Is AGXT p.Ile267Phe (c.799A>T) pathogenic?

AGXT p.Ile267Phe (c.799A>T) is classified Uncertain significance in AGXT (ClinVar, Multiple submitters, 2 submitters; last evaluated 2023-10-27). AlphaMissense: likely benign (0.1702); Absent from gnomAD v4.1; Associated with primary hyperoxaluria type 1.

What condition is associated with AGXT p.Ile267Phe (c.799A>T)?

AGXT p.Ile267Phe (c.799A>T) is associated with primary hyperoxaluria type 1 (ClinVar).

How common is AGXT p.Ile267Phe (c.799A>T) in the general population?

AGXT p.Ile267Phe (c.799A>T) is absent from gnomAD v4.1 (gnomAD).

How is Primary hyperoxaluria inherited?

Typically Autosomal recessive (Orphanet). A genetic counselor can assess individual risk for a family.

What do computational predictors say about AGXT p.Ile267Phe (c.799A>T)?

AlphaMissense predicts likely benign (score 0.1702) — an in-silico prediction, not a clinical call.

AGXT p.Ile267Phe

c.799A>T · rs1246719671 · VCV2681188

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

AlphaMissense

likely benign

0.1702 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

0/2 damaging

AlphaMissense, SaProt · REVEL no call

Conditions

primary hyperoxaluria type 1

Computational evidence

Protein change
AlphaMissense	0.1702	likely benign
REVEL	0.388	indeterminate
SaProt	LLR -6.90	tolerated
⇒ AlphaMissense and SaProt both call this tolerated; REVEL makes no call.
Splicing
SpliceAI	<0.2	all four deltas below 0.2 · A>C here scores Δ0.21 · evaluated, not missing
Constraint at this position
Conservation	phyloP -1.6	GERP -1.6
Regional constraint	o/e 1.00	unconstrained · MANE · 9,952 bp · p 0.92 · regional, not allelic
Overall
CADD	9.614	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: AGXT
Protein: p.Ile267Phe
Coding: c.799A>T
MANE Select: NM_000030
dbSNP: rs1246719671
Type: single nucleotide variant
Location: chr2:240875957 (GRCh38)
Gene constraint: LOEUF 1.251 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
Structure: AlphaFold pLDDT 98.30 · 17 PDB
Residue 267: an α-helix

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

Disease context

primary hyperoxaluria type 1 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Primary hyperoxaluria (Orphanet):

Inheritance: Autosomal recessive
Onset: All ages
Prevalence: 1-9 / 1 000 000 (Germany)

Similar variants

AGXT p.Ile267fs Pathogenic same residue
AGXT c.358+1G>A Pathogenic ★★ same condition
AGXT c.359-2A>G Likely pathogenic ★★ same condition
AGXT c.423+1G>A Pathogenic/Likely pathogenic ★★ same condition
AGXT c.524+2T>A Likely pathogenic ★★ same condition
AGXT c.525-1G>A Pathogenic ★★ same condition
AGXT c.525-2A>T Pathogenic/Likely pathogenic ★★ same condition
AGXT c.595+1G>T 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/agxt-p-ile267phe (accessed [today's date]).

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