ARHGAP35

Chr 19

Rho GTPase activating protein 35

Also known as: GRF-1, GRLF1, P190-A, P190A, p190ARhoGAP, p190RhoGAP

The protein functions as a Rho GTPase-activating protein that regulates cell adhesion, migration, and morphogenesis, playing critical roles in retinal development, neural tube fusion, cerebral hemisphere midline fusion, and axon outgrowth and guidance. Mutations cause neurodevelopmental disorders with intellectual disability, developmental delay, and structural brain abnormalities, inherited in an autosomal dominant pattern. The gene is extremely intolerant to loss-of-function variants, indicating that proper protein dosage is critical for normal neurodevelopment.

OMIMResearchSummary from RefSeq, UniProt
LOFmechanismLOEUF 0.06
Clinical SummaryARHGAP35
Population Constraint (gnomAD)
Highly constrained gene — heterozygous loss-of-function variants are very rare in the population (pLI 1.00). One damaged copy is likely sufficient to cause disease.

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Dual constrained — LoF & missense intolerant
LoF Constraint
0.06LOEUF
pLI 1.000
Z-score 6.68
OE 0.00 (0.000.06)
Highly constrained

Among the most LoF-intolerant genes (~top 3%)

Missense Constraint
4.16Z-score
OE missense 0.60 (0.560.64)
510 obs / 852.0 exp
Constrained

Highly missense-constrained (top ~0.1%)

Observed / Expected Ratios
LoF OE0.00 (0.000.06)
00.351.4
Missense OE0.60 (0.560.64)
00.61.4
Synonymous OE0.99
01.21.6
LoF obs/exp: 0 / 52.0Missense obs/exp: 510 / 852.0Syn Z: 0.15
Curated Mechanism (G2P)Gene2Phenotype (DDG2P) ↗
definitiveARHGAP35-related developmental disorderLOFAD
DN
0.2698th %ile
GOF
0.3689th %ile
LOF
0.77top 5%

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

LOFprediction above median · LOEUF 0.06

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

ARHGAP35 · 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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