Is POLE p.Ile1326Val (c.3976A>G) pathogenic?

POLE p.Ile1326Val (c.3976A>G) is classified Conflicting classifications of pathogenicity in POLE (ClinVar, Conflicting submitters, 2 submitters; last evaluated 2025-04-18). AlphaMissense: likely benign (0.0995); Very rare (popmax 0.005%, amr); Associated with hereditary neoplastic syndrome.

What condition is associated with POLE p.Ile1326Val (c.3976A>G)?

POLE p.Ile1326Val (c.3976A>G) is associated with hereditary neoplastic syndrome (ClinVar).

How common is POLE p.Ile1326Val (c.3976A>G) in the general population?

POLE p.Ile1326Val (c.3976A>G) is very rare (popmax 0.005%, amr) (gnomAD).

What do computational predictors say about POLE p.Ile1326Val (c.3976A>G)?

AlphaMissense predicts likely benign (score 0.0995) — an in-silico prediction, not a clinical call.

POLE p.Ile1326Val

c.3976A>G · rs557996561 · VCV405744

Conflicting classifications of pathogenicity Conflicting submitters

Classification

Conflicting classifications of pathogenicity

ClinVar

Review

Conflicting submitters ★☆☆☆

ClinVar · 2 submitters

AlphaMissense

likely benign

0.0995 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.005%, amr)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

hereditary neoplastic syndrome

Computational evidence

Protein change
AlphaMissense	0.0995	likely benign
REVEL	0.065	moderately benign-leaning
SaProt	LLR -5.58	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -0.17	GERP -3.4, phastCons 0.67
Regional constraint	o/e 0.92	unconstrained · MANE · 36 kb · p 0.001 · regional, not allelic
Overall
CADD	13.48	PHRED · no single calibrated threshold — expert panels disagree

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

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.005% Admixed American · 3/60,014 alleles

Filtering AF 0.00133% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000668%

Overall 0.000248% 4/1,613,566 alleles · very rare exomes 3/1,461,328 · genomes 1/152,238 · joint denominator

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.005%	20,005
European (non-Finnish)	8.47e-05%	1,180,054

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: POLE
Protein: p.Ile1326Val
Coding: c.3976A>G
MANE Select: NM_006231
dbSNP: rs557996561
Type: single nucleotide variant
Location: chr12:132649335 (GRCh38)
Gene constraint: LOEUF 0.75 · pLI <0.01 · ClinGen HI 1/3 (gnomAD)
Structure: AlphaFold pLDDT 80.32 · 18 PDB
Residue 1326: a UniProt-annotated variant site (in imagei)

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

Disease context

hereditary neoplastic syndrome — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

POLE p.Ile1326= Likely benign ★★ same residue
POLE p.Ile1326Leu Uncertain significance ★ ⚠ same residue
POLE p.Ile1326Thr Uncertain significance ★ ⚠ same residue
POLE c.1686+32C>G Pathogenic/Likely pathogenic ★★ same condition
POLE p.Leu424Val Pathogenic ★★ same condition
POLE c.1020+5G>A Uncertain significance ★★ same condition
POLE c.1106+3G>C Uncertain significance ★★ same condition
POLE c.1106+4A>G Uncertain significance ★★ 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/pole-p-ile1326val (accessed [today's date]).

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