RBFOX1

Chr 16

RNA binding fox-1 homolog 1

Also known as: 2BP1, A2BP1, FOX-1, FOX1, HRNBP1

RBFOX1 encodes an RNA-binding protein that regulates tissue-specific alternative splicing by recognizing specific RNA sequences. Mutations cause autism spectrum disorder, intellectual disability, epilepsy, and other neurodevelopmental phenotypes with autosomal dominant inheritance. The gene is highly constrained against loss-of-function variants (pLI 0.95, LOEUF 0.34), indicating that haploinsufficiency is likely not tolerated in the general population.

GeneReviewsOMIMResearchSummary from RefSeq, UniProt
LOFmechanismLOEUF 0.34
Clinical SummaryRBFOX1
Population Constraint (gnomAD)
Highly constrained gene — heterozygous loss-of-function variants are very rare in the population (pLI 0.95). One damaged copy is likely sufficient to cause disease.
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GeneReview available — RBFOX1
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Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

LoF intolerant — likely haploinsufficient
LoF Constraint
0.34LOEUF
pLI 0.953
Z-score 4.12
OE 0.15 (0.070.34)
Highly constrained

Highly LoF-intolerant (top ~10% of genes)

Missense Constraint
0.20Z-score
OE missense 0.97 (0.881.07)
271 obs / 280.2 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios
LoF OE0.15 (0.070.34)
00.351.4
Missense OE0.97 (0.881.07)
00.61.4
Synonymous OE1.39
01.21.6
LoF obs/exp: 4 / 27.2Missense obs/exp: 271 / 280.2Syn Z: -3.41
Curated Mechanism (G2P)Gene2Phenotype (DDG2P) ↗
limitedRBFOX1-related neurodevelopmental disorderLOFAD
DN
0.5575th %ile
GOF
0.2795th %ile
LOF
0.75top 10%

The highest-scoring mechanism for this gene is loss-of-function (haploinsufficiency).

LOFprediction above median · LOEUF 0.34

Predictions from Badonyi M, Marsh JA. PLoS ONE. 2024;19(8):e0307312. Mechanism ranking also informed by gnomAD constraint, ClinVar, and ClinGen data.

ClinVar Variant Classifications

0 submitted variants in ClinVar

Protein Context — Lollipop Plot

RBFOX1 · 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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