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:27Cholestatic Liver Injury induced by Inhibition of the Bile Salt Export Pump (ABCB11)Gastrointestinal System DiseaseUnder Development0.12KE:288
Activation of specific nuclear receptors, Transcriptional change
AOP:122Prolyl hydroxylase inhibition leading to reproductive dysfunction via increased HIF1 heterodimer formationUnclassified-0.1KE:800
Decreased, Aromatase (Cyp19a1) mRNA
AOP:123Unknown MIE leading to reproductive dysfunction via increased HIF-1alpha transcriptionUnclassified-0.09KE:800
Decreased, Aromatase (Cyp19a1) mRNA
AOP:139Alkylation of DNA leading to cancer 1Cancer-0.25KE:155
Inadequate DNA repair
AOP:272Deposition of energy leading to lung cancerCancerWPHA/WNT Endorsed0.14KE:155
Inadequate DNA repair
AOP:296Oxidative DNA damage leading to chromosomal aberrations and mutationsGenetic Disease; Chromosomal DiseaseWPHA/WNT Endorsed0.2KE:155
Inadequate DNA repair
AOP:303Frustrated phagocytosis-induced lung cancerCancerUnder Development0.14KE:1669
Increased, DNA damage and mutation
AOP:322Alkylation of DNA leading to reduced sperm countReproductive System Disease-0.2KE:155
Inadequate DNA repair
AOP:397Bulky DNA adducts leading to mutationsGenetic DiseaseUnder Development0.33KE:155
Inadequate DNA repair
AOP:409Frustrated phagocytosis leads to malignant mesotheliomaCancer-0.12KE:1669
Increased, DNA damage and mutation
AOP:416Aryl hydrocarbon receptor activation leading to lung cancer through IL-6 toxicity pathwayCancer-0.17KE:1669
Increased, DNA damage and mutation
AOP:417Aryl hydrocarbon receptor activation leading to lung cancer through AHR-ARNT toxicity pathwayCancer-0.2KE:1669
Increased, DNA damage and mutation
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:451Interaction with lung resident cell membrane components leads to lung cancerCancer-0.11KE:1669
Increased, DNA damage and mutation
AOP:478Deposition of energy leading to occurrence of cataractsNervous System Disease; Monogenic DiseaseUnder Review0.1KE:155
Inadequate DNA repair
AOP:510Demethylation of PPAR promotor leading to vascular disrupting effectsCardiovascular System Disease-0.1KE:2165
Activation of PPAR

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:493ERa inactivation alters AT expansion and functions and leads to insulin resistance and metabolically unhealthy obesityAcquired Metabolic Disease-0.1KE:2129
Metabolically unhealthy Obesity

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:7Aromatase (Cyp19a1) reduction leading to impaired fertility in adult femaleReproductive System Disease; Endocrine System Disease; Reproductive System DiseaseUnder Review0.2KE:408
reduction in ovarian granulosa cells, Aromatase (Cyp19a1)
AOP:25Aromatase inhibition leading to reproductive dysfunctionUnclassifiedWPHA/WNT Endorsed0.12KE:36
Inhibition, Aromatase
AOP:346Aromatase inhibition leads to male-biased sex ratio via impacts on gonad differentiationUnclassifiedWPHA/WNT Endorsed0.2KE:36
Inhibition, Aromatase
AOP:443DNA damage and mutations leading to Metastatic Breast CancerThoracic Disease; CancerUnder Development0.2KE:1669
Increased, DNA damage and mutation
KE:155
Inadequate DNA repair
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:549Aromatase inhibition leads to reproductive toxicity (including growth and developmental toxicity) in adult female zebrafishUnclassified-0.12KE:36
Inhibition, Aromatase

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.