Is AXIN2 p.Pro674Ser (c.2020C>T) pathogenic?

AXIN2 p.Pro674Ser (c.2020C>T) is classified Uncertain significance in AXIN2 (ClinVar, Multiple submitters, 2 submitters; last evaluated 2025-07-09). AlphaMissense: likely benign (0.0661); Absent from gnomAD v4.1; Associated with hereditary neoplastic syndrome.

What condition is associated with AXIN2 p.Pro674Ser (c.2020C>T)?

AXIN2 p.Pro674Ser (c.2020C>T) is associated with hereditary neoplastic syndrome, oligodontia-cancer predisposition syndrome (ClinVar).

How common is AXIN2 p.Pro674Ser (c.2020C>T) in the general population?

AXIN2 p.Pro674Ser (c.2020C>T) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about AXIN2 p.Pro674Ser (c.2020C>T)?

AlphaMissense predicts likely benign (score 0.0661) — an in-silico prediction, not a clinical call.

AXIN2 p.Pro674Ser

c.2020C>T · rs1567754214 · VCV568857

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

AlphaMissense

likely benign

0.0661 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

hereditary neoplastic syndrome

Computational evidence

Protein change
AlphaMissense	0.0661	likely benign
REVEL	0.028	moderately benign-leaning
SaProt	LLR -6.78	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 -0.01	GERP -2.5
Regional constraint	o/e 1.08	unconstrained · MANE · 25 kb · p 0.011 · regional, not allelic
Overall
CADD	3.15	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: AXIN2
Protein: p.Pro674Ser
Coding: c.2020C>T
MANE Select: NM_004655
dbSNP: rs1567754214
Type: single nucleotide variant
Location: chr17:65536441 (GRCh38)
Gene constraint: LOEUF 0.397 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 61.71 · 1 PDB
Residue 674: the 'disordered' region

Full AXIN2 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

Also linked: oligodontia-cancer predisposition syndrome

Similar variants

AXIN2 p.Pro674= Benign/Likely benign ★★ same residue
AXIN2 p.Pro674Arg Uncertain significance ★ ⚠ same residue
AXIN2 p.Pro674Leu Conflicting classifications of pathogenicity ★ ⚠ same residue
AXIN2 c.1060-1G>C Likely pathogenic ★★ same condition
AXIN2 c.1200+1G>A Likely pathogenic ★★ same condition
AXIN2 c.1201-1G>C Likely pathogenic ★★ same condition
AXIN2 c.1713-1G>A Likely pathogenic ★★ same condition
AXIN2 c.815+1G>A Pathogenic/Likely 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/axin2-p-pro674ser (accessed [today's date]).

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