ZIC2
Chr 13ADZic family zinc finger 2
Also known as: HPE5
ZIC2 encodes a zinc finger transcription factor that acts as both an activator and repressor, playing critical roles in early central nervous system development and retinal projection formation. Mutations cause holoprosencephaly type 5, the most common structural brain malformation, which is inherited in an autosomal dominant pattern. This gene is highly constrained against loss-of-function variants, reflecting its essential role in normal brain development.
Population Genetics & Constraint
gnomAD v4 — loss-of-function & missense intolerance
Highly LoF-intolerant (top ~10% of genes)
Highly missense-constrained (top ~0.1%)
The highest-scoring mechanism for this gene is loss-of-function (haploinsufficiency).
Literature Evidence
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
0 submitted variants in ClinVar
Protein Context — Lollipop Plot
ZIC2 · protein map & ClinVar variants
Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.
3D Protein StructureAlphaFold
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