G3BP2
Chr 4G3BP stress granule assembly factor 2
The G3BP2 protein serves as a scaffold for cytoplasmic stress granule formation, which are membraneless compartments that store mRNAs and proteins in response to cellular stress and function as platforms for antiviral signaling. Mutations in this gene cause neurodevelopmental disorders with onset in infancy or early childhood, featuring developmental delay, intellectual disability, seizures, and brain malformations, inherited in an autosomal dominant pattern. The gene is highly constrained against loss-of-function variants, indicating that proper protein function is critical for normal 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).
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
74 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 | 23 | 0 | 23 |
Likely Pathogenic | 0 | 0 | 0 | 0 | 0 |
VUS | 0 | 28 | 4 | 0 | 32 |
Likely Benign | 0 | 1 | 0 | 1 | 2 |
Benign | 0 | 0 | 0 | 0 | 0 |
| Total | 0 | 29 | 27 | 1 | 57 |
LoF = frameshift, stop gained/lost, canonical splice · Counts from ClinVar esearch · Updated hourly
View in ClinVar →Protein Context — Lollipop Plot
G3BP2 · 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