of Denys-Drash syndrome (PMID: 1327525, 9529364). In at least one individual the variant was observed to be de novo. This variant is also known as His377Tyr. ClinVar contains an entry for this variant (Variation ID: 3495). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive. This variant disrupts the p.His445 amino acid residue in WT1. Other variant(s) that disrupt this residue have been observed in individuals with WT1-related conditions (PMID: 20562648, 21851196), which suggests that this may be a clinically significant amino acid residue. For these reasons, this variant has been classified as Pathogenic. -

Nephrotic syndrome, type 4 Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Apr 01, 1998

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.39	D
BayesDel_noAF	Pathogenic	0.32
CADD	Pathogenic	29
DANN	Uncertain	1.0
Eigen	Pathogenic	1.0
Eigen_PC	Pathogenic	0.98
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.92	D;.;D;.;.;.;.;.
M_CAP	Uncertain	0.22	D
MetaRNN	Pathogenic	0.87	D;D;D;D;D;D;D;D
MetaSVM	Uncertain	0.27	D
MutationTaster	Benign	1.0	A;A
PrimateAI	Pathogenic	0.96	D
PROVEAN	Pathogenic	-5.3	D;D;D;D;D;.;.;.
REVEL	Pathogenic	0.70
Sift	Pathogenic	0.0	D;D;D;D;D;.;.;.
Sift4G	Pathogenic	0.0	D;D;D;D;D;.;.;.
Polyphen		1.0	D;.;.;.;.;.;.;.
Vest4		0.93
MVP		0.94
ClinPred		1.0	D
GERP RS		5.7
gMVP		0.98

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: rs28942089; hg19: chr11-32414218;