AOX1

Chr 2

aldehyde oxidase 1

Also known as: AO, AOH1

Aldehyde oxidase is a metabolic enzyme that oxidizes aromatic compounds and aldehydes, playing a key role in xenobiotic and drug metabolism while also participating in reactive oxygen species homeostasis. Mutations cause autosomal recessive cutis laxa with severe pulmonary, gastrointestinal, and genitourinary anomalies, typically presenting in the neonatal period. This gene shows very low constraint against loss-of-function variants.

OMIMResearchSummary from RefSeq, UniProt
GOFmechanismLOEUF 0.94
Clinical SummaryAOX1
Population Constraint (gnomAD)
Low constraint (pLI 0.00) — loss-of-function variants are relatively tolerated in the population.

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Tolerant — LoF & missense variants common in population
LoF Constraint
0.94LOEUF
pLI 0.000
Z-score 2.02
OE 0.75 (0.610.94)
Tolerant

Typical tolerance to LoF variation

Missense Constraint
0.18Z-score
OE missense 0.98 (0.921.04)
731 obs / 744.8 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios
LoF OE0.75 (0.610.94)
00.351.4
Missense OE0.98 (0.921.04)
00.61.4
Synonymous OE1.01
01.21.6
LoF obs/exp: 59 / 78.3Missense obs/exp: 731 / 744.8Syn Z: -0.12
DN
0.5968th %ile
GOF
0.72top 25%
LOF
0.3941th %ile

The highest-scoring mechanism for this gene is gain-of-function.

GOFprediction above median

Note: In-silico variant effect predictors (SIFT, PolyPhen, REVEL, CADD) may underestimate pathogenicity of missense variants in genes with GOF or DN mechanisms. Consider functional evidence and clinical context.

Predictions from Badonyi M, Marsh JA. PLoS ONE. 2024;19(8):e0307312.

ClinVar Variant Classifications

0 submitted variants in ClinVar

Protein Context — Lollipop Plot

AOX1 · protein map & ClinVar variants

Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.

3D Protein StructureAlphaFold

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

No active trials found for this gene.

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Clinical Literature
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