TKT

gene
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Summary

TKT (transketolase, HGNC:11834) is a protein-coding gene on chromosome 3p21.1, encoding Transketolase (P29401). Catalyzes the transfer of a two-carbon ketol group from a ketose donor to an aldose acceptor, via a covalent intermediate with the cofactor thiamine pyrophosphate. It is a selective cancer dependency (DepMap: 38.2% of cell lines).

This gene encodes a thiamine-dependent enzyme which plays a role in the channeling of excess sugar phosphates to glycolysis in the pentose phosphate pathway. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene.

Source: NCBI Gene 7086 — RefSeq curated summary.

At a glance

  • Gene–disease (curated): transketolase deficiency (Strong, GenCC)
  • Clinical variants (ClinVar): 131 total — 2 pathogenic, 2 likely-pathogenic
  • Druggable target: yes — 1 molecules with ChEMBL bioactivity
  • Cancer dependency (DepMap): dependent in 38.2% of screened cell lines
  • MANE Select transcript: NM_001064

Identifiers

Gene identifiers

FieldValue
HGNC IDHGNC:11834
Approved symbolTKT
Nametransketolase
Location3p21.1
Locus typegene with protein product
StatusApproved
Ensembl geneENSG00000163931
Ensembl biotypeprotein_coding
OMIM606781
Entrez7086

Gene structure

Transcript identifiers

Ensembl transcripts: 27 — 17 protein_coding, 6 retained_intron, 3 nonsense_mediated_decay, 1 protein_coding_CDS_not_defined

ENST00000423516, ENST00000423525, ENST00000450814, ENST00000460243, ENST00000460343, ENST00000461139, ENST00000462138, ENST00000466765, ENST00000469678, ENST00000472528, ENST00000483706, ENST00000487660, ENST00000494523, ENST00000869610, ENST00000869611, ENST00000869612, ENST00000869613, ENST00000935658, ENST00000935659, ENST00000935660, ENST00000935661, ENST00000935662, ENST00000935663, ENST00000935664, ENST00000935665, ENST00000971004, ENST00000971005

RefSeq mRNA: 3 — MANE Select: NM_001064 NM_001064, NM_001135055, NM_001258028

CCDS: CCDS2871, CCDS58834

Canonical transcript exons

ENST00000462138 — 14 exons

ExonStartEnd
ENSE000018633115322471253225931
ENSE000022763575325583653256022
ENSE000034815955324113253241245
ENSE000034885445322900753229137
ENSE000034897245322827653228359
ENSE000034910155322675653226878
ENSE000035374005322805653228149
ENSE000035580065323045753230621
ENSE000035639125323498353235174
ENSE000035676635322928053229436
ENSE000035787995324212553242242
ENSE000035793805323315653233274
ENSE000035865845323135753231550
ENSE000036148315324025153240348

Expression profiles

Bgee: expression breadth ubiquitous, 301 present calls, max score 99.54.

FANTOM5 (CAGE): breadth ubiquitous, TPM avg 535.1975 / max 3614.5788, expressed in 1828 samples.

FANTOM5 promoters (4 alternative TSS)

Promoter IDTPM avgSamples expressed
42511511.98511828
4251021.12771799
425071.1098648
425090.9749566

Top tissues by expression

302 total, by Bgee expression score (0-100, higher = more expressed):

TissueAnatomy IDExpression scoreQuality
monocyteCL:000057699.54gold quality
mononuclear cellCL:000084299.49gold quality
leukocyteCL:000073899.47gold quality
granulocyteCL:000009499.30gold quality
bloodUBERON:000017899.19gold quality
right lobe of thyroid glandUBERON:000111999.03gold quality
body of pancreasUBERON:000115098.96gold quality
bone marrowUBERON:000237198.89gold quality
left lobe of thyroid glandUBERON:000112098.74gold quality
left adrenal glandUBERON:000123498.61gold quality
right adrenal gland cortexUBERON:003582798.57gold quality
esophagus mucosaUBERON:000246998.54gold quality
left adrenal gland cortexUBERON:003582598.52gold quality
right adrenal glandUBERON:000123398.50gold quality
stromal cell of endometriumCL:000225598.43gold quality
right lungUBERON:000216798.43gold quality
thyroid glandUBERON:000204698.40gold quality
adrenal cortexUBERON:000123598.38gold quality
upper lobe of lungUBERON:000894898.35gold quality
upper lobe of left lungUBERON:000895298.35gold quality
lower esophagus mucosaUBERON:003583498.35gold quality
esophagusUBERON:000104398.33gold quality
bone marrow cellCL:000209298.31gold quality
spleenUBERON:000210698.30gold quality
gall bladderUBERON:000211098.26gold quality
cortical plateUBERON:000534398.24gold quality
embryoUBERON:000092298.22gold quality
lower esophagusUBERON:001347398.14gold quality
lower esophagus muscularis layerUBERON:003583398.13gold quality
bone elementUBERON:000147498.08gold quality

Single-cell (SCXA)

Detected in 21 experiment(s), a significant marker in 18.

ExperimentMarker?Max mean expression
E-MTAB-11121yes2620.68
E-MTAB-10662yes1911.08
E-MTAB-6678yes1342.40
E-MTAB-6819yes1206.06
E-HCAD-4yes232.12
E-CURD-122yes80.11
E-MTAB-10553yes37.79
E-MTAB-6701yes36.00
E-HCAD-10yes34.36
E-MTAB-9467yes33.58
E-MTAB-9221yes29.66
E-HCAD-9yes25.02
E-CURD-112yes24.22
E-GEOD-125970yes15.90
E-CURD-88yes13.23

Regulation

Is transcription factor: no

Upstream regulators (CollecTRI, top): AP1, AR, CEBPB, EGR1, ESR1, FOXN1, FOXO1, JUN, KAT5, KLF4, MAX, MITF, MYC, MYF6, NFE2L2, NFKB, PAX1, PAX6, PDX1, PITX2, PRDM2, SP1, STAT5B, TBP, TCF12, TCF15, THRA, THRB, TP53

miRNA regulators (miRDB)

16 targeting TKT, top 30 by miRDB confidence (max_score; target_count = how many genes the miRNA targets in total — lower means more specific):

miRNAMax scoreAvg scoremiRNA target_count
HSA-MIR-371B-5P99.9975.344759
HSA-MIR-373-5P99.9875.364753
HSA-MIR-616-5P99.9875.584775
HSA-MIR-1-3P99.9372.351914
HSA-MIR-20699.9372.501893
HSA-MIR-61399.9171.501710
HSA-MIR-153-5P99.8973.866317
HSA-MIR-3663-3P99.8470.39798
HSA-MIR-6887-3P99.6667.831778
HSA-MIR-513C-5P99.5068.421730
HSA-MIR-514B-5P99.5068.191766
HSA-MIR-451898.1266.821030
HSA-MIR-3664-3P97.8567.621452
HSA-MIR-1266-5P97.7166.921052
HSA-MIR-3127-5P97.5265.24786
HSA-MIR-391896.1364.651300

Functional genomics

DepMap (CRISPR cell-line fitness): dependent in 38.2% of screened cell lines.

Literature-anchored findings (GeneRIF, showing 28)

  • Almost all multiple sclerosis patients had cerebrospinal fluid IgG directed to isoforms of one of the oligodendroglial molecules, transketolase, 2’,3’-cyclic-nucleotide 3’-phosphodiesterase type I, collapsin response mediator protein 2, and tubulin beta4. (PMID:18676363)
  • This protein has been found differentially expressed in the dorsolateral prefrontal cortex from patients with schizophrenia. (PMID:19110265)
  • This protein has been found differentially expressed in thalami from patients with schizophrenia. (PMID:20471030)
  • The crystal structure of human transketolase and new insights into its mode of action. (PMID:20667822)
  • Single Nucleotide Polymorphism in transketolase is associated with diabetic nephropathy. (PMID:20826743)
  • TKT is a target gene of the BACH1 transcription factor according to ChIP-seq analysis in HEK 293 cells. (PMID:21555518)
  • Structure and function of the transketolase from Mycobacterium tuberculosis and comparison with the human enzyme. (PMID:22645655)
  • No transketolase activity of TKTDelta38 can be detected for conversion of physiological sugar substrates thus arguing against an intrinsically encoded enzymatic function of TKTL1 in tumor cell metabolism (PMID:23118983)
  • Data indicate that transketolase (hTKT). shares 61% sequence identity with transketolase-like protein (TKTL1). (PMID:23261987)
  • TKT rs3736156 identified significant differences in the onset of cardiovascular event in patients having genotypes AG + AA versus GG (PMID:23492569)
  • basal TK activity was decreased in cases with diabetic neuropathy (PMID:24114639)
  • Akt1 phosphorylates TKT on Thr382, markedly enhancing enzyme activity. (PMID:24981175)
  • Transketolase is upregulated in metastatic peritoneal implants and promotes ovarian cancer cell proliferation. (PMID:25895698)
  • transketolase (TKT)is required for cancer growth because of its ability to affect the production of NAPDH to counteract oxidative stress. (PMID:26811478)
  • The observed associations of genetic variation in transketolase enzyme with neuropathic symptoms and reduced thermal sensation in recent-onset diabetes suggest a role of pathways metabolizing glycolytic intermediates in early diabetic neuropathy. (PMID:27103086)
  • Mutations in TKT gene is associated with a Syndrome Including Short Stature, Developmental Delay, and Congenital Heart Defects. (PMID:27259054)
  • reduced expression of transketolase in pyrimidine 5’-nucleotidase deficient patients (PMID:27381654)
  • Over-expressed and hypo-methylated TKT gene is associated with hepatocellular carcinoma. (PMID:27760737)
  • results suggest that SH2D5 is an HBV-induced protein capable of binding to TKT, leading to induction of HCC cell proliferation. (PMID:30659097)
  • The regulation of TKT by oxythiamine and/or vitamin B1 may therefore be associated with response to the modulation of NET formation by preventing generation of excessive NETs in inflammatory diseases. (PMID:31415630)
  • Transketolase Activity in the Formation of the Azinomycin Azabicycle Moiety (PMID:31424204)
  • Erythrocyte transketolase deficiency in patients suffering from Crohn’s disease. (PMID:31646581)
  • The nuclear translocation of transketolase inhibits the farnesoid receptor expression by promoting the binding of HDAC3 to FXR promoter in hepatocellular carcinoma cell lines. (PMID:31949131)
  • Genetic variants in TKT and DERA in the nicotinamide adenine dinucleotide phosphate pathway predict melanoma survival. (PMID:32659474)
  • Untargeted metabolomics as an unbiased approach to the diagnosis of inborn errors of metabolism of the non-oxidative branch of the pentose phosphate pathway. (PMID:32828637)
  • QM/MM Study of Human Transketolase: Thiamine Diphosphate Activation Mechanism and Complete Catalytic Cycle. (PMID:34161071)
  • Transketolase promotes colorectal cancer metastasis through regulating AKT phosphorylation. (PMID:35110545)
  • TKT-PARP1 axis induces radioresistance by promoting DNA double-strand break repair in hepatocellular carcinoma. (PMID:38216672)

Cross-species orthologs

3 orthologs

OrganismSymbolGene ID
danio_reriotktaENSDARG00000029689
mus_musculusTktENSMUSG00000021957
rattus_norvegicusTktENSRNOG00000016064

Paralogs (4): TKTL1 (ENSG00000007350), BCKDHB (ENSG00000083123), TKTL2 (ENSG00000151005), PDHB (ENSG00000168291)

Protein

Protein identifiers

TransketolaseP29401 (reviewed: P29401)

All UniProt accessions (5): E9PFF2, P29401, F8W888, F8WAX4, V9HWD9

UniProt curated annotations — full annotation on UniProt →

Function. Catalyzes the transfer of a two-carbon ketol group from a ketose donor to an aldose acceptor, via a covalent intermediate with the cofactor thiamine pyrophosphate.

Subunit / interactions. Homodimer.

Disease relevance. Short stature, developmental delay, and congenital heart defects (SDDHD) [MIM:617044] An autosomal recessive syndrome characterized by short stature, developmental delay, intellectual disability and congenital heart defects including ventricular septal defect, atrial septal defect and patent foramen ovale. Cataract and uveitis are observed in some patients. The disease is caused by variants affecting the gene represented in this entry.

Cofactor. Binds 1 Mg(2+) ion per subunit. Can also utilize other divalent metal cations, such as Ca(2+), Mn(2+) and Co(2+). Binds 1 thiamine pyrophosphate per subunit.

Similarity. Belongs to the transketolase family.

Isoforms (2)

UniProt IDNamesCanonical?
P29401-11yes
P29401-22

RefSeq proteins (3): NP_001055, NP_001128527, NP_001244957 (=MANE)

Domains & families (InterPro)

IDNameType
IPR005474Transketolase_NDomain
IPR005475Transketolase-like_Pyr-bdDomain
IPR009014Transketo_C/PFOR_IIHomologous_superfamily
IPR020826Transketolase_BSBinding_site
IPR029061THDP-bindingHomologous_superfamily
IPR033248Transketolase_CDomain
IPR049557Transketolase_CSConserved_site
IPR051424Transketolase-likeFamily

Pfam: PF00456, PF02779, PF02780

Enzyme classification (BRENDA):

  • EC 2.2.1.1 — transketolase (BRENDA: 41 organisms, 197 substrates, 77 inhibitors, 215 Km, 72 kcat entries)

Substrate kinetics (BRENDA)

38 substrates with measured Km, best-characterized 15. Km ranges are aggregated across organisms/conditions.

SubstrateKm (mM)Measurements
D-XYLULOSE 5-PHOSPHATE0.0056–4.0862
D-RIBOSE 5-PHOSPHATE0.007–752
THIAMINE DIPHOSPHATE0.0003–0.00714
FRUCTOSE 6-PHOSPHATE0.0002–1111
GLYCOLALDEHYDE0.13–2008
HYDROXYPYRUVATE7
D-FRUCTOSE 6-PHOSPHATE0.029–0.726
3-FORMYLBENZOIC ACID1.3–565
D-ERYTHROSE 4-PHOSPHATE0.023–0.365
4-FORMYLBENZOIC ACID13–2514
XYLULOSE 5-PHOSPHATE0.0004–0.164
3-HYDROXYBENZALDEHYDE180–3903
D-RIBOSE-5-PHOSPHATE0.13–2.753
L-ERYTHRULOSE4.9–83
SEDOHEPTULOSE 7-PHOSPHATE0.031–43

Catalyzed reactions (Rhea), 1 shown:

  • D-sedoheptulose 7-phosphate + D-glyceraldehyde 3-phosphate = aldehydo-D-ribose 5-phosphate + D-xylulose 5-phosphate (RHEA:10508)

UniProt features (105 total): helix 29, strand 21, binding site 19, modified residue 16, sequence conflict 7, turn 5, site 2, sequence variant 2, chain 1, active site 1, cross-link 1, splice variant 1

Structure

Experimental structures (PDB)

13 structures.

PDBMethodResolution (Å)
4KXVX-RAY DIFFRACTION0.97
4KXWX-RAY DIFFRACTION0.97
4KXUX-RAY DIFFRACTION0.98
4KXXX-RAY DIFFRACTION1.03
6HADX-RAY DIFFRACTION1.04
6HA3X-RAY DIFFRACTION1.08
6RJBX-RAY DIFFRACTION1.15
4KXYX-RAY DIFFRACTION1.26
8WA8X-RAY DIFFRACTION1.48
8WA9X-RAY DIFFRACTION1.5
8WAAX-RAY DIFFRACTION1.5
3MOSX-RAY DIFFRACTION1.75
3OOYX-RAY DIFFRACTION2.05

Predicted structure (AlphaFold)

ModelpLDDTFraction very-high
AF-P29401-F197.110.97

Functional residue map

Curated UniProt residues grouped by drug-discovery relevance — catalytic, ligand-binding, modification, and mutation-validated positions. Source: UniProtKB sequence features.

Catalytic / active sites (3): 366 (proton donor); 37 (important for catalytic activity); 258 (important for catalytic activity)

Ligand- & substrate-binding residues (19): 187; 244; 258; 258; 318; 345; 392; 416; 424; 428; 37; 474

Post-translational modifications (17): 1, 3, 6, 11, 104, 144, 204, 232, 241, 260, 275, 287, 295, 345, 538, 603, 352

Function

Pathways and Gene Ontology

Reactome pathways

3 pathways

IDPathway
R-HSA-163754Insulin effects increased synthesis of Xylulose-5-Phosphate
R-HSA-71336Pentose phosphate pathway
R-HSA-9818028NFE2L2 regulates pentose phosphate pathway genes

MSigDB gene sets: 350 (showing top): GOBP_NADPPLUS_METABOLIC_PROCESS, GOBP_GROWTH, THEILGAARD_NEUTROPHIL_AT_SKIN_WOUND_DN, GOBP_ORGANOPHOSPHATE_METABOLIC_PROCESS, RIZKI_TUMOR_INVASIVENESS_3D_DN, SARRIO_EPITHELIAL_MESENCHYMAL_TRANSITION_DN, GOBP_ORGANOPHOSPHATE_BIOSYNTHETIC_PROCESS, GOBP_CARBOHYDRATE_DERIVATIVE_METABOLIC_PROCESS, GOBP_GLUCOSE_6_PHOSPHATE_METABOLIC_PROCESS, GOBP_NUCLEOBASE_CONTAINING_SMALL_MOLECULE_METABOLIC_PROCESS, GOBP_GENERATION_OF_PRECURSOR_METABOLITES_AND_ENERGY, GOBP_CARBOHYDRATE_DERIVATIVE_BIOSYNTHETIC_PROCESS, ACATTCC_MIR1_MIR206, YAO_TEMPORAL_RESPONSE_TO_PROGESTERONE_CLUSTER_13, GOTZMANN_EPITHELIAL_TO_MESENCHYMAL_TRANSITION_DN

GO Biological Process (6): pentose-phosphate shunt (GO:0006098), pentose-phosphate shunt, non-oxidative branch (GO:0009052), regulation of growth (GO:0040008), glyceraldehyde-3-phosphate biosynthetic process (GO:0046166), D-xylulose 5-phosphate biosynthetic process (GO:1901159), glyceraldehyde-3-phosphate metabolic process (GO:0019682)

GO Molecular Function (9): magnesium ion binding (GO:0000287), transketolase activity (GO:0004802), calcium ion binding (GO:0005509), thiamine pyrophosphate binding (GO:0030976), protein homodimerization activity (GO:0042803), protein binding (GO:0005515), transferase activity (GO:0016740), transketolase or transaldolase activity (GO:0016744), metal ion binding (GO:0046872)

GO Cellular Component (8): nucleoplasm (GO:0005654), peroxisome (GO:0005777), endoplasmic reticulum membrane (GO:0005789), cytosol (GO:0005829), nuclear body (GO:0016604), vesicle (GO:0031982), extracellular exosome (GO:0070062), cytoplasm (GO:0005737)

Reactome top-level categories

Rollup of top-3 pathways:

CategoryPathways
Integration of energy metabolism1
Metabolism of carbohydrates and carbohydrate derivatives1
Nuclear events mediated by NFE2L21

GO top-level categories

Rollup of top GO terms by namespace:

CategoryTerms
cellular anatomical structure3
glyceraldehyde-3-phosphate metabolic process2
organophosphate biosynthetic process2
carbohydrate derivative biosynthetic process2
metal ion binding2
cation binding2
NADPH regeneration1
pentose-phosphate shunt, oxidative branch1
pentose-phosphate shunt, non-oxidative branch1
glucose 6-phosphate metabolic process1
D-ribulose-phosphate 3-epimerase activity1
ribose-5-phosphate isomerase activity1
transaldolase activity1
transketolase activity1
generation of precursor metabolites and energy1
pentose-phosphate shunt1
growth1
regulation of biological process1
aldehyde biosynthetic process1
D-xylulose 5-phosphate metabolic process1
aldehyde metabolic process1
organophosphate metabolic process1
carbohydrate derivative metabolic process1
transketolase or transaldolase activity1
vitamin binding1
anion binding1
quaternary ammonium group binding1
heterocyclic compound binding1
sulfur compound binding1
identical protein binding1
protein dimerization activity1
binding1
catalytic activity1
transferase activity1
nuclear lumen1
microbody1
organelle membrane1
nuclear outer membrane-endoplasmic reticulum membrane network1
endoplasmic reticulum subcompartment1
cytoplasm1

Protein interactions and networks

STRING

3733 interactions, top by confidence (×1000):

Protein AProtein BPartner UniProtScore
TKTTPK1Q9H3S4964
TKTTALDO1P37837943
TKTPGDP52209847
TKTH6PDO95479847
TKTRPIAP49247840
TKTRPEQ96AT9822
TKTG6PDP11413819
TKTRPEL1Q2QD12783
TKTTPI1P00938781
TKTGPIP06744760
TKTPCP11498722
TKTGAPDHP00354706
TKTXYLBO75191702
TKTPGLSO95336701
TKTENO1P06733660

IntAct

119 interactions, top by confidence:

ABTypeScore
ATG5ATG12psi-mi:“MI:0914”(association)0.800
CFTRESYT2psi-mi:“MI:0914”(association)0.710
TUBA1BTXNDC9psi-mi:“MI:0914”(association)0.640
CFTRHAX1psi-mi:“MI:0914”(association)0.610
TKTPOTEFpsi-mi:“MI:0914”(association)0.530
DMWDGAKpsi-mi:“MI:0914”(association)0.530
ATG2BTKTpsi-mi:“MI:0914”(association)0.530
SV2AEXTL3psi-mi:“MI:0914”(association)0.530
TKTTERF1psi-mi:“MI:0915”(physical association)0.510
Csnk1epsi-mi:“MI:0915”(physical association)0.400
Bles03psi-mi:“MI:0915”(physical association)0.400
GNAT3psi-mi:“MI:0915”(physical association)0.400
TK2psi-mi:“MI:0915”(physical association)0.400
YWHAZTKTpsi-mi:“MI:0915”(physical association)0.400
MAPK8TCP1psi-mi:“MI:0914”(association)0.350
Strn3STK24psi-mi:“MI:0914”(association)0.350
EXOSC9MPHOSPH6psi-mi:“MI:0914”(association)0.350
PRKCDTRAPPC13psi-mi:“MI:0914”(association)0.350
JUNTPM3psi-mi:“MI:0914”(association)0.350
PHOSPHO1DDX39Apsi-mi:“MI:0914”(association)0.350
BCAR1PSMD11psi-mi:“MI:0914”(association)0.350
BCAR1MYO1Cpsi-mi:“MI:0914”(association)0.350

BioGRID (425): TKT (Affinity Capture-MS), TKT (Affinity Capture-MS), ACAA2 (Co-fractionation), ACP1 (Co-fractionation), AKR1A1 (Co-fractionation), AKR1B1 (Co-fractionation), AKR1B15 (Co-fractionation), LOC101930400 (Co-fractionation), AKR1C2 (Co-fractionation), ALDH4A1 (Co-fractionation), ALDOA (Co-fractionation), CALR (Co-fractionation), COX17 (Co-fractionation), DUT (Co-fractionation), ENO1 (Co-fractionation)

ESM2 similar proteins: A0A223HDI5, A3QK15, O00097, P00333, P00504, P04181, P04182, P07754, P08843, P0C0Y4, P0C0Y5, P12863, P14219, P14673, P14674, P14675, P25141, P28032, P29401, P29758, P33097, P34937, P37769, P40142, P41177, P41747, P46226, P48491, P48493, P48494, P48495, P49724, P50137, Q05528, Q07264, Q0II68, Q29RZ0, Q2R8Z5, Q2U919, Q3ZCF5

Diamond homologs: A0AIG6, A1K4R0, A1W4U9, A2C220, A2C9X1, A4SDG1, A5D2Z6, A5N7J2, A6KXB3, A6VKQ3, A7Z6J5, A8FF11, A8FYL0, A9VGD1, B0C8J3, B0JL88, B0TEJ5, B1I3J6, B1WWM7, B1Z1G2, B2A526, B2J5P1, B2V4R3, B4RVY8, B7HB48, B7HNU0, B7IXG8, B7JM28, B7JVJ6, B7KAF7, B8D2I3, B8E247, B8FQ45, B8HWL8, B9E104, B9L1L6, B9MEU8, C0ZC10, C1L2S1, C3LJV1

SIGNOR signaling

9 interactions.

AEffectBMechanism
AKT1“up-regulates activity”TKTphosphorylation
AKT“up-regulates activity”TKTphosphorylation
TKT“down-regulates quantity”“D-xylulose 5-phosphate(2-)”“chemical modification”
TKT“down-regulates quantity”“D-ribofuranose 5-phosphate(2-)”“chemical modification”
TKT“up-regulates quantity”“sedoheptulose 7-phosphate”“chemical modification”
TKT“up-regulates quantity”“D-glyceraldehyde 3-phosphate(2-)”“chemical modification”
NFE2L2“up-regulates quantity by expression”TKT“transcriptional regulation”
VRK2“up-regulates activity”TKTphosphorylation
FBXL6“up-regulates activity”TKTubiquitination

Enriched among interaction partners

Reactome pathways and GO biological processes over-represented among this gene’s 136 IntAct physical interaction partners (hypergeometric vs the genome-wide background, BH-FDR, gene-set size 15–500, ranked by fold). A functional readout of the neighbourhood — distinct from this gene’s own memberships above, and biased toward well-studied / hub proteins, so read it as themes rather than proof.

Reactome pathways:

PathwayPartnersFoldFDR
Apoptotic execution phase525.9×2e-04
Selective autophagy515.1×2e-03
Aggrephagy513.5×2e-03
Apoptosis712.8×2e-04
Programmed Cell Death711.1×4e-04
Macroautophagy67.5×6e-03
Signaling by Interleukins107.0×2e-04
Platelet activation, signaling and aggregation66.9×1e-02

GO biological processes:

GO termPartnersFoldFDR
negative regulation of innate immune response521.8×4e-03

Disease & clinical

Clinical variants and AI predictions

ClinVar

131 variants total. Per-class counts are floors (≥ shown; pagination cap):

ClassificationCount (floor)
Pathogenic2
Likely pathogenic2
Uncertain significance70
Likely benign21
Benign13

Top pathogenic / likely-pathogenic (4)

Variant IDHGVSClassification
223089NM_001064.4(TKT):c.633G>A (p.Trp211Ter)Pathogenic
223091NM_001064.4(TKT):c.952C>T (p.Arg318Cys)Pathogenic
3235058NM_001064.4(TKT):c.181C>T (p.Gln61Ter)Likely pathogenic
4277802NM_001064.4(TKT):c.1697-1G>ALikely pathogenic

SpliceAI

2446 predictions. Top by Δscore:

VariantEffectΔscore
3:53225758:AGG:Adonor_gain1.0000
3:53225782:CAG:Cdonor_gain1.0000
3:53225800:C:Adonor_gain1.0000
3:53225927:GCCAC:Gacceptor_gain1.0000
3:53225928:CCAC:Cacceptor_gain1.0000
3:53225928:CCACC:Cacceptor_gain1.0000
3:53225929:CAC:Cacceptor_gain1.0000
3:53225929:CACC:Cacceptor_gain1.0000
3:53225930:ACC:Aacceptor_loss1.0000
3:53225931:CCTAG:Cacceptor_loss1.0000
3:53225932:C:CCacceptor_gain1.0000
3:53225933:T:Aacceptor_loss1.0000
3:53225938:A:ACacceptor_gain1.0000
3:53225938:A:Cacceptor_gain1.0000
3:53226752:TTACC:Tdonor_loss1.0000
3:53226753:TACCT:Tdonor_loss1.0000
3:53226754:A:ACdonor_gain1.0000
3:53226754:AC:Adonor_gain1.0000
3:53226754:ACCTT:Adonor_gain1.0000
3:53226755:C:CAdonor_loss1.0000
3:53226755:C:CCdonor_gain1.0000
3:53226755:CC:Cdonor_gain1.0000
3:53226755:CCT:Cdonor_gain1.0000
3:53226755:CCTT:Cdonor_gain1.0000
3:53226755:CCTTC:Cdonor_gain1.0000
3:53226874:CTTTT:Cacceptor_gain1.0000
3:53226875:TTTT:Tacceptor_gain1.0000
3:53226876:TTT:Tacceptor_gain1.0000
3:53226877:TT:Tacceptor_gain1.0000
3:53226878:TCT:Tacceptor_loss1.0000

AlphaMissense

4120 scored. Top likely-pathogenic:

VariantProtein changeam_pathogenicity
3:53229368:G:CF392L1.000
3:53229368:G:TF392L1.000
3:53229370:A:GF392L1.000
3:53229377:A:CF389L1.000
3:53229377:A:TF389L1.000
3:53229379:A:GF389L1.000
3:53229128:C:TG425E0.999
3:53229129:C:AG425W0.999
3:53229130:G:CD424E0.999
3:53229130:G:TD424E0.999
3:53229131:T:AD424V0.999
3:53229131:T:GD424A0.999
3:53229132:C:GD424H0.999
3:53229296:G:CH416Q0.999
3:53229296:G:TH416Q0.999
3:53233172:C:AK244N0.999
3:53233172:C:GK244N0.999
3:53241141:G:CH110Q0.999
3:53241141:G:TH110Q0.999
3:53241143:G:CH110D0.999
3:53241169:C:AR101M0.999
3:53226771:C:GD561H0.998
3:53229131:T:CD424G0.998
3:53229137:C:TG422E0.998
3:53229298:G:CH416D0.998
3:53229303:C:TG414D0.998
3:53229342:C:GR401P0.998
3:53229378:A:CF389C0.998
3:53229379:A:TF389I0.998
3:53229383:G:CS387R0.998

dbSNP variants (sampled 300 via entrez): RS1000110061 (3:53229502 C>T), RS1000248427 (3:53234554 C>G,T), RS1000253863 (3:53251050 C>A,T), RS1000284952 (3:53250838 G>C), RS1000308005 (3:53239647 G>T), RS1000603653 (3:53225066 G>A), RS1000768774 (3:53256778 C>T), RS1000842454 (3:53235568 T>G), RS1001213367 (3:53238955 C>A,G), RS1001282943 (3:53235357 C>T), RS1001377038 (3:53234045 G>A,T), RS1001628956 (3:53256122 G>A,T), RS1001642869 (3:53244393 G>T), RS1001673844 (3:53244263 C>A,G,T), RS1001726604 (3:53238740 C>T)

Disease associations

OMIM: gene MIM:606781 | disease phenotypes: MIM:617044

GenCC curated gene-disease

DiseaseClassificationInheritance
transketolase deficiencyStrongAutosomal recessive

Mondo (1): transketolase deficiency (MONDO:0014881)

Orphanet (1): Transketolase deficiency (Orphanet:488618)

HPO phenotypes

0 total (0 of 0 shown, HPO-id order):

GWAS associations

0 associations (top):

Drugs & pharmacology

Drug and pharmacology data

Is drug target: yes

ChEMBL targets (1): CHEMBL4983 (SINGLE PROTEIN)

Molecules with ChEMBL bioactivity

1 molecules (phase ≥1), by development phase (incl. off-target/promiscuous compounds). Patent mentions across the top 20 by phase: 1,538 (via chembl_molecule»patent_compound — counts attach to the compound, not the gene–compound relationship, so off-target/promiscuous molecules can dominate).

MoleculeNamePhasePatents
CHEMBL1232461MOLIBRESIB21,538

PharmGKB: 1 entry (VIP=true, CPIC=false)

ChEMBL bioactivities

94 potent at pChembl≥5 of 102 total, top 50 by pChembl (potency: 10 = 0.1 nM, 6 = 1 µM).

pChemblTypeValueUnitMolecule
8.52Kd3nMCHEMBL255138
8.33EC504.7nMCHEMBL403691
8.15Kd7nMCHEMBL255603
8.10EC508nMCHEMBL252843
8.10EC508nMCHEMBL402594
8.08EC508.3nMCHEMBL271044
8.06EC508.7nMCHEMBL256627
8.05EC509nMCHEMBL401948
8.05EC509nMCHEMBL270613
8.00Kd10nMCHEMBL256627
7.92EC5012nMCHEMBL440237
7.92Kd12nM3-DEAZATHIAMINE
7.89EC5013nMCHEMBL253045
7.82EC5015nMCHEMBL252845
7.80Kd16nMCHEMBL403021
7.75EC5018nMCHEMBL252086
7.68EC5021nMCHEMBL403212
7.66Kd22nMCHEMBL401817
7.64Kd23nMCHEMBL256831
7.60Kd25nMCHEMBL402329
7.60Kd25nMCHEMBL402566
7.58EC5026nMCHEMBL252086
7.57Kd27nMCHEMBL255340
7.55EC5028nMCHEMBL252844
7.55EC5028nMCHEMBL252441
7.55Kd28nMCHEMBL258077
7.54Kd29nMCHEMBL256454
7.52EC5030nMCHEMBL255339
7.50EC5032nMCHEMBL251888
7.48Kd33nMCHEMBL252086
7.47Kd34nMCHEMBL271044
7.44Kd36nMCHEMBL270632
7.44Kd36nMCHEMBL403365
7.40Kd40nMCHEMBL255541
7.34Kd46nMCHEMBL270613
7.30EC5050nMCHEMBL258077
7.28EC5052nMCHEMBL401965
7.28Kd53nMCHEMBL255542
7.25EC5056nMCHEMBL402329
7.24Kd57nMCHEMBL429246
7.22Kd60nMCHEMBL256177
7.20Kd63nMCHEMBL401572
7.19Kd64nMCHEMBL255550
7.19Kd64nMCHEMBL271521
7.12Kd75nMCHEMBL403212
6.98Kd104nMCHEMBL270168
6.96EC50110nMCHEMBL252637
6.96Kd109nMCHEMBL270384
6.96EC50110nMCHEMBL403365
6.94EC50116nMCHEMBL253044

PubChem BioAssay actives

92 with measured affinity, of 118 total; 50 most potent distinct compounds. Largely complementary to BindingDB; screening values are coarse (µM, 4 dp), so sub-nM hits tie at the floor.

CompoundAssayTypeValueUnit
N-[4-amino-5-[[5-(2-hydroxyethyl)-4-methylthiophen-3-yl]methyl]pyrimidin-2-yl]acetamide320591: Inhibition of apo-transketolase by coupled TPPK/Apo-TK enzymatic assaykd0.0030uM
2-[3-[(2-amino-6-methyl-3-pyridinyl)methyl]-4-methyl-1,3-thiazol-3-ium-5-yl]ethyl acetate320379: Inhibition of human transketolase in HCT116 cellsec500.0047uM
2-[3-[(6-amino-3-pyridinyl)methyl]-4-methyl-1,3-thiazol-3-ium-5-yl]ethanol320378: Inhibition of transketolase by TPPK/apo-TK coupled assaykd0.0070uM
N-[(2-amino-6-chloro-3-pyridinyl)methyl]-N-[(Z)-3-[[(Z)-2-[(2-amino-6-chloro-3-pyridinyl)methyl-formylamino]-5-hydroxypent-2-en-3-yl]disulfanyl]-5-hydroxypent-2-en-2-yl]formamide313901: Inhibition of transketolase in human HCT116 cellsec500.0080uM
[(Z)-3-acetylsulfanyl-4-[(2-amino-6-methyl-3-pyridinyl)methyl-formylamino]pent-3-enyl] acetate313901: Inhibition of transketolase in human HCT116 cellsec500.0080uM
2-[3-[(2-amino-4,6-dimethyl-3-pyridinyl)methyl]-4-methyl-1,3-thiazol-3-ium-5-yl]ethanol320379: Inhibition of human transketolase in HCT116 cellsec500.0083uM
2-[3-[(2-amino-6-ethyl-3-pyridinyl)methyl]-4-methyl-1,3-thiazol-3-ium-5-yl]ethanol320379: Inhibition of human transketolase in HCT116 cellsec500.0087uM
2-[3-[(2-amino-6-chloro-3-pyridinyl)methyl]-4-methyl-1,3-thiazol-3-ium-5-yl]ethanol chloride313901: Inhibition of transketolase in human HCT116 cellsec500.0090uM
2-[3-[(2-amino-6-chloro-3-pyridinyl)methyl]-4-methyl-1,3-thiazol-3-ium-5-yl]ethanol320379: Inhibition of human transketolase in HCT116 cellsec500.0090uM
2-[4-[(4-amino-2-methylpyrimidin-5-yl)methyl]-3-methylthiophen-2-yl]ethanol320591: Inhibition of apo-transketolase by coupled TPPK/Apo-TK enzymatic assaykd0.0120uM
N-[(2-amino-6-methyl-3-pyridinyl)methyl]-N-[(Z)-3-[[(Z)-2-[(2-amino-6-methyl-3-pyridinyl)methyl-formylamino]-5-hydroxypent-2-en-3-yl]disulfanyl]-5-hydroxypent-2-en-2-yl]formamide313901: Inhibition of transketolase in human HCT116 cellsec500.0120uM
N-[(2-amino-6-methyl-3-pyridinyl)methyl]-N-[(Z)-5-hydroxy-3-(2-hydroxyethyldisulfanyl)pent-2-en-2-yl]formamide313901: Inhibition of transketolase in human HCT116 cellsec500.0130uM
N-[(2-amino-6-methyl-3-pyridinyl)methyl]-N-[(1Z)-1-(2-oxo-1,3-oxathian-4-ylidene)ethyl]formamide313901: Inhibition of transketolase in human HCT116 cellsec500.0150uM
2-[3-[(4-amino-2-methylpyrimidin-5-yl)methyl]-4-methyl-2-oxo-1,3-thiazol-5-yl]ethyl phosphono hydrogen phosphate320588: Inhibition of apo-transketolasekd0.0160uM
2-[3-[(2-amino-6-methyl-3-pyridinyl)methyl]-4-methyl-1,3-thiazol-3-ium-5-yl]ethanol chloride313901: Inhibition of transketolase in human HCT116 cellsec500.0180uM
2-[3-[(2-amino-6-methyl-3-pyridinyl)methyl]-2-ethyl-4-methyl-1,3-thiazol-3-ium-5-yl]ethanol320379: Inhibition of human transketolase in HCT116 cellsec500.0210uM
2-[3-[(2-amino-6-methyl-3-pyridinyl)methyl]-4-methyl-1,3-thiazol-3-ium-5-yl]ethyl phosphono hydrogen phosphate320377: Binding affinity to apo-transketolasekd0.0220uM
N-[6-amino-5-[[5-(2-hydroxyethyl)-4-methyl-1,3-thiazol-3-ium-3-yl]methyl]-2-pyridinyl]acetamide320378: Inhibition of transketolase by TPPK/apo-TK coupled assaykd0.0230uM
2-[3-[(2-amino-6-methyl-3-pyridinyl)methyl]-2,4-dimethyl-1,3-thiazol-3-ium-5-yl]ethanol320378: Inhibition of transketolase by TPPK/apo-TK coupled assaykd0.0250uM
2-[3-[(2-amino-6-methyl-3-pyridinyl)methyl]-4-(hydroxymethyl)-1,3-thiazol-3-ium-5-yl]ethanol320378: Inhibition of transketolase by TPPK/apo-TK coupled assaykd0.0250uM
(1S)-1-[3-[(2-amino-6-methyl-3-pyridinyl)methyl]-4-methyl-1,3-thiazol-3-ium-5-yl]ethane-1,2-diol320378: Inhibition of transketolase by TPPK/apo-TK coupled assaykd0.0270uM
2-[3-[(2-amino-6-methyl-3-pyridinyl)methyl]-2,4-dimethyl-1,3-thiazol-3-ium-5-yl]ethanol chloride313901: Inhibition of transketolase in human HCT116 cellsec500.0280uM
[(Z)-4-[(2-amino-6-methyl-3-pyridinyl)methyl-formylamino]-3-benzoylsulfanylpent-3-enyl] benzoate313901: Inhibition of transketolase in human HCT116 cellsec500.0280uM
(1R)-1-[3-[(2-amino-6-methyl-3-pyridinyl)methyl]-4-methyl-1,3-thiazol-3-ium-5-yl]ethane-1,2-diol320378: Inhibition of transketolase by TPPK/apo-TK coupled assaykd0.0280uM
2-[3-[(2-amino-6-methyl-3-pyridinyl)methyl]-1,3-thiazol-3-ium-5-yl]ethanol320378: Inhibition of transketolase by TPPK/apo-TK coupled assaykd0.0290uM
1-[3-[(2-amino-6-methyl-3-pyridinyl)methyl]-5-(2-hydroxyethyl)-4-methyl-1,3-thiazol-3-ium-2-yl]ethanol320379: Inhibition of human transketolase in HCT116 cellsec500.0300uM
N-[(Z)-3-[[(Z)-2-[acetyl-[(2-amino-6-methyl-3-pyridinyl)methyl]amino]-5-hydroxypent-2-en-3-yl]disulfanyl]-5-hydroxypent-2-en-2-yl]-N-[(2-amino-6-methyl-3-pyridinyl)methyl]acetamide313901: Inhibition of transketolase in human HCT116 cellsec500.0320uM
2-[3-[(2-amino-3-pyridinyl)methyl]-4-methyl-1,3-thiazol-3-ium-5-yl]ethanol320378: Inhibition of transketolase by TPPK/apo-TK coupled assaykd0.0360uM
2-[3-[(2-amino-6-methyl-3-pyridinyl)methyl]-2-methyl-1,3-thiazol-3-ium-5-yl]ethanol320378: Inhibition of transketolase by TPPK/apo-TK coupled assaykd0.0360uM
2-[3-[(2-amino-6-methyl-3-pyridinyl)methyl]-4-ethyl-1,3-thiazol-3-ium-5-yl]ethanol320378: Inhibition of transketolase by TPPK/apo-TK coupled assaykd0.0400uM
3-[[(Z)-2-[(2-amino-6-methyl-3-pyridinyl)methyl-formylamino]-5-hydroxypent-2-en-3-yl]disulfanyl]propanoic acid313901: Inhibition of transketolase in human HCT116 cellsec500.0520uM
1-[3-[(2-amino-6-methyl-3-pyridinyl)methyl]-4-methyl-1,3-thiazol-3-ium-5-yl]ethane-1,2-diol320378: Inhibition of transketolase by TPPK/apo-TK coupled assaykd0.0530uM
6-amino-5-[[5-(2-hydroxyethyl)-4-methyl-1,3-thiazol-3-ium-3-yl]methyl]pyridine-2-carbonitrile320378: Inhibition of transketolase by TPPK/apo-TK coupled assaykd0.0570uM
2-[4-[(4-amino-2-cyclopropylpyrimidin-5-yl)methyl]-3-methylthiophen-2-yl]ethanol320591: Inhibition of apo-transketolase by coupled TPPK/Apo-TK enzymatic assaykd0.0600uM
2-[4-[[4-amino-2-(trifluoromethyl)pyrimidin-5-yl]methyl]-3-methylthiophen-2-yl]ethanol320591: Inhibition of apo-transketolase by coupled TPPK/Apo-TK enzymatic assaykd0.0630uM
2-[3-[(4-amino-3-pyridinyl)methyl]-4-methyl-1,3-thiazol-3-ium-5-yl]ethanol320378: Inhibition of transketolase by TPPK/apo-TK coupled assaykd0.0640uM
2-[4-[(4-amino-2-propan-2-ylpyrimidin-5-yl)methyl]-3-methylthiophen-2-yl]ethanol320591: Inhibition of apo-transketolase by coupled TPPK/Apo-TK enzymatic assaykd0.0640uM
2-[3-[[2-amino-6-(trifluoromethyl)-3-pyridinyl]methyl]-4-methyl-1,3-thiazol-3-ium-5-yl]ethanol320378: Inhibition of transketolase by TPPK/apo-TK coupled assaykd0.1040uM
2-[3-[(2-amino-5-iodo-3-pyridinyl)methyl]-4-methyl-1,3-thiazol-3-ium-5-yl]ethanol320378: Inhibition of transketolase by TPPK/apo-TK coupled assaykd0.1090uM
2-[3-[(2-amino-3-pyridinyl)methyl]-4-methyl-1,3-thiazol-3-ium-5-yl]ethanol chloride313901: Inhibition of transketolase in human HCT116 cellsec500.1100uM
[(Z)-2-[(2-amino-6-methyl-3-pyridinyl)methyl-formylamino]-5-hydroxypent-2-en-3-yl]sulfanylmethyl 2,2-dimethylpropanoate313901: Inhibition of transketolase in human HCT116 cellsec500.1160uM
2-[5-[[5-(2-hydroxyethyl)-4-methyl-1,3-thiazol-3-ium-3-yl]methyl]pyridine-2-carbonyl]benzoic acid320378: Inhibition of transketolase by TPPK/apo-TK coupled assaykd0.1400uM
4-methyl-3-[(2-methyl-6-pyridin-3-ylpyrazolo[3,4-d]pyrimidin-4-yl)amino]-N-[3-(trifluoromethyl)phenyl]benzamide2149594: Binding affinity to human TKT incubated for 45 mins by Kinobead based pull down assaykd0.1513uM
4-methyl-3-[(1-methyl-6-pyridin-3-ylpyrazolo[3,4-d]pyrimidin-4-yl)amino]-N-[3-(trifluoromethyl)phenyl]benzamide2149594: Binding affinity to human TKT incubated for 45 mins by Kinobead based pull down assaykd0.1669uM
[2-[3-[(4-amino-2-methylpyrimidin-5-yl)methyl]-4-methyl-1,3-thiazol-3-ium-5-yl]ethoxy-methylphosphoryl] dihydrogen phosphate320588: Inhibition of apo-transketolasekd0.1700uM
2-[4-methyl-3-[(5-methyl-3-pyridinyl)methyl]-1,3-thiazol-3-ium-5-yl]ethanol320378: Inhibition of transketolase by TPPK/apo-TK coupled assaykd0.2200uM
2-[4-[(4-amino-2-phenylpyrimidin-5-yl)methyl]-3-methylthiophen-2-yl]ethanol320591: Inhibition of apo-transketolase by coupled TPPK/Apo-TK enzymatic assaykd0.2300uM
2-[4-methyl-3-[[6-(trifluoromethyl)-3-pyridinyl]methyl]-1,3-thiazol-3-ium-5-yl]ethanol320378: Inhibition of transketolase by TPPK/apo-TK coupled assaykd0.3100uM
N-[(2-amino-3-pyridinyl)methyl]-N-[(Z)-3-[[(Z)-2-[(2-amino-3-pyridinyl)methyl-formylamino]-5-hydroxypent-2-en-3-yl]disulfanyl]-5-hydroxypent-2-en-2-yl]formamide313901: Inhibition of transketolase in human HCT116 cellsec500.4790uM
2-[3-[(2-amino-6-methyl-3-pyridinyl)methyl]-4-methyl-2-(pyridin-3-ylmethyl)-1,3-thiazol-3-ium-5-yl]ethanol320379: Inhibition of human transketolase in HCT116 cellsec500.8400uM

CTD chemical–gene interactions

83 total (human), top 30 by PubMed support.

ChemicalActions (top 5)PubMed papers
bisphenol Aaffects expression, decreases expression, increases expression4
sodium arsenitedecreases expression, affects cotreatment, increases abundance, increases expression4
Arsenicincreases abundance, affects cotreatment, increases expression3
Tobacco Smoke Pollutionaffects expression, decreases expression, increases expression3
Tretinoinaffects cotreatment, increases expression3
sodium arsenateincreases abundance, increases expression2
cobaltous chlorideincreases expression2
mercuric bromideincreases expression, affects cotreatment2
4-(5-benzo(1,3)dioxol-5-yl-4-pyridin-2-yl-1H-imidazol-2-yl)benzamideaffects cotreatment, decreases expression, increases expression2
Arsenic Trioxideaffects binding, decreases reaction, affects cotreatment, increases expression2
Acetaminophendecreases expression, increases expression2
Cadmiumincreases abundance, increases expression2
Phenylmercuric Acetateaffects cotreatment, increases expression2
Valproic Acidaffects expression, increases expression2
Cadmium Chlorideincreases abundance, increases expression2
p-Chloromercuribenzoic Acidaffects cotreatment, increases expression2
Particulate Matterincreases abundance, increases expression, affects cotreatment2
FR900359increases phosphorylation1
bisphenol Fincreases expression1
TAK-243increases sumoylation1
methylmercuric chlorideincreases expression1
triphenyl phosphateaffects expression1
pirinixic acidincreases expression, affects binding, increases activity1
pyrogallol 1,3-dimethyl etheraffects cotreatment, affects localization, decreases expression1
arseniteaffects binding, decreases reaction1
manganese chlorideaffects cotreatment, increases abundance, increases expression1
benzo(e)pyrenedecreases methylation1
lead chlorideincreases expression1
cupric chlorideincreases expression1
cupric oxideincreases expression1

ChEMBL screening assays

18 unique, capped per target: 18 binding

Representative assays (with source publication via chembl_document):

Assay IDTypeDescriptionSource paper
CHEMBL4270851BindingBinding affinity to transketolase in human Hela cells lysates assessed as protein enrichment by measuring normalized heavy/light ratio at by nano-LC-ESIMS/MS analysisDetermination of Gymnemic Acid I as a Protein Biosynthesis Inhibitor Using Chemical Proteomics. — J Nat Prod

Cellosaurus cell lines

2 cell lines: 2 cancer cell line

First 10 cell lines (id-ordered, not curated):

CellosaurusNameCategorySex
CVCL_D1ZCAbcam A-549 TKT KOCancer cell lineMale
CVCL_D2DDAbcam HCT 116 TKT KOCancer cell lineMale

Clinical trials (associated diseases)

0 trials via MONDO — disease-level, not drug-specific.