RBP4

Chr 10ADAR

retinol binding protein 4

Also known as: MCOPCB10, RDCCAS

This protein belongs to the lipocalin family and is the specific carrier for retinol (vitamin A alcohol) in the blood. It delivers retinol from the liver stores to the peripheral tissues. In plasma, the RBP-retinol complex interacts with transthyretin which prevents its loss by filtration through the kidney glomeruli. A deficiency of vitamin A blocks secretion of the binding protein posttranslationally and results in defective delivery and supply to the epidermal cells. [provided by RefSeq, Jul 2008]

OMIMResearchGenerating clinical summary…

Primary Disease Associations & Inheritance

Microphthalmia/coloboma 10MIM #616428
AD
Retinal dystrophy, iris coloboma, and comedogenic acne syndromeMIM #615147
AR

Clinical highlights

Gene-disease validity (ClinGen)
progressive retinal dystrophy due to retinol transport defect · ARDefinitivesufficient evidence for diagnostic panels
Interpreting a novel variant
Loss of function is the curated mechanism (Gene2Phenotype) and the gene is intolerant of it in the population — truncating, frameshift and canonical splice variants carry more prior weight here than missense.Curated gene-level mechanism — a prior for triage, not a per-variant call.
1
Active trials
144
Pubs (1 yr)
P/LP submissions
P/LP missense
0.59
LOEUF
Multiple*
Mechanism· G2P

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Moderate LoF intolerance
LoF Constraint?
0.59LOEUF
pLI 0.520
Z-score 2.45
OE 0.19 (0.080.59)
Moderately constrained

More LoF-intolerant than ~75% of genes

Missense Constraint?
0.78Z-score
OE missense 0.80 (0.680.95)
98 obs / 122.1 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios?
LoF OE?0.19 (0.080.59)
00.351.4
Missense OE?0.80 (0.680.95)
00.61.4
Synonymous OE?1.00
01.21.6
LoF obs/exp: 2 / 10.6Missense obs/exp: 98 / 122.1Syn Z: 0.00

ClinVar

No ClinVar data available.

Protein Context — Lollipop Plot

RBP4 · protein map & ClinVar variants

Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.