REM1
Chr 20RRAD and GEM like GTPase 1
Also known as: GD:REM, GES
The REM1 protein is a RAS-like GTPase that promotes endothelial cell sprouting and reorganizes the actin cytoskeleton in endothelial cells, potentially functioning in angiogenesis and calcium signaling. Mutations cause autosomal recessive cerebroretinal microangiopathy with calcifications and cysts, a neurovascular disorder affecting the brain and retina. This gene is extremely intolerant to loss-of-function variants, indicating that complete loss of REM1 function is likely pathogenic.
Population Genetics & Constraint
gnomAD v4 — loss-of-function & missense intolerance
Highly tolerant — LoF variants common in population
Mild missense constraint
This gene has evidence for multiple mechanisms of pathogenicity (dominant-negative and gain-of-function). Both the Badonyi & Marsh prediction and the broader genomic evidence point to dominant-negative as the predominant mechanism. Different variants in this gene may act through different mechanisms — interpret in context of the specific variant.
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
92 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 | 10 | 0 | 10 |
Likely Pathogenic | 0 | 0 | 6 | 0 | 6 |
VUS | 0 | 47 | 8 | 0 | 55 |
Likely Benign | 0 | 2 | 6 | 0 | 8 |
Benign | 0 | 1 | 0 | 0 | 1 |
| Total | 0 | 50 | 30 | 0 | 80 |
LoF = frameshift, stop gained/lost, canonical splice · Counts from ClinVar esearch · Updated hourly
View in ClinVar →Protein Context — Lollipop Plot
REM1 · 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