RCBTB1

Chr 13AR

RCC1 and BTB domain containing protein 1

Also known as: CLLD7, CLLL7, GLP, RDEOA

This protein contains an RCC1 domain and BTB domain and may be involved in cell cycle regulation through chromatin remodeling. Mutations cause autosomal recessive retinal dystrophy with or without extraocular anomalies. The gene shows minimal constraint against loss-of-function variants in population databases.

OMIMResearchSummary from RefSeq, OMIM, UniProt
LOFmechanismARLOEUF 0.791 OMIM phenotype
Clinical SummaryRCBTB1
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Gene-Disease Validity (ClinGen)
RCBTB1-related retinopathy · ARDefinitive

Definitive — sufficient evidence for diagnostic panels

Population Constraint (gnomAD)
Low constraint (pLI 0.00) — loss-of-function variants are relatively tolerated in the population.

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Tolerant — LoF & missense variants common in population
LoF Constraint
0.79LOEUF
pLI 0.000
Z-score 2.39
OE 0.51 (0.340.79)
Tolerant

Typical tolerance to LoF variation

Missense Constraint
1.03Z-score
OE missense 0.83 (0.750.92)
245 obs / 294.8 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios
LoF OE0.51 (0.340.79)
00.351.4
Missense OE0.83 (0.750.92)
00.61.4
Synonymous OE0.96
01.21.6
LoF obs/exp: 14 / 27.6Missense obs/exp: 245 / 294.8Syn Z: 0.33
Curated Mechanism (G2P)Gene2Phenotype (DDG2P) ↗
strongRCBTB1-related retinal dystrophy with or without extraocular anomaliesLOFAR
limitedRCBTB1-related familial exudative vitreoretinopathyOTHERAD
DN
0.7033th %ile
GOF
0.6442th %ile
LOF
0.3260th %ile

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.

DNprediction above median
GOFprediction above median

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

0 submitted variants in ClinVar

Protein Context — Lollipop Plot

RCBTB1 · protein map & ClinVar variants

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

3D Protein StructureAlphaFold

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

No active trials found for this gene.

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Clinical Literature
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