11-32434752-G-C

Variant names:

• chr11-32434752-G-C
• rs2234583
• NM_024426.6:c.609C>G

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_024426.6(WT1):​c.609C>G​(p.Asn203Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,498 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. N203N) has been classified as Benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: WT1 NM_024426.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.877

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 Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
WT1	NM_024426.6	c.609C>G	p.Asn203Lys	missense_variant	Exon 1 of 10	ENST00000452863.10	NP_077744.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
WT1	ENST00000452863.10	c.609C>G	p.Asn203Lys	missense_variant	Exon 1 of 10	1	NM_024426.6	ENSP00000415516.5

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.85e-7 AC: 1 AN: 1460498 Hom.: 0 Cov.: 43 AF XY: 0.00000138 AC XY: 1 AN XY: 726576

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: 8.99e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

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

Oct 19, 2019

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

In summary, this variant is a novel missense change with uncertain impact on protein function. It has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C25"). This variant is not present in population databases (ExAC no frequency) and has not been reported in the literature in individuals with a WT1-related disease. This sequence change replaces asparagine with lysine at codon 198 of the WT1 protein (p.Asn198Lys). The asparagine residue is highly conserved and there is a moderate physicochemical difference between asparagine and lysine. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Benign	-0.018	T
BayesDel_noAF	Benign	-0.26
CADD	Benign	21
DANN	Uncertain	0.98
Eigen	Benign	-0.32
Eigen_PC	Benign	-0.27
FATHMM_MKL	Uncertain	0.96	D
M_CAP	Pathogenic	0.33	D
MetaRNN	Uncertain	0.52	D;D;D;D;D;D
MetaSVM	Benign	-0.42	T
PrimateAI	Pathogenic	0.80	T
PROVEAN	Uncertain	-2.6	D;D;D;.;.;.
REVEL	Uncertain	0.36
Sift	Uncertain	0.0010	D;D;D;.;.;.
Sift4G	Pathogenic	0.0010	D;D;D;.;.;.
Vest4		0.40
MVP		0.61
ClinPred		0.94	D
GERP RS		1.3

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: rs2234583; hg19: chr11-32456298;