RASGEF1A
Chr 10RasGEF domain family member 1A
Also known as: CG4853
The RASGEF1A protein functions as a guanine nucleotide exchange factor that activates RAS family proteins (KRAS, HRAS, NRAS) and RAP2A, regulating cell migration and RAS signaling pathways. Mutations cause autosomal recessive neurodevelopmental disorder with microcephaly, seizures, and brain malformations. This gene is highly constrained against loss-of-function mutations, indicating that complete loss of protein function is likely pathogenic.
Population Genetics & Constraint
gnomAD v4 — loss-of-function & missense intolerance
Highly LoF-intolerant (top ~10% of genes)
Moderately missense-constrained (top ~2.5%)
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 | 11 | 0 | 11 |
Likely Pathogenic | 0 | 0 | 2 | 0 | 2 |
VUS | 0 | 42 | 5 | 0 | 47 |
Likely Benign | 0 | 1 | 0 | 0 | 1 |
Benign | 0 | 0 | 1 | 0 | 1 |
| Total | 0 | 43 | 19 | 0 | 62 |
LoF = frameshift, stop gained/lost, canonical splice · Counts from ClinVar esearch · Updated hourly
View in ClinVar →Protein Context — Lollipop Plot
RASGEF1A · 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