Associated High Confidence AOPs
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Associated AOPs with Level of Relevance 1
AOPs with at least 1 KE associated with chemical, where the KE(s) are neither MIE nor AO
AOP Identifier AOP Title AO Classification OECD Status Coverage Score KE Identifier KE Name
AOP:15Alkylation of DNA in male pre-meiotic germ cells leading to heritable mutationsGenetic DiseaseWPHA/WNT Endorsed0.25KE:155
Inadequate DNA repair
AOP:18PPARα activation in utero leading to impaired fertility in malesReproductive System DiseaseUnder Review0.12KE:289
Decrease, Translocator protein (TSPO)
AOP:27Cholestatic Liver Injury induced by Inhibition of the Bile Salt Export Pump (ABCB11)Gastrointestinal System DiseaseUnder Development0.12KE:1115
Increase, Reactive oxygen species
AOP:112Increased dopaminergic activity leading to endometrial adenocarcinomas (in Wistar rat)Reproductive System Disease; Cancer-0.17KE:111
Agonism, Estrogen receptor
AOP:139Alkylation of DNA leading to cancer 1Cancer-0.25KE:155
Inadequate DNA repair
AOP:167Early-life estrogen receptor activity leading to endometrial carcinoma in the mouse.Reproductive System Disease; Cancer-0.14KE:1065
Activation, estrogen receptor alpha
AOP:207NADPH oxidase and P38 MAPK activation leading to reproductive failure in Caenorhabditis elegansReproductive System Disease-0.12KE:1115
Increase, Reactive oxygen species
AOP:213Inhibition of fatty acid beta oxidation leading to nonalcoholic steatohepatitis (NASH)Gastrointestinal System Disease; Inherited Metabolic Disorder-0.17KE:1115
Increase, Reactive oxygen species
AOP:245Reduction in photophosphorylation leading to growth inhibition in aquatic plantsUnclassified-0.09KE:40
Decrease, Mitochondrial ATP production
AOP:258Renal protein alkylation leading to kidney toxicityUrinary System DiseaseUnder Development0.2KE:40
Decrease, Mitochondrial ATP production
AOP:263Uncoupling of oxidative phosphorylation leading to growth inhibition via decreased cell proliferationUnclassifiedWPHA/WNT Endorsed0.5KE:1821
Decrease, Cell proliferation
KE:1771
Decrease, Adenosine triphosphate pool
AOP:264Uncoupling of oxidative phosphorylation leading to growth inhibition via ATP depletion associated cell deathUnclassifiedUnder Development0.25KE:1771
Decrease, Adenosine triphosphate pool
AOP:266Uncoupling of oxidative phosphorylation leading to growth inhibition via decreased Na-K ATPase activityUnclassifiedUnder Development0.17KE:1771
Decrease, Adenosine triphosphate pool
AOP:267Uncoupling of oxidative phosphorylation leading to growth inhibition via glucose depletionUnclassifiedUnder Development0.2KE:1821
Decrease, Cell proliferation
AOP:272Deposition of energy leading to lung cancerCancerWPHA/WNT Endorsed0.14KE:155
Inadequate DNA repair
AOP:286Mitochondrial complex III antagonism leading to growth inhibition (1)Unclassified-0.5KE:1821
Decrease, Cell proliferation
KE:1771
Decrease, Adenosine triphosphate pool
AOP:287Mitochondrial complex III antagonism leading to growth inhibition (2)Unclassified-0.25KE:1771
Decrease, Adenosine triphosphate pool
AOP:290Mitochondrial ATP synthase antagonism leading to growth inhibition (1)Unclassified-0.5KE:1821
Decrease, Cell proliferation
KE:1771
Decrease, Adenosine triphosphate pool
AOP:291Mitochondrial ATP synthase antagonism leading to growth inhibition (2)Unclassified-0.25KE:1771
Decrease, Adenosine triphosphate pool
AOP:296Oxidative DNA damage leading to chromosomal aberrations and mutationsGenetic Disease; Chromosomal DiseaseWPHA/WNT Endorsed0.2KE:155
Inadequate DNA repair
AOP:299Deposition of energy leading to population decline via DNA oxidation and follicular atresiaUnclassified-0.14KE:1115
Increase, Reactive oxygen species
AOP:303Frustrated phagocytosis-induced lung cancerCancerUnder Development0.14KE:1115
Increase, Reactive oxygen species
AOP:311Deposition of energy leading to population decline via DNA oxidation and oocyte apoptosisUnclassified-0.14KE:1115
Increase, Reactive oxygen species
AOP:322Alkylation of DNA leading to reduced sperm countReproductive System Disease-0.2KE:155
Inadequate DNA repair
AOP:382Angiotensin II type 1 receptor (AT1R) agonism leading to lung fibrosisMusculoskeletal System Disease; Respiratory System DiseaseUnder Development0.17KE:1115
Increase, Reactive oxygen species
AOP:383Inhibition of Angiotensin-converting enzyme 2 leading to liver fibrosisGastrointestinal System DiseaseUnder Development0.17KE:1115
Increase, Reactive oxygen species
AOP:386Deposition of ionizing energy leading to population decline via inhibition of photosynthesisReproductive System Disease-0.12KE:1115
Increase, Reactive oxygen species
AOP:387Deposition of ionising energy leading to population decline via mitochondrial dysfunctionReproductive System Disease-0.25KE:40
Decrease, Mitochondrial ATP production
KE:1115
Increase, Reactive oxygen species
AOP:397Bulky DNA adducts leading to mutationsGenetic DiseaseUnder Development0.33KE:155
Inadequate DNA repair
AOP:399Inhibition of Fyna leading to increased mortality via decreased eye size (Microphthalmos)Unclassified-0.12KE:1821
Decrease, Cell proliferation
AOP:409Frustrated phagocytosis leads to malignant mesotheliomaCancer-0.12KE:1115
Increase, Reactive oxygen species
AOP:413Oxidation and antagonism of reduced glutathione leading to mortality via acute renal failureUnclassified-0.17KE:1115
Increase, Reactive oxygen species
AOP:416Aryl hydrocarbon receptor activation leading to lung cancer through IL-6 toxicity pathwayCancer-0.17KE:1115
Increase, Reactive oxygen species
AOP:418Aryl hydrocarbon receptor activation leading to impaired lung function through AHR-ARNT toxicity pathwayRespiratory System Disease-0.2KE:1115
Increase, Reactive oxygen species
AOP:419Aryl hydrocarbon receptor activation leading to impaired lung function through P53 toxicity pathwayRespiratory System Disease-0.25KE:1923
Altered gene expression, P53 dependent apoptosis pathway
AOP:420Aryl hydrocarbon receptor activation leading to lung cancer through sustained NRF2 toxicity pathwayCancer-0.25KE:1917
Altered gene expression, NRF2 dependent antioxidant pathway
AOP:432Deposition of Energy by Ionizing Radiation leading to Acute Myeloid LeukemiaHematopoietic System Disease; Cancer-0.09KE:155
Inadequate DNA repair
AOP:440Hypothalamus estrogen receptors activity suppression leading to ovarian cancer via ovarian epithelial cell hyperplasiaBenign Neoplasm; Endocrine System Disease; Reproductive System Disease; Reproductive System Disease; Cancer; Endocrine System DiseaseUnder Development0.11KE:1973
Increased, estrogens
AOP:441Ionizing radiation-induced DNA damage leads to microcephaly via apoptosis and premature cell differentiationCongenital Nervous System Abnormality; Nervous System Disease-0.14KE:1974
Activation of Tumor Protein 53
AOP:443DNA damage and mutations leading to Metastatic Breast CancerThoracic Disease; CancerUnder Development0.1KE:155
Inadequate DNA repair
AOP:451Interaction with lung resident cell membrane components leads to lung cancerCancer-0.11KE:1115
Increase, Reactive oxygen species
AOP:460Antagonism of Smoothened receptor leading to orofacial cleftingUnclassifiedUnder Development0.11KE:1821
Decrease, Cell proliferation
AOP:465Alcohol dehydrogenase leading to reproductive dysfunctionUnclassified-0.12KE:748
Increased, Estrogen receptor (ER) activity
AOP:478Deposition of energy leading to occurrence of cataractsNervous System Disease; Monogenic DiseaseUnder Review0.1KE:155
Inadequate DNA repair
AOP:480Mitochondrial complexes inhibition leading to heart failure via decreased ATP productionCardiovascular System Disease; Thoracic DiseaseUnder Development0.2KE:40
Decrease, Mitochondrial ATP production
AOP:491Decrease, GLI1/2 target gene expression leads to orofacial cleftingUnclassifiedUnder Development0.17KE:1821
Decrease, Cell proliferation
AOP:492Glutathione conjugation leading to reproductive dysfunction via oxidative stressReproductive System Disease-0.2KE:1115
Increase, Reactive oxygen species
AOP:497ERa inactivation alters mitochondrial functions and insulin signalling in skeletal muscle and leads to insulin resistance and metabolic syndromeInherited Metabolic Disorder; Disease Of Metabolism-0.12KE:1115
Increase, Reactive oxygen species
AOP:500Activation of MEK-ERK1/2 leads to deficits in learning and cognition via ROS and apoptosisDevelopmental Disorder Of Mental Health-0.14KE:1115
Increase, Reactive oxygen species
AOP:521Essential element imbalance leads to reproductive failure via oxidative stressUnclassified-0.14KE:1115
Increase, Reactive oxygen species
AOP:534Succinate dehydrogenase (SDH) inhibition leads to cancer through oxidative stressCancer-0.17KE:1115
Increase, Reactive oxygen species
AOP:564DBDPE-induced inhibition of mitochondrial complex Ⅰ leading to population decline via neurotoxicity and metabotoxicity.Unclassified-0.09KE:40
Decrease, Mitochondrial ATP production
AOP:569Decreased DNA methylation of FAM50B/PTCHD3 leading to IQ loss of children via PI3K-Akt pathwayDevelopmental Disorder Of Mental Health-0.17KE:1115
Increase, Reactive oxygen species

Associated AOPs with Level of Relevance 2
AOPs with at least 1 AO associated with chemical, and no associated MIE
AOP Identifier AOP Title AO Classification OECD Status Coverage Score KE Identifier KE Name
AOP:384Hyperactivation of ACE/Ang-II/AT1R axis leading to chronic kidney diseaseUrinary System Disease-0.33KE:1115
Increase, Reactive oxygen species
KE:1603
Chronic kidney disease
AOP:504SULT1E1 inhibition leading to uterine adenocarcinoma via increased estrogen availability at target organ levelUnclassified-0.33KE:1065
Activation, estrogen receptor alpha
AOP:561Aromatase induction leading to estrogen receptor alpha activation via increased estradiolUnclassified-0.2KE:1065
Activation, estrogen receptor alpha

Associated AOPs with Level of Relevance 3
AOPs with at least 1 MIE associated with chemical, and no associated AO
AOP Identifier AOP Title AO Classification OECD Status Coverage Score KE Identifier KE Name
AOP:8Upregulation of Thyroid Hormone Catabolism via Activation of Hepatic Nuclear Receptors, and Subsequent Adverse Neurodevelopmental Outcomes in MammalsNervous System DiseaseUnder Development0.11KE:239
Activation, Pregnane-X receptor, NR1l2
AOP:60NR1I2 (Pregnane X Receptor, PXR) activation leading to hepatic steatosisGastrointestinal System Disease; Inherited Metabolic Disorder-0.08KE:245
Activation, PXR/SXR
AOP:282Adverse outcome pathway on photochemical toxicity initiated by light exposureUnclassifiedUnder Review0.25KE:1115
Increase, Reactive oxygen species
AOP:298Increase in reactive oxygen species (ROS) leading to human treatment-resistant gastric cancer via chronic ROSCancer; Gastrointestinal System DiseaseUnder Review0.17KE:1115
Increase, Reactive oxygen species
AOP:324Excessive reactive oxygen species leading to growth inhibition via oxidative DNA damage and cell deathUnclassified-0.25KE:1115
Increase, Reactive oxygen species
AOP:325Excessive reactive oxygen species leading to growth inhibition via lipid peroxidation and cell deathUnclassified-0.25KE:1115
Increase, Reactive oxygen species
AOP:326Excessive reactive oxygen species leading to growth inhibition via protein oxidation and cell deathUnclassified-0.25KE:1115
Increase, Reactive oxygen species
AOP:327Excessive reactive oxygen species production leading to mortality (1)Unclassified-0.2KE:1115
Increase, Reactive oxygen species
AOP:328Excessive reactive oxygen species production leading to mortality (2)Unclassified-0.4KE:1115
Increase, Reactive oxygen species
KE:1771
Decrease, Adenosine triphosphate pool
AOP:329Excessive reactive oxygen species production leading to mortality (3)Unclassified-0.4KE:1115
Increase, Reactive oxygen species
KE:1771
Decrease, Adenosine triphosphate pool
AOP:330Excessive reactive oxygen species production leading to mortality (4)Unclassified-0.2KE:1115
Increase, Reactive oxygen species
AOP:331Excessive reactive oxygen species leading to growth inhibition via oxidative DNA damage and reduced cell proliferationUnclassified-0.33KE:1821
Decrease, Cell proliferation
KE:1115
Increase, Reactive oxygen species
AOP:332Excessive reactive oxygen species leading to growth inhibition via lipid peroxidation and reduced cell proliferationUnclassified-0.4KE:1821
Decrease, Cell proliferation
KE:1115
Increase, Reactive oxygen species
AOP:333Excessive reactive oxygen species leading to growth inhibition via uncoupling of oxidative phosphorylationUnclassified-0.6KE:1821
Decrease, Cell proliferation
KE:1115
Increase, Reactive oxygen species
KE:1771
Decrease, Adenosine triphosphate pool
AOP:423Toxicological mechanisms of hepatocyte apoptosis through the PARP1 dependent cell death pathwayUnclassified-0.17KE:1115
Increase, Reactive oxygen species
AOP:438reactive oxygen species generation leading to increased cardiovascular morbidity and mortalityCardiovascular System Disease-0.08KE:1115
Increase, Reactive oxygen species
AOP:445Estrogen Receptor Alpha Agonism leads to Impaired ReproductionReproductive System Disease-0.12KE:1065
Activation, estrogen receptor alpha
AOP:446PM-related Adverse outcome pathway frameworks on various systemsRespiratory System Disease-0.05KE:1115
Increase, Reactive oxygen species
AOP:447Kidney failure induced by inhibition of mitochondrial electron transfer chain through apoptosis, inflammation and oxidative stress pathwaysUrinary System Disease-0.08KE:1917
Altered gene expression, NRF2 dependent antioxidant pathway
AOP:448ROS, inflammation, and activation of nAChR lead to increased incidence of cardiovascular morbidity and mortalityCardiovascular System Disease-0.06KE:1115
Increase, Reactive oxygen species
AOP:453Reactive oxygen species and subsequent oxidative stress lead to increased incidence of digestive morbidity and mortality in the general populationGastrointestinal System Disease-0.08KE:1115
Increase, Reactive oxygen species
AOP:463The AOP framwork on silica nanopariticles induced hepatoxicityGastrointestinal System Disease-0.09KE:1115
Increase, Reactive oxygen species
AOP:469Reactive oxygen speicies overproduction leading to increased digestive morbidity and mortality in generation populationGastrointestinal System Disease-0.08KE:1115
Increase, Reactive oxygen species
AOP:472DNA adduct formation leading to kidney failureUrinary System Disease-0.11KE:1115
Increase, Reactive oxygen species
AOP:488Increased reactive oxygen species production leading to decreased cognitive functionCognitive Disorder-0.14KE:1115
Increase, Reactive oxygen species
AOP:503Activation of uterine estrogen receptor-alfa leading to endometrial adenocarcinoma, via epigenetic modulationReproductive System Disease; CancerUnder Review0.17KE:1065
Activation, estrogen receptor alpha
AOP:505Reactive Oxygen Species (ROS) formation leads to cancer via inflammation pathwayCancer-0.2KE:1115
Increase, Reactive oxygen species
AOP:511The AOP framework on ROS-mediated oxidative stress induced vascular disrupting effectsCardiovascular System Disease-0.06KE:1115
Increase, Reactive oxygen species
AOP:513Reactive Oxygen (ROS) formation leads to cancer via Peroxisome proliferation-activated receptor (PPAR) pathwayCancer-0.2KE:1115
Increase, Reactive oxygen species
AOP:517Pregnane X Receptor (PXR) activation leads to liver steatosisGastrointestinal System Disease; Inherited Metabolic Disorder-0.2KE:239
Activation, Pregnane-X receptor, NR1l2
AOP:520Retinoic acid receptor agonism during neurodevelopment leading to impaired learning and memoryDevelopmental Disorder Of Mental Health-0.2KE:2201
Agonism, Retinoic acid receptor
AOP:523Retinoic acid receptor agonism during neurodevelopment leading to microcephalyCongenital Nervous System Abnormality; Nervous System Disease-0.2KE:2201
Agonism, Retinoic acid receptor
AOP:532Retinoic acid receptor agonism during cerebellar development leading to impaired locomotor functionUnclassified-0.2KE:2201
Agonism, Retinoic acid receptor
AOP:536Estrogen receptor agonism leading to reduced survival and population growth due to renal failureUnclassified-0.17KE:111
Agonism, Estrogen receptor
AOP:537Estrogen receptor agonism leads to reduced fecundity via increased vitellogenin in the liverUnclassified-0.2KE:111
Agonism, Estrogen receptor
AOP:540Oxidative Stress in the Fish Ovary Leads to Reproductive Impairment via Reduced Vitellogenin ProductionUnclassified-0.11KE:1115
Increase, Reactive oxygen species
AOP:541Excessive ROS generation leading to increased incidence of vascular calcification by VSMC phenotype switchingCardiovascular System Disease-0.08KE:1115
Increase, Reactive oxygen species
AOP:545Activation, Pregnane-X receptor, NR1l2 leads to increased plasma low-density lipoprotein (LDL) cholesterol via increased cholesterol synthesisUnclassified-0.2KE:239
Activation, Pregnane-X receptor, NR1l2
AOP:548Activation, Pregnane-X receptor, NR1l2 leads to increased plasma low-density lipoprotein (LDL) cholesterol via increased PCSK9 protein expressionUnclassified-0.2KE:239
Activation, Pregnane-X receptor, NR1l2

No associated AOPs with Level of Relevance 5
Glossary of Terms

AOP
Adverse Outcome Pathway
MIE
Molecular Initiating Event
KE
Key Event
AO
Adverse Outcome
Coverage score
The fraction of KEs within the AOP, that are mapped to the chemical-associated toxicological endpoints
Level of relevance
Qualitative rank based on the kind of associated KEs within the corresponding AOP
AO classification
The disease category corresponding to the AO in the AOP obtained from Disease Ontology
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DISCLAIMER

TICToK is a knowledgebase of chemicals found in tattoo inks, compiled from publicly available regulatory and scientific resources. The chemical classifications presented in this knowledgebase are derived from multiple publicly available resources and are provided solely for informational purposes, and they are neither authoritative nor binding. The chemical-AOP mappings compiled in this knowledgebase serve as plausible hypotheses for research, and further experimental validation is required to definitively establish these potential toxicity mechanisms. The authors bear no responsibility for any errors, omissions, or inconsistencies originating from these external sources. Users are advised to exercise independent judgment when interpreting chemical classifications and any other data provided in this resource. Importantly, our sole goal to build this resource on tattoo ink chemicals is to enable future basic research on this topic, and it does not necessarily reflect the views or objectives of our employers or funders.