Is POLE p.Arg21Ser (c.63G>T) pathogenic?

POLE p.Arg21Ser (c.63G>T) is classified Uncertain significance in POLE (ClinVar, Single submitter, 1 submitter; last evaluated 2023-08-02). AlphaMissense: likely benign (0.1698); Absent from gnomAD v4.1.

How common is POLE p.Arg21Ser (c.63G>T) in the general population?

POLE p.Arg21Ser (c.63G>T) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about POLE p.Arg21Ser (c.63G>T)?

AlphaMissense predicts likely benign (score 0.1698) — an in-silico prediction, not a clinical call.

POLE p.Arg21Ser

c.63G>T · rs2136035034 · VCV2796853

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1698 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.1698	likely benign
REVEL	0.153	moderately benign-leaning
SaProt	LLR -5.94	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	Δ0.54	acceptor gain · deltas
Pangolin	Δ0.22	loss · gain 0.14 · SpliceAI calls gain · independent
Constraint at this position
Conservation	phyloP 0.89	GERP -3.1, phastCons 1
Regional constraint	o/e 0.91	unconstrained · MANE · 23 kb · p 0.0025 · regional, not allelic
Overall
CADD	18.7	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean tolerated — a triage signal, not a reclassification

AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.

Population frequency

gnomAD v4.1 · exomes + genomes

Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.

Variant & gene context

Gene: POLE
Protein: p.Arg21Ser
Coding: c.63G>T
MANE Select: NM_006231
dbSNP: rs2136035034
Type: single nucleotide variant
Location: chr12:132681279 (GRCh38)
Gene constraint: LOEUF 0.75 · pLI <0.01 · ClinGen HI 1/3 (gnomAD)
Structure: AlphaFold pLDDT 80.32 · 18 PDB
Residue 21: the 'disordered' region

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

Similar variants

POLE p.Arg21= Conflicting classifications of pathogenicity ★ same residue
POLE c.1686+32C>G Pathogenic/Likely pathogenic ★★ same type
POLE c.3276-1G>C Likely pathogenic ★★ same type
POLE c.5678+1G>T Pathogenic ★★ same type
POLE p.Gln1763Ter Pathogenic/Likely pathogenic ★★ same type
POLE p.Leu424Val Pathogenic ★★ same type
POLE p.Pro436Ser Likely pathogenic ★★ ⚠ same type
POLE c.1020+5G>A Uncertain significance ★★ same type

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/pole-p-arg21ser (accessed [today's date]).

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