TAOK1

Chr 17AD

TAO kinase 1

Also known as: DDIB, KFC-B, MAP3K16, MARKK, PSK-2, PSK2, TAO1, hKFC-B

Enables alpha-tubulin binding activity; beta-tubulin binding activity; and kinase activity. Involved in several processes, including mitotic G2 DNA damage checkpoint signaling; negative regulation of microtubule depolymerization; and positive regulation of MAPK cascade. Located in several cellular components, including microtubule cytoskeleton; nuclear body; and perinuclear region of cytoplasm. [provided by Alliance of Genome Resources, Jul 2025]

Primary Disease Associations & Inheritance

Developmental delay with or without intellectual impairment or behavioral abnormalitiesMIM #619575
AD
311
ClinVar variants
81
Pathogenic / LP
1.00
pLI score· haploinsufficient
1
Active trials
Clinical SummaryTAOK1
🧬
Gene-Disease Validity (ClinGen)
syndromic intellectual disability · ADDefinitive

Definitive — sufficient evidence for diagnostic panels

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.
📋
ClinVar Variants
81 Pathogenic / Likely Pathogenic· 191 VUS of 311 total submissions
💊
Clinical Trials
1 active or recruiting trial — potential therapeutic options may be available

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Dual constrained — LoF & missense intolerant
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.
0.27LOEUF
pLI 0.998
Z-score 6.31
OE 0.17 (0.100.27)
Highly constrained

Highly LoF-intolerant (top ~10% of genes)

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.
4.82Z-score
OE missense 0.42 (0.380.47)
234 obs / 552.8 exp
Constrained

Highly missense-constrained (top ~0.1%)

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.0.17 (0.100.27)
00.351.4
Missense OE?Ratio of observed to expected missense variants. OE ≤ 0.6 = fewer missense variants than expected by chance.0.42 (0.380.47)
00.61.4
Synonymous OE?Control metric — synonymous variants are largely neutral and expected near OE = 1.0. Significant deviation may indicate annotation issues.0.91
01.21.6
LoF obs/exp: 11 / 66.5Missense obs/exp: 234 / 552.8Syn Z: 0.92

ClinVar Variant Classifications

311 submitted variants in ClinVar

Classification Summary

Pathogenic36
Likely Pathogenic45
VUS191
Likely Benign25
Benign11
Conflicting3
36
Pathogenic
45
Likely Pathogenic
191
VUS
25
Likely Benign
11
Benign
3
Conflicting

Curated Variants Distribution

Classified variants from ClinVar · 5 ACMG categories

ClassificationLoFMissense + InframeNon-codingSynonymousTotal
Pathogenic
14
1
21
0
36
Likely Pathogenic
18
13
14
0
45
VUS
3
165
19
4
191
Likely Benign
0
8
7
10
25
Benign
0
0
3
8
11
Conflicting
3
Total351876422311

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

View in ClinVar →

Protein Context — Lollipop Plot

TAOK1 · protein map & ClinVar variants

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

Gene2Phenotype Curations

TAOK1-related intellectual disability

definitive
ADLoss Of FunctionAbsent Gene Product
Dev. Disorders
G2P ↗

Gene2Phenotype curations · DECIPHER consortium patient cohort (public variants) · deciphergenomics.org

OMIM — Genotype-Phenotype Relationships

1 OMIM entry

TAO KINASE 1; TAOK1
MIM #610266 · *

Developmental delay with or without intellectual impairment or behavioral abnormalities

MIM #619575

Molecular basis of disorder known

Autosomal dominant
Clinical Literature
Landmark / reviewRecent case evidence