ABT1

Chr 6

activator of basal transcription 1

Also known as: Esf2, hABT1

NCBI Gene: 29777ENSG00000146109UniProt: Q9ULW3

Basal transcription of genes by RNA polymerase II requires the interaction of TATA-binding protein (TBP) with the core region of class II promoters. Studies in mouse suggest that the protein encoded by this gene likely activates basal transcription from class II promoters by interaction with TBP and the class II promoter DNA. [provided by RefSeq, Jul 2008]

58
ClinVar variants
4
Pathogenic / LP
0.02
pLI score
0
Active trials
Clinical Summary— ABT1
⚡
Population Constraint (gnomAD)
Low constraint (pLI 0.02) — loss-of-function variants are relatively tolerated in the population.
📋
ClinVar Variants
4 Pathogenic / Likely Pathogenic· 54 VUS of 58 total submissions
Some data sources returned errors (1)

omim: Error: OMIM fetch failed: 429

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

gnomAD
Tolerant — LoF & missense variants common in population
LoF Constraint?LOEUF (Loss-of-function Observed/Expected Upper bound Fraction) is the upper bound of the 90% CI for LoF OE — the preferred gnomAD v4 metric. Lower = more intolerant to LoF. LOEUF < 0.35 = highly constrained.
1.01LOEUF
pLI 0.020
Z-score 1.55
OE 0.44 (0.22–1.01)
Tolerant

Highly tolerant — LoF variants common in population

Missense Constraint?Missense Z-score: standard deviations fewer missense variants observed vs. expected. Z > 3.09 (p < 0.001) = gene does not tolerate missense variation. OE missense < 0.6 is also considered constrained.
0.17Z-score
OE missense 0.96 (0.86–1.09)
187 obs / 193.8 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios?Shaded band = 90% confidence interval. Vertical tick = point estimate. Grey threshold line = gnomAD constraint cutoff for that variant class.
LoF OE?Ratio of observed to expected LoF variants. Upper CI bound (LOEUF) ≤ 0.35 = strong LoF constraint signal.0.44 (0.22–1.01)
0≤0.351.4
Missense OE?Ratio of observed to expected missense variants. OE ≤ 0.6 = fewer missense variants than expected by chance.0.96 (0.86–1.09)
0≤0.61.4
Synonymous OE?Control metric — synonymous variants are largely neutral and expected near OE = 1.0. Significant deviation may indicate annotation issues.1.09
0≤1.21.6
LoF obs/exp: 4 / 9.0Missense obs/exp: 187 / 193.8Syn Z: -0.58

ClinVar Variant Classifications

58 submitted variants in ClinVar

ClinVar

Classification Summary

Pathogenic4
VUS54
4
Pathogenic
54
VUS

Curated Variants Distribution

Classified variants from ClinVar · 5 ACMG categories

ClassificationLoFMissense + InframeNon-codingSynonymousTotal
Pathogenic
0
0
4
0
4
Likely Pathogenic
0
0
0
0
0
VUS
0
49
5
0
54
Likely Benign
0
0
0
0
0
Benign
0
0
0
0
0
Total0499058

LoF = frameshift, stop gained/lost, canonical splice · Counts from ClinVar esearch · Updated hourly

View in ClinVar →

Protein Context — Lollipop Plot

ABT1 · protein map & ClinVar variants

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

OMIM — Genotype-Phenotype

OMIM

No OMIM entries found.

Clinical Literature
Landmark / reviewRecent case evidence
Key Publications
Landmark & review papers · by relevance
PubMed
Top 10 resultsSearch PubMed ↗
Recent Gene-Specific Literature
Gene in title · MEDLINE · newest first
Europe PMC
Top 5 resultsSearch Europe PMC ↗

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

ClinicalTrials.gov

No active trials found for this gene.

Search ClinicalTrials.gov →

External Resources

Links to major genomics databases and tools