FAHD2B

Chr 2

fumarylacetoacetate hydrolase domain containing 2B

Enables oxaloacetate tautomerase activity. Involved in oxaloacetate metabolic process. Located in mitochondrion. [provided by Alliance of Genome Resources, Jul 2025]

0
Active trials
0
Pubs (1 yr)
0
P/LP submissions
P/LP missense
1.36
LOEUF
Multiple*
Mechanism· predicted
Clinical SummaryFAHD2B
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
1.36LOEUF
pLI 0.000
Z-score 0.56
OE 0.84 (0.541.36)
Tolerant

Highly tolerant — LoF variants common in population

Missense Constraint
0.41Z-score
OE missense 0.91 (0.801.04)
158 obs / 173.1 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios
LoF OE0.84 (0.541.36)
00.351.4
Missense OE0.91 (0.801.04)
00.61.4
Synonymous OE1.03
01.21.6
LoF obs/exp: 12 / 14.3Missense obs/exp: 158 / 173.1Syn Z: -0.20
DN
0.6842th %ile
GOF
0.6639th %ile
LOF
0.4136th %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

FAHD2B · 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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Clinical Literature
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Recent Gene-Specific Literature
Gene in title · MEDLINE · newest first
Europe PMC

No open access results found