PRRG4
Chr 11proline rich and Gla domain 4
Also known as: PRGP4, TMG4
The PRRG4 protein controls axon guidance across the central nervous system by preventing ROBO1 receptor delivery to the cell surface and down-regulating its expression. Mutations cause neurodevelopmental disorders with autosomal recessive inheritance. This gene has a GeneReviews entry indicating established clinical significance in pediatric neurogenetics.
Population Genetics & Constraint
gnomAD v4 — loss-of-function & missense intolerance
Typical tolerance to LoF variation
Mild missense constraint
The highest-scoring mechanism for this gene is dominant-negative.
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
62 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 | 21 | 0 | 21 |
Likely Pathogenic | 0 | 0 | 0 | 0 | 0 |
VUS | 0 | 20 | 3 | 0 | 23 |
Likely Benign | 0 | 4 | 1 | 0 | 5 |
Benign | 0 | 2 | 1 | 1 | 4 |
| Total | 0 | 26 | 26 | 1 | 53 |
LoF = frameshift, stop gained/lost, canonical splice · Counts from ClinVar esearch · Updated hourly
View in ClinVar →Protein Context — Lollipop Plot
PRRG4 · 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