ALKBH4

Chr 7

alkB homolog 4, lysine demethylase

Also known as: ABH4

NCBI Gene: 54784ENSG00000160993UniProt: Q9NXW9

Enables 2-oxoglutarate-dependent dioxygenase activity and actin binding activity. Involved in actomyosin structure organization and cleavage furrow ingression. Located in contractile ring and midbody. [provided by Alliance of Genome Resources, Jul 2025]

93
ClinVar variants
18
Pathogenic / LP
0.13
pLI score
0
Active trials
Clinical Summary— ALKBH4
⚡
Population Constraint (gnomAD)
Constrained for loss-of-function variants (OE-LoF 0.31) despite low pLI — interpret in context.
📋
ClinVar Variants
18 Pathogenic / Likely Pathogenic· 71 VUS of 93 total submissions
Some data sources returned errors (1)

omim: Error: OMIM fetch failed: 429

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

gnomAD
Tolerant — LoF & missense variants common in population
LoF Constraint?LOEUF (Loss-of-function Observed/Expected Upper bound Fraction) is the upper bound of the 90% CI for LoF OE — the preferred gnomAD v4 metric. Lower = more intolerant to LoF. LOEUF < 0.35 = highly constrained.
0.80LOEUF
pLI 0.126
Z-score 1.99
OE 0.31 (0.14–0.80)
Tolerant

Typical tolerance to LoF variation

Missense Constraint?Missense Z-score: standard deviations fewer missense variants observed vs. expected. Z > 3.09 (p < 0.001) = gene does not tolerate missense variation. OE missense < 0.6 is also considered constrained.
0.56Z-score
OE missense 0.89 (0.79–1.01)
181 obs / 203.6 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios?Shaded band = 90% confidence interval. Vertical tick = point estimate. Grey threshold line = gnomAD constraint cutoff for that variant class.
LoF OE?Ratio of observed to expected LoF variants. Upper CI bound (LOEUF) ≤ 0.35 = strong LoF constraint signal.0.31 (0.14–0.80)
0≤0.351.4
Missense OE?Ratio of observed to expected missense variants. OE ≤ 0.6 = fewer missense variants than expected by chance.0.89 (0.79–1.01)
0≤0.61.4
Synonymous OE?Control metric — synonymous variants are largely neutral and expected near OE = 1.0. Significant deviation may indicate annotation issues.1.15
0≤1.21.6
LoF obs/exp: 3 / 9.7Missense obs/exp: 181 / 203.6Syn Z: -1.11

ClinVar Variant Classifications

93 submitted variants in ClinVar

ClinVar

Classification Summary

Pathogenic16
Likely Pathogenic2
VUS71
Likely Benign4
16
Pathogenic
2
Likely Pathogenic
71
VUS
4
Likely Benign

Curated Variants Distribution

Classified variants from ClinVar · 5 ACMG categories

ClassificationLoFMissense + InframeNon-codingSynonymousTotal
Pathogenic
0
0
16
0
16
Likely Pathogenic
0
0
2
0
2
VUS
0
67
4
0
71
Likely Benign
0
4
0
0
4
Benign
0
0
0
0
0
Total07122093

LoF = frameshift, stop gained/lost, canonical splice · Counts from ClinVar esearch · Updated hourly

View in ClinVar →

Protein Context — Lollipop Plot

ALKBH4 · protein map & ClinVar variants

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

OMIM — Genotype-Phenotype

OMIM

No OMIM entries found.

Clinical Literature
Landmark / reviewRecent case evidence
Key Publications
Landmark & review papers · by relevance
PubMed
Top 10 resultsSearch PubMed ↗
Recent Gene-Specific Literature
Gene in title · MEDLINE · newest first
Europe PMC
Top 5 resultsSearch Europe PMC ↗

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

ClinicalTrials.gov

No active trials found for this gene.

Search ClinicalTrials.gov →

External Resources

Links to major genomics databases and tools