ANKRD20A1

Chr 9

ankyrin repeat domain 20 family member A1

Also known as: ANKRD20A

The ANKRD20A1 protein is located in the plasma membrane but its specific function is not well characterized. This gene is not currently associated with any established human disease or clinical phenotype. The gene appears tolerant to loss-of-function variants based on population genetics data.

ResearchSummary from RefSeq
MultiplemechanismLOEUF 1.79
Clinical SummaryANKRD20A1
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
1.79LOEUF
pLI 0.000
Z-score -0.21
OE 1.08 (0.631.79)
Tolerant

Highly tolerant — LoF variants common in population

Missense Constraint
-0.13Z-score
OE missense 1.05 (0.861.28)
67 obs / 64.1 exp
Tolerant

Tolerant to missense variation

Observed / Expected Ratios
LoF OE1.08 (0.631.79)
00.351.4
Missense OE1.05 (0.861.28)
00.61.4
Synonymous OE1.02
01.21.6
LoF obs/exp: 8 / 7.4Missense obs/exp: 67 / 64.1Syn Z: -0.08
DN
0.78top 25%
GOF
0.72top 25%
LOF
0.2485th %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

ANKRD20A1 · 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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Recent Gene-Specific Literature
Gene in title · MEDLINE · newest first
Europe PMC

No open access results found