OSBPL1A
Chr 18oxysterol binding protein like 1A
Also known as: ORP-1, ORP1, OSBPL1B
The protein binds phospholipids and cholesterol metabolites, stabilizes RAB7A on late endosomes/lysosomes, and alters the functional properties of late endocytic compartments. OSBPL1A is extremely intolerant to loss-of-function variants (LOEUF 0.522), suggesting that mutations likely cause significant clinical phenotypes, though specific disease associations have not yet been established. The inheritance pattern and associated phenotypes remain to be determined.
Population Genetics & Constraint
gnomAD v4 — loss-of-function & missense intolerance
More LoF-intolerant than ~75% of genes
Mild missense constraint
ClinVar Variant Classifications
168 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 | 33 | 0 | 33 |
Likely Pathogenic | 0 | 0 | 1 | 0 | 1 |
VUS | 0 | 99 | 6 | 0 | 105 |
Likely Benign | 0 | 2 | 0 | 1 | 3 |
Benign | 0 | 0 | 0 | 0 | 0 |
| Total | 0 | 101 | 40 | 1 | 142 |
LoF = frameshift, stop gained/lost, canonical splice · Counts from ClinVar esearch · Updated hourly
View in ClinVar →Protein Context — Lollipop Plot
OSBPL1A · 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