Is WT1 p.Ser209Arg (c.627C>G) pathogenic?

WT1 p.Ser209Arg (c.627C>G) is classified Uncertain significance in WT1 (ClinVar, Multiple submitters, 2 submitters; last evaluated 2025-02-28). Very rare (popmax 0.00271%, nfe); Associated with Wilms tumor 1.

What condition is associated with WT1 p.Ser209Arg (c.627C>G)?

WT1 p.Ser209Arg (c.627C>G) is associated with Wilms tumor 1, Frasier syndrome, WAGR syndrome (ClinVar).

How common is WT1 p.Ser209Arg (c.627C>G) in the general population?

WT1 p.Ser209Arg (c.627C>G) is very rare (popmax 0.00271%, nfe) (gnomAD).

WT1 p.Ser209Arg

c.627C>G · rs761530541 · VCV1376458

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

gnomAD v4.1

Rare

very rare (popmax 0.00271%, nfe)

Conditions

Wilms tumor 1

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
REVEL	0.36	indeterminate
Splicing
SpliceAI	<0.2	no splice effect predicted · four deltas, not one · how we know
Constraint at this position
Conservation	phyloP 4.9	GERP -0.29, phastCons 1
Regional constraint	o/e 0.93	unconstrained · MANE · 39 kb · p 0.077 · regional, not allelic
Overall
CADD	23.3	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00271% European (non-Finnish) · 32/1,179,970 alleles

Filtering AF 0.00196% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00168%

Overall 0.00198% 32/1,612,912 alleles · very rare exomes 31/1,460,652 · genomes 1/152,260 · joint denominator

Rarity supports pathogenicity (ACMG PM2); frequency above a disease-specific BA1/BS1 threshold argues against it. A variant frequent in one ancestry group can be near-absent in others, so a single global figure can mislead.

Variant & gene context

Gene: WT1
Protein: p.Ser209Arg
Coding: c.627C>G
MANE Select: NM_024426
dbSNP: rs761530541
Type: single nucleotide variant
Location: chr11:32434734 (GRCh38)
Gene constraint: LOEUF 0.253 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 52.09 · 31 PDB

Full WT1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Wilms tumor 1 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: Frasier syndrome WAGR syndrome Denys-Drash syndrome

Similar variants

WT1 p.Ser209= Likely benign ★★ same residue
WT1 c.1354+2T>C Pathogenic/Likely pathogenic ★★ same condition
WT1 c.1447+2T>C Pathogenic ★★ same condition
WT1 c.1447+4C>T Pathogenic/Likely pathogenic ★★ same condition
WT1 c.1447+5G>A Pathogenic/Likely pathogenic ★★ same condition
WT1 c.1448-1G>A Pathogenic/Likely pathogenic ★★ same condition
WT1 p.Arg374Ter Pathogenic ★★ same condition
WT1 p.Arg435Ter Pathogenic ★★ same condition

Built on 18 open, versioned datasets — ClinVar, gnomAD, AlphaMissense, REVEL, ClinGen & more — plus Sugi Variant's own cross-source analysis. Source data 2026-01–2026-10, ClinVar 2026-10. Full sources & versions →

Cite Sugi Variant

Gür T. Sugi Variant: A Deterministic Per-Variant Germline Reference from a Knowledge Graph for Humans and AI Agents. 2026. doi:10.5281/zenodo.21509445. This variant: https://sugi.bio/variant/wt1-p-ser209arg (accessed [today's date]).

Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown