| AOP:4 | Ecdysone receptor agonism leading to incomplete ecdysis associated mortality | Unclassified | - | Insects, Crustaceans | 0.2 | KE:1265 | Increase, Fushi tarazu factor-1 gene expression |
| KE:1264 | Increase, Nuclear receptor E75b gene expression |
| AOP:8 | Upregulation of Thyroid Hormone Catabolism via Activation of Hepatic Nuclear Receptors, and Subsequent Adverse Neurodevelopmental Outcomes in Mammals | Nervous system disease | Under Development | Rat | 0.11 | KE:756 | Hippocampal gene expression, Altered |
| AOP:13 | Chronic binding of antagonist to N-methyl-D-aspartate receptors (NMDARs) during brain development induces impairment of learning and memory abilities | Developmental disorder of mental health | WPHA/WNT Endorsed | Human, Mouse, Monkey sp., Rat | 0.1 | KE:381 | Reduced levels of BDNF |
| AOP:17 | Binding of electrophilic chemicals to SH(thiol)-group of proteins and /or to seleno-proteins involved in protection against oxidative stress during brain development leads to impairment of learning and memory | Developmental disorder of mental health | WPHA/WNT Endorsed | Rat, Mouse, Human | 0.1 | KE:1493 | Increased Pro-inflammatory mediators |
| AOP:18 | PPARα activation in utero leading to impaired fertility in males | Reproductive system disease | Under Review | Human, Rat, Mouse | 0.12 | KE:289 | Decrease, Translocator protein (TSPO) |
| AOP:19 | Androgen receptor antagonism leading to adverse effects in the male foetus (mammals) | Reproductive system disease | - | | 0.2 | KE:286 | Altered, Transcription of genes by the androgen receptor |
| AOP:21 | Aryl hydrocarbon receptor activation leading to early life stage mortality, via increased COX-2 | Unclassified | WPHA/WNT Endorsed | Zebrafish, Medaka, Gallus gallus | 0.2 | KE:1269 | Increase, COX-2 expression |
| AOP:23 | Androgen receptor agonism leading to reproductive dysfunction (in repeat-spawning fish) | Unclassified | WPHA/WNT Endorsed | Pimephales promelas | 0.1 | KE:285 | Reduction, Vitellogenin synthesis in liver |
| AOP:25 | Aromatase inhibition leading to reproductive dysfunction | Unclassified | WPHA/WNT Endorsed | Fathead minnow, Medaka, Zebrafish | 0.12 | KE:285 | Reduction, Vitellogenin synthesis in liver |
| AOP:27 | Cholestatic Liver Injury induced by Inhibition of the Bile Salt Export Pump (ABCB11) | Gastrointestinal system disease | Under Development | Humans | 0.25 | KE:149 | Increase, Inflammation |
| KE:288 | Activation of specific nuclear receptors, Transcriptional change |
| AOP:30 | Estrogen receptor antagonism leading to reproductive dysfunction | Unclassified | Under Review | Zebra danio, Fathead minnow, Medaka | 0.17 | KE:285 | Reduction, Vitellogenin synthesis in liver |
| AOP:36 | Peroxisomal Fatty Acid Beta-Oxidation Inhibition Leading to Steatosis | Gastrointestinal system disease; Inherited metabolic disorder | - | | 0.12 | KE:140 | Decreased, HSD17B10 expression |
| AOP:38 | Protein Alkylation leading to Liver Fibrosis | Gastrointestinal system disease | WPHA/WNT Endorsed | Human, Rat | 0.14 | KE:1493 | Increased Pro-inflammatory mediators |
| AOP:39 | Covalent Binding, Protein, leading to Increase, Allergic Respiratory Hypersensitivity Response | Respiratory system disease | Under Development | Human, Mouse | 0.4 | KE:272 | Activation/Proliferation, T-cells |
| KE:1496 | Increased, secretion of proinflammatory mediators |
| AOP:41 | Sustained AhR Activation leading to Rodent Liver Tumours | Cancer; Gastrointestinal system disease | Under Review | Rattus sp. ABTC 42503, Mus sp. 2000082 | 0.2 | KE:139 | N/A, Hepatotoxicity, Hepatopathy, including a constellation of observable effects |
| AOP:42 | Inhibition of Thyroperoxidase and Subsequent Adverse Neurodevelopmental Outcomes in Mammals | Cognitive disorder | WPHA/WNT Endorsed | Human, Rat, Mouse | 0.12 | KE:756 | Hippocampal gene expression, Altered |
| AOP:48 | Binding of agonists to ionotropic glutamate receptors in adult brain causes excitotoxicity that mediates neuronal cell death, contributing to learning and memory impairment. | Developmental disorder of mental health | WPHA/WNT Endorsed | Human, Mouse, Rat | 0.11 | KE:352 | N/A, Neurodegeneration |
| AOP:54 | Inhibition of Na+/I- symporter (NIS) leads to learning and memory impairment | Developmental disorder of mental health | WPHA/WNT Endorsed | Homo sapiens, Rattus sp. | 0.1 | KE:381 | Reduced levels of BDNF |
| AOP:58 | NR1I3 (CAR) suppression leading to hepatic steatosis | Gastrointestinal system disease; Inherited metabolic disorder | - | Human, Mouse, Rat | 0.19 | KE:54 | Up Regulation, CD36 |
| KE:463 | Up Regulation, FAS |
| KE:462 | Up Regulation, SCD-1 |
| AOP:60 | NR1I2 (Pregnane X Receptor, PXR) activation leading to hepatic steatosis | Gastrointestinal system disease; Inherited metabolic disorder | - | | 0.33 | KE:474 | Down Regulation, HMGCS2 |
| KE:462 | Up Regulation, SCD-1 |
| KE:472 | Down Regulation, CPT1A |
| KE:54 | Up Regulation, CD36 |
| AOP:96 | Axonal sodium channel modulation leading to acute mortality | Unclassified | - | Insects, Fish | 0.17 | KE:602 | Increased, Ataxia, paralysis, or hyperactivity |
| AOP:110 | Inhibition of iodide pump activity leading to follicular cell adenomas and carcinomas (in rat and mouse) | Cancer; Endocrine system disease | - | Rattus norvegicus, Mus musculus | 0.14 | KE:739 | Increase, Hypertrophy and proliferation (follicular cell) |
| AOP:113 | Glutamate-gated chloride channel activation leading to acute mortality | Unclassified | - | Bombus impatiens, Chaetanaphothrips orchidii, Radopholus similis, Daphnia magna, Orius insidiosus, Hymenoptera, Helicoverpa zea, Lepidoptera, Liriomyza trifolii, Orius isidiosus, Acyrthosiphon kondoi | 0.17 | KE:764 | N/A, Ataxia, paralysis, or hyperactivity |
| AOP:114 | HPPD inhibition leading to corneal papillomas and carcinomas (in rat) | Cancer | - | Rattus norvegicus | 0.33 | KE:778 | Increase, Regenerative cell proliferation (corneal cells) |
| KE:777 | Increase, Inflammation (corneal cells) |
| AOP:115 | Epithelial cytotoxicity leading to forestomach tumors (in mouse and rat) | Cancer | - | Mus musculus, Rattus norvegicus | 0.4 | KE:149 | Increase, Inflammation |
| KE:781 | Increase, Regenerative cell proliferation (forestomach epithelial cells) |
| AOP:119 | Inhibition of thyroid peroxidase leading to follicular cell adenomas and carcinomas (in rat and mouse) | Cancer; Endocrine system disease | - | Rattus norvegicus, Mus musculus | 0.14 | KE:739 | Increase, Hypertrophy and proliferation (follicular cell) |
| AOP:121 | Urinary bladder calculi leading to urothelial papillomas and carcinomas (in mouse and rat) | Cancer; Urinary system disease | - | Mus musculus, Rattus norvegicus | 0.2 | KE:795 | Increase, Regenerative cell proliferation (urothelial cells) |
| AOP:122 | Prolyl hydroxylase inhibition leading to reproductive dysfunction via increased HIF1 heterodimer formation | Unclassified | - | Pimephales promelas | 0.2 | KE:799 | Increased, HIF-1 heterodimer |
| KE:285 | Reduction, Vitellogenin synthesis in liver |
| AOP:123 | Unknown MIE leading to reproductive dysfunction via increased HIF-1alpha transcription | Unclassified | - | Pimephales promelas | 0.27 | KE:802 | Increased, HIF-1 alpha transcription |
| KE:799 | Increased, HIF-1 heterodimer |
| KE:285 | Reduction, Vitellogenin synthesis in liver |
| AOP:124 | HMG-CoA reductase inhibition leading to decreased fertility | Reproductive system disease | - | Rattus rattus | 0.17 | KE:807 | Decreased, cholesterol |
| AOP:131 | Aryl hydrocarbon receptor activation leading to uroporphyria | Inherited metabolic disorder | WPHA/WNT Endorsed | Mouse, Rat, Human, Japanese quail, Chicken, Herring gull, Common Starling | 0.17 | KE:850 | Induction, CYP1A2/CYP1A5 |
| AOP:134 | Sodium Iodide Symporter (NIS) Inhibition and Subsequent Adverse Neurodevelopmental Outcomes in Mammals | Cognitive disorder | - | Rat, Homo sapiens | 0.11 | KE:756 | Hippocampal gene expression, Altered |
| AOP:136 | Intracellular Acidification Induced Olfactory Epithelial Injury Leading to Site of Contact Nasal Tumors | Benign neoplasm; Respiratory system disease | Under Review | | 0.14 | KE:870 | Increase, Cell Proliferation |
| AOP:144 | Endocytic lysosomal uptake leading to liver fibrosis | Gastrointestinal system disease | Under Review | Human, Mouse, Rat | 0.11 | KE:1493 | Increased Pro-inflammatory mediators |
| AOP:148 | EGFR Activation Leading to Decreased Lung Function | Respiratory system disease | Under Development | Human, Mouse, Rat | 0.25 | KE:962 | Increase, Mucin production |
| AOP:150 | Aryl hydrocarbon receptor activation leading to early life stage mortality, via reduced VEGF | Unclassified | WPHA/WNT Endorsed | Chicken, Zebrafish, Mouse, Rattus norvegicus | 0.14 | KE:948 | reduced production, VEGF |
| AOP:151 | AhR activation leading to preeclampsia | Cardiovascular system disease | Under Development | Homo sapiens, Mus musculus | 0.14 | KE:948 | reduced production, VEGF |
| AOP:164 | Beta-2 adrenergic agonist activity leading to mesovarian leiomyomas in the rat and mouse | Cancer; Reproductive system disease | - | CD-1 mouse, SD rat | 0.17 | KE:1042 | Proliferation/Clonal Expansion, smooth muscle |
| AOP:167 | Early-life estrogen receptor activity leading to endometrial carcinoma in the mouse. | Reproductive system disease; Cancer | - | Mouse, Homo sapiens | 0.29 | KE:1067 | Proliferation/Clonal Expansion, aberrant basal cells |
| KE:1066 | Promotion, SIX-1 postive basal-type progenitor cells |
| AOP:173 | Substance interaction with the pulmonary resident cell membrane components leading to pulmonary fibrosis | Musculoskeletal system disease; Respiratory system disease | WPHA/WNT Endorsed | Human, Mouse, Rat | 0.25 | KE:1497 | Increased, recruitment of inflammatory cells |
| KE:1496 | Increased, secretion of proinflammatory mediators |
| AOP:201 | Juvenile hormone receptor agonism leading to male offspring induction associated population decline | Unclassified | - | Daphnia magna, Daphnia pulex | 0.17 | KE:1206 | Induction, Doublesex1 gene |
| AOP:206 | Peroxisome proliferator-activated receptors γ inactivation leading to lung fibrosis | Musculoskeletal system disease; Respiratory system disease | Under Development | Homo sapiens | 0.17 | KE:149 | Increase, Inflammation |
| AOP:237 | Substance interaction with lung resident cell membrane components leading to atherosclerosis | Cardiovascular system disease | Under Development | Human, Mouse | 0.2 | KE:1496 | Increased, secretion of proinflammatory mediators |
| AOP:275 | Histone deacetylase inhibition leads to neural tube defects | Neural tube defect | - | | 0.2 | KE:1239 | Altered, Gene Expression |
| AOP:280 | α-diketone-induced bronchiolitis obliterans | Musculoskeletal system disease; Respiratory system disease | - | | 0.14 | KE:149 | Increase, Inflammation |
| AOP:293 | Increased DNA damage leading to increased risk of breast cancer | Genetic disease; Thoracic disease; Cancer | Under Development | Rattus rattus, Mus musculus | 0.22 | KE:1493 | Increased Pro-inflammatory mediators |
| KE:1182 | Increase, Cell Proliferation (Epithelial Cells) |
| AOP:294 | Increased reactive oxygen and nitrogen species (RONS) leading to increased risk of breast cancer | Genetic disease; Thoracic disease; Cancer | Under Development | | 0.22 | KE:1493 | Increased Pro-inflammatory mediators |
| KE:1182 | Increase, Cell Proliferation (Epithelial Cells) |
| AOP:300 | Thyroid Receptor Antagonism and Subsequent Adverse Neurodevelopmental Outcomes in Mammals | Cognitive disorder | Under Development | Human, Mouse | 0.2 | KE:756 | Hippocampal gene expression, Altered |
| AOP:305 | 5α-reductase inhibition leading to short anogenital distance (AGD) in male (mammalian) offspring | Unclassified | Under Development | Rat, Human, Mouse | 0.2 | KE:286 | Altered, Transcription of genes by the androgen receptor |
| AOP:306 | Androgen receptor (AR) antagonism leading to short anogenital distance (AGD) in male (mammalian) offspring | Unclassified | Under Development | Rat, Human, Mouse | 0.25 | KE:286 | Altered, Transcription of genes by the androgen receptor |
| AOP:310 | Embryonic Activation of the AHR leading to Reproductive failure, via epigenetic down-regulation of GnRHR | Unclassified | - | Zebrafish | 0.08 | KE:285 | Reduction, Vitellogenin synthesis in liver |
| AOP:320 | Binding of SARS-CoV-2 to ACE2 receptor leading to acute respiratory distress associated mortality | Unclassified | Under Development | Homo sapiens | 0.11 | KE:1496 | Increased, secretion of proinflammatory mediators |
| AOP:323 | PPARalpha Agonism Leading to Decreased Viable Offspring via Decreased 11-Ketotestosterone | Unclassified | - | Teleost fish | 0.17 | KE:807 | Decreased, cholesterol |
| AOP:335 | AOP for urothelial carcinogenesis due to chemical cytotoxicity by mitochondrial impairment | Cancer; Urinary system disease | - | Rat | 0.2 | KE:795 | Increase, Regenerative cell proliferation (urothelial cells) |
| AOP:344 | Androgen receptor (AR) antagonism leading to nipple retention (NR) in male (mammalian) offspring | Unclassified | Under Development | | 0.25 | KE:286 | Altered, Transcription of genes by the androgen receptor |
| AOP:345 | Androgen receptor (AR) antagonism leading to decreased fertility in females | Endocrine system disease; Reproductive system disease; Reproductive system disease | Under Development | Mammals | 0.17 | KE:286 | Altered, Transcription of genes by the androgen receptor |
| AOP:372 | Androgen receptor antagonism leading to testicular cancer | Endocrine system disease; Reproductive system disease; Cancer | - | | 0.2 | KE:286 | Altered, Transcription of genes by the androgen receptor |
| AOP:374 | Binding of Sars-CoV-2 spike protein to ACE 2 receptors expressed on brain cells (neuronal and non-neuronal) leads to neuroinflammation resulting in encephalitis | Nervous system disease | Under Development | Human | 0.25 | KE:352 | N/A, Neurodegeneration |
| AOP:382 | Angiotensin II type 1 receptor (AT1R) agonism leading to lung fibrosis | Musculoskeletal system disease; Respiratory system disease | Under Development | | 0.17 | KE:1496 | Increased, secretion of proinflammatory mediators |
| AOP:409 | Frustrated phagocytosis leads to malignant mesothelioma | Cancer | - | | 0.38 | KE:870 | Increase, Cell Proliferation |
| KE:1497 | Increased, recruitment of inflammatory cells |
| KE:1496 | Increased, secretion of proinflammatory mediators |
| AOP:432 | Deposition of Energy by Ionizing Radiation leading to Acute Myeloid Leukemia | Hematopoietic system disease; Cancer | - | Homo sapiens, Mus musculus | 0.18 | KE:1493 | Increased Pro-inflammatory mediators |
| KE:870 | Increase, Cell Proliferation |
| AOP:439 | Activation of the AhR leading to metastatic breast cancer | Thoracic disease; Cancer | Under Development | Humans, Mice | 0.22 | KE:1971 | Increased, tumor growth |
| KE:149 | Increase, Inflammation |
| AOP:443 | DNA damage and mutations leading to Metastatic Breast Cancer | Thoracic disease; Cancer | Under Development | Human and other cells in culture, Human, Mice, Rat, Canine heartworm nematode, Yeast | 0.1 | KE:1554 | Increase Chromosomal Aberrations |
| AOP:450 | Inhibition of AChE and activation of CYP2E1 leading to sensory axonal peripheral neuropathy and mortality | Nervous system disease | - | Rattus norvegicus, Mus musculus, Homo sapiens | 0.14 | KE:352 | N/A, Neurodegeneration |
| AOP:455 | Aryl hydrocarbon receptor activation leading to early life stage mortality via sox9 repression induced impeded craniofacial development | Musculoskeletal system disease | Under Review | Zebrafish, Mouse, Human, Sebastiscus marmoratus, Salmo salar, Chicken | 0.33 | KE:2020 | Decrease, sox9 expression |
| KE:2021 | Increase, slincR expression |
| AOP:456 | Aryl hydrocarbon receptor activation leading to early life stage mortality via sox9 repression induced cardiovascular toxicity | Unclassified | Under Review | Zebrafish, Mouse, Human, Chicken | 0.33 | KE:2020 | Decrease, sox9 expression |
| KE:2021 | Increase, slincR expression |
| AOP:458 | AhR activation in the liver leading to Subsequent Adverse Neurodevelopmental Outcomes in Mammals | Cognitive disorder | - | Rat, Mouse, Monkey, Human | 0.12 | KE:756 | Hippocampal gene expression, Altered |
| AOP:459 | AhR activation in the thyroid leading to Subsequent Adverse Neurodevelopmental Outcomes in Mammals | Cognitive disorder | - | Human, Mouse, Rat | 0.22 | KE:756 | Hippocampal gene expression, Altered |
| KE:850 | Induction, CYP1A2/CYP1A5 |
| AOP:460 | Antagonism of Smoothened receptor leading to orofacial clefting | Unclassified | Under Development | Mouse | 0.11 | KE:2040 | Decrease, GLI1/2 target gene expression |
| AOP:470 | Deposition of energy leads to abnormal vascular remodeling | Cardiovascular system disease | Under Review | Human, Rat, Mouse, Rabbit | 0.12 | KE:1493 | Increased Pro-inflammatory mediators |
| AOP:472 | DNA adduct formation leading to kidney failure | Urinary system disease | - | | 0.11 | KE:149 | Increase, Inflammation |
| AOP:478 | Deposition of energy leading to occurrence of cataracts | Nervous system disease; Monogenic disease | Under Review | Human, Mouse, Rat, Rhesus monkeys, Rabbit, Guinea pig | 0.1 | KE:870 | Increase, Cell Proliferation |
| AOP:493 | ERa inactivation alters AT expansion and functions and leads to insulin resistance and metabolically unhealthy obesity | Acquired metabolic disease | - | Mus musculus, Homo sapiens | 0.2 | KE:2125 | Increased fat mass |
| KE:1497 | Increased, recruitment of inflammatory cells |
| AOP:495 | Androgen receptor activation leading to prostate cancer | Reproductive system disease; Cancer | - | | 0.11 | KE:286 | Altered, Transcription of genes by the androgen receptor |
| AOP:496 | Androgen receptor agonism leading to reproduction dysfunction (in zebrafish) | Unclassified | - | Zebrafish | 0.1 | KE:286 | Altered, Transcription of genes by the androgen receptor |
| AOP:500 | Activation of MEK-ERK1/2 leads to deficits in learning and cognition via ROS and apoptosis | Developmental disorder of mental health | - | Rattus norvegicus, Mus musculus, Homo sapiens | 0.14 | KE:352 | N/A, Neurodegeneration |
| AOP:517 | Pregnane X Receptor (PXR) activation leads to liver steatosis | Gastrointestinal system disease; Inherited metabolic disorder | - | Vertebrates | 0.2 | KE:54 | Up Regulation, CD36 |
| AOP:529 | Perfluorooctanesulfonic acid (PFOS) binding to peroxisome proliferator-activated receptors (PPARs) causes dysregulation of lipid metabolism and subsequent liver steatosis | Gastrointestinal system disease; Inherited metabolic disorder | - | Vertebrates, Mouse, Rat, Zebrafish | 0.12 | KE:2224 | Dysregulation of transcriptional expression within PPAR signaling network |
| AOP:533 | Retinoic acid receptor antagonism during neurodevelopment leading to impaired learning and memory | Developmental disorder of mental health | - | | 0.17 | KE:1239 | Altered, Gene Expression |
| AOP:536 | Estrogen receptor agonism leading to reduced survival and population growth due to renal failure | Unclassified | - | | 0.17 | KE:307 | Increase, Vitellogenin synthesis in liver |
| AOP:537 | Estrogen receptor agonism leads to reduced fecundity via increased vitellogenin in the liver | Unclassified | - | | 0.2 | KE:307 | Increase, Vitellogenin synthesis in liver |
| AOP:540 | Oxidative Stress in the Fish Ovary Leads to Reproductive Impairment via Reduced Vitellogenin Production | Unclassified | - | | 0.11 | KE:285 | Reduction, Vitellogenin synthesis in liver |
| AOP:541 | Excessive ROS generation leading to increased incidence of vascular calcification by VSMC phenotype switching | Cardiovascular system disease | - | | 0.08 | KE:1493 | Increased Pro-inflammatory mediators |
| AOP:544 | Inhibition of neuropathy target esterase leading to delayed neuropathy via increased inflammation | Nervous system disease | - | Homo sapiens, Mus musculus | 0.17 | KE:149 | Increase, Inflammation |
| AOP:569 | Decreased DNA methylation of FAM50B/PTCHD3 leading to IQ loss of children via PI3K-Akt pathway | Developmental disorder of mental health | - | | 0.17 | KE:2195 | Increase, CNS Neural cell death |