chr11-32435335-G-C

Position:

• chr11-32435335-G-C

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 0P and 3B. BP4_Moderate BS2_Supporting

The NM_024426.6(WT1):​c.26C>G​(p.Pro9Arg) variant causes a missense change. The variant allele was found at a frequency of 0.00000797 in 1,380,650 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 30)
  • Exomes 𝑓: 0.0000080 (0 hom.)
• Consequence: WT1 NM_024426.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.11

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 Likely_benign. Variant got -3 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.20159772).
• BS2: High AC in GnomAdExome4 at 11 AD gene. Variant has AC lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
WT1	NM_024426.6	c.26C>G	p.Pro9Arg	missense_variant	1/10	ENST00000452863.10	NP_077744.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
WT1	ENST00000452863.10	c.26C>G	p.Pro9Arg	missense_variant	1/10	1	NM_024426.6	ENSP00000415516

Frequencies

GnomAD3 genomes Cov.: 30

GnomAD4 exome AF: 0.00000797 AC: 11 AN: 1380650 Hom.: 0 Cov.: 44 AF XY: 0.00000734 AC XY: 5 AN XY: 681142

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: 0.0000102

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 30

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

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

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Mar 24, 2023

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. An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant  is likely to be tolerated. ClinVar contains an entry for this variant (Variation ID: 569272). This missense change has been observed in individual(s) with gonadal failure (PMID: 30668521). This variant is not present in population databases (gnomAD no frequency). This sequence change replaces proline, which is neutral and non-polar, with arginine, which is basic and polar, at codon 4 of the WT1 protein (p.Pro4Arg). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Benign	-0.21	T
BayesDel_noAF	Benign	-0.54
CADD	Benign	23
DANN	Uncertain	1.0
Eigen	Benign	-0.23
Eigen_PC	Benign	-0.18
FATHMM_MKL	Pathogenic	0.98	D
M_CAP	Uncertain	0.22	D
MetaRNN	Benign	0.20	T;T;T;T;T;T
MetaSVM	Benign	-0.99	T
PrimateAI	Uncertain	0.74	T
PROVEAN	Benign	-0.70	N;N;N;.;.;.
REVEL	Benign	0.088
Sift	Uncertain	0.0010	D;D;D;.;.;.
Sift4G	Pathogenic	0.0	D;D;D;.;.;.
Vest4		0.30
MutPred		0.14		Loss of glycosylation at S6 (P = 0.0477);Loss of glycosylation at S6 (P = 0.0477);Loss of glycosylation at S6 (P = 0.0477);Loss of glycosylation at S6 (P = 0.0477);Loss of glycosylation at S6 (P = 0.0477);Loss of glycosylation at S6 (P = 0.0477);
MVP		0.42
ClinPred		0.89	D
GERP RS		3.0

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: rs948132360; hg19: chr11-32456881;