FOXJ2
Chr 12forkhead box J2
Also known as: FHX
FOXJ2 encodes a transcriptional activator that binds specific DNA sequences to regulate gene expression and plays an important role in spermatogenesis, particularly during meiosis. Mutations cause neurodevelopmental disorders with intellectual disability and developmental delay, inherited in an autosomal dominant pattern. This gene is highly constrained against loss-of-function variants, indicating that such mutations are likely to cause significant clinical effects.
Population Genetics & Constraint
gnomAD v4 — loss-of-function & missense intolerance
Highly LoF-intolerant (top ~10% of genes)
Mild missense constraint
The highest-scoring mechanism for this gene is loss-of-function (haploinsufficiency).
Predictions from Badonyi M, Marsh JA. PLoS ONE. 2024;19(8):e0307312. Mechanism ranking also informed by gnomAD constraint, ClinVar, and ClinGen data.
ClinVar Variant Classifications
138 submitted variants in ClinVar
Classification Summary
Curated Variants Distribution
Classified variants from ClinVar · 5 ACMG categories
| Classification | LoF | Missense + Inframe | Non-coding | Synonymous | Total |
|---|---|---|---|---|---|
Pathogenic | 0 | 0 | 40 | 0 | 40 |
Likely Pathogenic | 0 | 0 | 2 | 0 | 2 |
VUS | 0 | 78 | 7 | 0 | 85 |
Likely Benign | 0 | 1 | 2 | 0 | 3 |
Benign | 0 | 0 | 0 | 0 | 0 |
| Total | 0 | 79 | 51 | 0 | 130 |
LoF = frameshift, stop gained/lost, canonical splice · Counts from ClinVar esearch · Updated hourly
View in ClinVar →Protein Context — Lollipop Plot
FOXJ2 · protein map & ClinVar variants
Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.
External Resources
Links to major genomics databases and tools
Clinical Trials
Active and recruiting trials from ClinicalTrials.gov
No active trials found for this gene.
Search ClinicalTrials.gov →External Resources
Links to major genomics databases and tools