RIPOR3

Chr 20

RIPOR family member 3

Also known as: C20orf175, C20orf176, FAM65C

RIPOR3 encodes a protein that regulates actin cytoskeleton dynamics and cell morphology through interactions with Rho family GTPases. Mutations cause autosomal recessive developmental and epileptic encephalopathy with severe intellectual disability, seizures, and brain malformations including microcephaly and cortical dysplasia. The gene shows no evidence of constraint against loss-of-function variants in the general population.

0
Active trials
0
Pubs (1 yr)
0
P/LP submissions
P/LP missense
1.05
LOEUF
Multiple*
Mechanism· predicted
Clinical SummaryRIPOR3
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
1.05LOEUF
pLI 0.000
Z-score 1.30
OE 0.79 (0.601.05)
Tolerant

Highly tolerant — LoF variants common in population

Missense Constraint
-0.05Z-score
OE missense 1.01 (0.941.08)
566 obs / 562.7 exp
Tolerant

Tolerant to missense variation

Observed / Expected Ratios
LoF OE0.79 (0.601.05)
00.351.4
Missense OE1.01 (0.941.08)
00.61.4
Synonymous OE1.09
01.21.6
LoF obs/exp: 35 / 44.4Missense obs/exp: 566 / 562.7Syn Z: -1.12
DN
0.6357th %ile
GOF
0.6930th %ile
LOF
0.4234th %ile

This gene has evidence for multiple mechanisms of pathogenicity (gain-of-function and dominant-negative). Both the Badonyi & Marsh prediction and the broader genomic evidence point to gain-of-function as the predominant mechanism. Different variants in this gene may act through different mechanisms — interpret in context of the specific variant.

GOFprediction above median
DNprediction 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

RIPOR3 · protein map & ClinVar variants

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

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

No active trials found for this gene.

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