| AOP:4 | Ecdysone receptor agonism leading to incomplete ecdysis associated mortality | Unclassified | - | Insects, Crustaceans | 0.1 | KE:993 | Decrease, Abdominal muscle contraction |
| AOP:7 | Aromatase (Cyp19a1) reduction leading to impaired fertility in adult female | Reproductive system disease; Endocrine system disease; Reproductive system disease | Under Review | Rat, Mouse, Human | 0.4 | KE:219 | Reduction, Plasma 17beta-estradiol concentrations |
| KE:3 | Reduction, 17beta-estradiol synthesis by ovarian granulosa cells |
| AOP:10 | Binding to the picrotoxin site of ionotropic GABA receptors leading to epileptic seizures in adult brain | Nervous system disease | WPHA/WNT Endorsed | Human, Mouse, Rat, Bobwhite quail, Zebrafish | 0.17 | KE:616 | Occurrence, A paroxysmal depolarizing shift |
| AOP:16 | Acetylcholinesterase inhibition leading to acute mortality | Unclassified | Under Development | | 0.14 | KE:1703 | Dysregulation of heart rate and vascular tone |
| AOP:18 | PPARα activation in utero leading to impaired fertility in males | Reproductive system disease | Under Review | Human, Rat, Mouse | 0.12 | KE:1690 | Decrease, circulating testosterone levels |
| 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:317 | Altered, Cardiovascular development/function |
| AOP:23 | Androgen receptor agonism leading to reproductive dysfunction (in repeat-spawning fish) | Unclassified | WPHA/WNT Endorsed | Pimephales promelas | 0.2 | KE:219 | Reduction, Plasma 17beta-estradiol concentrations |
| KE:3 | Reduction, 17beta-estradiol synthesis by ovarian granulosa cells |
| AOP:25 | Aromatase inhibition leading to reproductive dysfunction | Unclassified | WPHA/WNT Endorsed | Fathead minnow, Medaka, Zebrafish | 0.25 | KE:219 | Reduction, Plasma 17beta-estradiol concentrations |
| KE:3 | Reduction, 17beta-estradiol synthesis by ovarian granulosa cells |
| AOP:27 | Cholestatic Liver Injury induced by Inhibition of the Bile Salt Export Pump (ABCB11) | Gastrointestinal system disease | Under Development | Humans | 0.12 | KE:1115 | Increase, Reactive oxygen species |
| AOP:37 | PPARα activation leading to hepatocellular adenomas and carcinomas in rodents | Cancer; Gastrointestinal system disease | Under Development | Mouse, Rat | 0.2 | KE:716 | Increase, cell proliferation (hepatocytes) |
| AOP:39 | Covalent Binding, Protein, leading to Increase, Allergic Respiratory Hypersensitivity Response | Respiratory system disease | Under Development | Human, Mouse | 0.2 | KE:272 | Activation/Proliferation, T-cells |
| AOP:41 | Sustained AhR Activation leading to Rodent Liver Tumours | Cancer; Gastrointestinal system disease | Under Review | Rattus sp. ABTC 42503, Mus sp. 2000082 | 0.4 | KE:853 | Changes/Inhibition, Cellular Homeostasis and Apoptosis |
| KE:139 | N/A, Hepatotoxicity, Hepatopathy, including a constellation of observable effects |
| AOP:64 | Glucocorticoid Receptor (GR) Mediated Adult Leydig Cell Dysfunction Leading to Decreased Male Fertility | Reproductive system disease | - | Rattus norvegicus | 0.43 | KE:520 | Decreased sperm quantity or quality in the adult, Decreased fertility |
| KE:496 | Increased apoptosis, decreased fetal/adult Leydig Cells |
| KE:1690 | Decrease, circulating testosterone levels |
| AOP:73 | Xenobiotic Inhibition of Dopamine-beta-Hydroxylase and subsequent reduced fecundity | Unclassified | - | | 0.15 | KE:10059 | Decreased LH surge for 24 hours |
| KE:531 | Decreased, LH Surge |
| AOP:91 | Sodium channel inhibition leading to reduced survival | Unclassified | - | Medaka, Gammarus pulex, Hydra | 0.17 | KE:585 | Decreased, Sodium conductance 1 |
| AOP:93 | sodium channel inhibition leading to increased predation | Unclassified | - | | 0.25 | KE:585 | Decreased, Sodium conductance 1 |
| AOP:94 | Sodium channel inhibition leading to congenital malformations | Unclassified | - | Human, Rat, Mouse | 0.33 | KE:585 | Decreased, Sodium conductance 1 |
| KE:444 | Increased, Atrioventricular block and bradycardia |
| AOP:95 | Ether-a-go-go (ERG) voltage-gated potassium channel inhibition leading to reduced survival | Unclassified | - | | 0.17 | KE:585 | Decreased, Sodium conductance 1 |
| AOP:96 | Axonal sodium channel modulation leading to acute mortality | Unclassified | - | Insects, Fish | 0.33 | KE:602 | Increased, Ataxia, paralysis, or hyperactivity |
| KE:599 | prolonged, Depolarization of neuronal membrane |
| AOP:102 | Cyclooxygenase inhibition leading to reproductive dysfunction via interference with meiotic prophase I /metaphase I transition | Reproductive system disease | - | Goldfish, Human, Rat, Mouse | 0.1 | KE:690 | Reduced, Luteinizing hormone (LH), plasma |
| AOP:103 | Cyclooxygenase inhibition leading to reproductive dysfunction via interference with spindle assembly checkpoint | Reproductive system disease | - | Goldfish, Human, Rat, Mouse | 0.1 | KE:690 | Reduced, Luteinizing hormone (LH), plasma |
| AOP:104 | Altered ion channel activity leading impaired heart function | Unclassified | - | | 0.25 | KE:698 | Altered, Action Potential |
| AOP:107 | Constitutive androstane receptor activation leading to hepatocellular adenomas and carcinomas in the mouse and the rat | Cancer; Gastrointestinal system disease | Under Review | Rattus norvegicus, Mus musculus | 0.2 | KE:716 | Increase, cell proliferation (hepatocytes) |
| 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:112 | Increased dopaminergic activity leading to endometrial adenocarcinomas (in Wistar rat) | Reproductive system disease; Cancer | - | Rattus norvegicus | 0.17 | KE:749 | Decreased, Progesterone from corpus luteum |
| 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 | 0.33 | KE:763 | hyperpolarisation, neuron |
| KE:764 | N/A, Ataxia, paralysis, or hyperactivity |
| AOP:114 | HPPD inhibition leading to corneal papillomas and carcinomas (in rat) | Cancer | - | Rattus norvegicus | 0.17 | KE:778 | Increase, Regenerative cell proliferation (corneal cells) |
| AOP:115 | Epithelial cytotoxicity leading to forestomach tumors (in mouse and rat) | Cancer | - | Mus musculus, Rattus norvegicus | 0.2 | KE:781 | Increase, Regenerative cell proliferation (forestomach epithelial cells) |
| AOP:117 | Androgen receptor activation leading to hepatocellular adenomas and carcinomas (in mouse and rat) | Cancer; Gastrointestinal system disease | Under Development | Mus musculus, Rattus norvegicus | 0.25 | KE:716 | Increase, cell proliferation (hepatocytes) |
| 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:120 | Inhibition of 5α-reductase leading to Leydig cell tumors (in rat) | Cancer; Reproductive system disease | - | Rattus norvegicus, Mus musculus | 0.2 | KE:1690 | Decrease, circulating testosterone levels |
| 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:219 | Reduction, Plasma 17beta-estradiol concentrations |
| KE:3 | Reduction, 17beta-estradiol synthesis by ovarian granulosa cells |
| AOP:123 | Unknown MIE leading to reproductive dysfunction via increased HIF-1alpha transcription | Unclassified | - | Pimephales promelas | 0.18 | KE:219 | Reduction, Plasma 17beta-estradiol concentrations |
| KE:3 | Reduction, 17beta-estradiol synthesis by ovarian granulosa cells |
| AOP:126 | Alpha-noradrenergic antagonism leads to reduced fecundity via delayed ovulation | Unclassified | - | | 0.15 | KE:10059 | Decreased LH surge for 24 hours |
| KE:531 | Decreased, LH Surge |
| 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: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:317 | Altered, Cardiovascular development/function |
| 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 | 0.14 | KE:1067 | Proliferation/Clonal Expansion, aberrant basal cells |
| AOP:207 | NADPH oxidase and P38 MAPK activation leading to reproductive failure in Caenorhabditis elegans | Reproductive system disease | - | Caenorhabditis elegans | 0.25 | KE:1115 | Increase, Reactive oxygen species |
| KE:1262 | Apoptosis |
| AOP:212 | Histone deacetylase inhibition leading to testicular atrophy | Reproductive system disease | WPHA/WNT Endorsed | Rat, Human, Mouse | 0.17 | KE:1262 | Apoptosis |
| AOP:213 | Inhibition of fatty acid beta oxidation leading to nonalcoholic steatohepatitis (NASH) | Gastrointestinal system disease; Inherited metabolic disorder | - | Vertebrates | 0.17 | KE:1115 | Increase, Reactive oxygen species |
| AOP:219 | Inhibition of CYP7B activity leads to decreased reproductive success via decreased sexual behavior | Unclassified | - | Japanese quail, Cynops pyrrhogaster | 0.17 | KE:1390 | Sexual behavior, decreased |
| AOP:233 | Mu Opioid Receptor Agonism leading to Analgesia via K Channel Opening | Developmental disorder of mental health | - | | 0.2 | KE:763 | hyperpolarisation, neuron |
| AOP:235 | Serotonin 1A Receptor Agonism leading to Anti-depressant Activity via K Channel Opening | Unclassified | - | | 0.2 | KE:763 | hyperpolarisation, neuron |
| AOP:271 | Inhibition of thyroid peroxidase leading to impaired fertility in fish | Unclassified | Under Development | Fish | 0.2 | KE:219 | Reduction, Plasma 17beta-estradiol concentrations |
| AOP:272 | Deposition of energy leading to lung cancer | Cancer | WPHA/WNT Endorsed | Human, Rat, Mouse | 0.14 | KE:870 | Increase, Cell Proliferation |
| AOP:277 | Impaired IL-1R1 signaling leading to Impaired T-Cell Dependent Antibody Response | Immune system disease | WPHA/WNT Endorsed | Homo sapiens, Mus musculus, Rattus norvegicus | 0.25 | KE:202 | Inhibition, Nuclear factor kappa B (NF-kB) |
| AOP:286 | Mitochondrial complex III antagonism leading to growth inhibition (1) | Unclassified | - | Lemna minor, Daphnia magna, Danio rerio | 0.25 | KE:1821 | Decrease, Cell proliferation |
| AOP:288 | Inhibition of 17α-hydrolase/C 10,20-lyase (Cyp17A1) activity leads to birth reproductive defects (cryptorchidism) in male (mammals) | Endocrine system disease | - | Human, Rat | 0.12 | KE:1690 | Decrease, circulating testosterone levels |
| AOP:289 | Inhibition of 5α-reductase leading to impaired fecundity in female fish | Unclassified | Under Development | Fish | 0.17 | KE:219 | Reduction, Plasma 17beta-estradiol concentrations |
| AOP:290 | Mitochondrial ATP synthase antagonism leading to growth inhibition (1) | Unclassified | - | Daphnia magna | 0.25 | KE:1821 | Decrease, Cell proliferation |
| AOP:293 | Increased DNA damage leading to increased risk of breast cancer | Genetic disease; Thoracic disease; Cancer | Under Development | Rattus rattus, Mus musculus | 0.11 | 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 | | 0.11 | KE:1182 | Increase, Cell Proliferation (Epithelial Cells) |
| AOP:299 | Deposition of energy leading to population decline via DNA oxidation and follicular atresia | Unclassified | - | | 0.14 | KE:1115 | Increase, Reactive oxygen species |
| AOP:303 | Frustrated phagocytosis-induced lung cancer | Cancer | Under Development | Mammals | 0.29 | KE:870 | Increase, Cell Proliferation |
| KE:1115 | Increase, Reactive oxygen species |
| AOP:309 | Luteinizing hormone receptor antagonism leading to reproductive dysfunction | Unclassified | - | Fish | 0.29 | KE:1693 | Reduction, Plasma progesterone concentration |
| KE:1692 | Reduction, Progesterone synthesis |
| AOP:310 | Embryonic Activation of the AHR leading to Reproductive failure, via epigenetic down-regulation of GnRHR | Unclassified | - | Zebrafish | 0.17 | KE:219 | Reduction, Plasma 17beta-estradiol concentrations |
| KE:3 | Reduction, 17beta-estradiol synthesis by ovarian granulosa cells |
| AOP:311 | Deposition of energy leading to population decline via DNA oxidation and oocyte apoptosis | Unclassified | - | Daphnia magna, Fish | 0.14 | KE:1115 | Increase, Reactive oxygen species |
| 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:346 | Aromatase inhibition leads to male-biased sex ratio via impacts on gonad differentiation | Unclassified | WPHA/WNT Endorsed | Zebrafish, Oreochromis niloticus, Chinook salmon, Fathead minnow, European sea bass | 0.2 | KE:1789 | Reduction, 17beta-estradiol synthesis by the undifferentiated gonad |
| AOP:382 | Angiotensin II type 1 receptor (AT1R) agonism leading to lung fibrosis | Musculoskeletal system disease; Respiratory system disease | Under Development | | 0.17 | KE:1115 | Increase, Reactive oxygen species |
| AOP:383 | Inhibition of Angiotensin-converting enzyme 2 leading to liver fibrosis | Gastrointestinal system disease | Under Development | | 0.17 | KE:1115 | Increase, Reactive oxygen species |
| AOP:384 | Hyperactivation of ACE/Ang-II/AT1R axis leading to chronic kidney disease | Urinary system disease | - | | 0.17 | KE:1115 | Increase, Reactive oxygen species |
| AOP:386 | Deposition of ionizing energy leading to population decline via inhibition of photosynthesis | Reproductive system disease | - | Lemna minor, Chlamydomonas reinhardtii | 0.12 | KE:1115 | Increase, Reactive oxygen species |
| AOP:387 | Deposition of ionising energy leading to population decline via mitochondrial dysfunction | Reproductive system disease | - | Lemna minor | 0.12 | KE:1115 | Increase, Reactive oxygen species |
| AOP:399 | Inhibition of Fyna leading to increased mortality via decreased eye size (Microphthalmos) | Unclassified | - | Zebrafish | 0.12 | KE:1821 | Decrease, Cell proliferation |
| AOP:406 | SARS-CoV-2 infection leading to hyperinflammation | Unclassified | - | | 0.17 | KE:1869 | Diminished protective oxidative stress response |
| AOP:409 | Frustrated phagocytosis leads to malignant mesothelioma | Cancer | - | | 0.25 | KE:870 | Increase, Cell Proliferation |
| KE:1115 | Increase, Reactive oxygen species |
| AOP:413 | Oxidation and antagonism of reduced glutathione leading to mortality via acute renal failure | Unclassified | - | Fish, Mice | 0.33 | KE:1607 | Increase, Necrosis |
| KE:1115 | Increase, Reactive oxygen species |
| AOP:416 | Aryl hydrocarbon receptor activation leading to lung cancer through IL-6 toxicity pathway | Cancer | - | | 0.17 | KE:1115 | Increase, Reactive oxygen species |
| AOP:418 | Aryl hydrocarbon receptor activation leading to impaired lung function through AHR-ARNT toxicity pathway | Respiratory system disease | - | | 0.2 | KE:1115 | Increase, Reactive oxygen species |
| AOP:419 | Aryl hydrocarbon receptor activation leading to impaired lung function through P53 toxicity pathway | Respiratory system disease | - | | 0.25 | KE:1262 | Apoptosis |
| AOP:420 | Aryl hydrocarbon receptor activation leading to lung cancer through sustained NRF2 toxicity pathway | Cancer | - | | 0.25 | KE:870 | Increase, Cell Proliferation |
| AOP:432 | Deposition of Energy by Ionizing Radiation leading to Acute Myeloid Leukemia | Hematopoietic system disease; Cancer | - | Homo sapiens, Mus musculus | 0.09 | KE:870 | Increase, Cell Proliferation |
| AOP:439 | Activation of the AhR leading to metastatic breast cancer | Thoracic disease; Cancer | Under Development | Humans, Mice | 0.11 | KE:1262 | Apoptosis |
| AOP:441 | Ionizing radiation-induced DNA damage leads to microcephaly via apoptosis and premature cell differentiation | Congenital nervous system abnormality; Nervous system disease | - | Homo sapiens, Mus musculus musculus, Rattus norvegicus | 0.14 | KE:1262 | Apoptosis |
| AOP:451 | Interaction with lung resident cell membrane components leads to lung cancer | Cancer | - | Human | 0.22 | KE:870 | Increase, Cell Proliferation |
| KE:1115 | Increase, Reactive oxygen species |
| AOP:452 | Adverse outcome pathway of PM-induced respiratory toxicity | Respiratory system disease | - | | 0.09 | KE:1262 | Apoptosis |
| 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 | 0.17 | KE:317 | Altered, Cardiovascular development/function |
| AOP:460 | Antagonism of Smoothened receptor leading to orofacial clefting | Unclassified | Under Development | Mouse | 0.22 | KE:1821 | Decrease, Cell proliferation |
| KE:1262 | Apoptosis |
| AOP:465 | Alcohol dehydrogenase leading to reproductive dysfunction | Unclassified | - | | 0.12 | KE:2050 | Increase, developmental abnormalities |
| AOP:467 | Knickkopf leading to mortality | Unclassified | - | | 0.11 | KE:2050 | Increase, developmental abnormalities |
| 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:491 | Decrease, GLI1/2 target gene expression leads to orofacial clefting | Unclassified | Under Development | Mouse | 0.33 | KE:1821 | Decrease, Cell proliferation |
| KE:1262 | Apoptosis |
| AOP:492 | Glutathione conjugation leading to reproductive dysfunction via oxidative stress | Reproductive system disease | - | Mammals, Fish | 0.2 | KE:1115 | Increase, Reactive oxygen species |
| 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 | 0.1 | KE:2125 | Increased fat mass |
| AOP:495 | Androgen receptor activation leading to prostate cancer | Reproductive system disease; Cancer | - | | 0.11 | KE:1183 | Decreased, Apoptosis (Epithelial Cells) |
| AOP:496 | Androgen receptor agonism leading to reproduction dysfunction (in zebrafish) | Unclassified | - | Zebrafish | 0.2 | KE:219 | Reduction, Plasma 17beta-estradiol concentrations |
| KE:1690 | Decrease, circulating testosterone levels |
| AOP:497 | ERa inactivation alters mitochondrial functions and insulin signalling in skeletal muscle and leads to insulin resistance and metabolic syndrome | Inherited metabolic disorder; Disease of metabolism | - | | 0.12 | KE:1115 | Increase, Reactive oxygen species |
| 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 | 0.29 | KE:1115 | Increase, Reactive oxygen species |
| KE:1262 | Apoptosis |
| AOP:521 | Essential element imbalance leads to reproductive failure via oxidative stress | Unclassified | - | Murinae gen. sp. | 0.14 | KE:1115 | Increase, Reactive oxygen species |
| AOP:535 | Binding and activation of GPER leading to learning and memory impairments | Developmental disorder of mental health | - | Mouse, Human | 0.11 | KE:1262 | Apoptosis |
| AOP:539 | Decreased Sodium/Potassium ATPase activity leads to Heart failure | Cardiovascular system disease | - | Fish | 0.29 | KE:2237 | Decreased, Plasma sodium concentrations |
| KE:2261 | Decreased, blood plasma volume |
| AOP:549 | Aromatase inhibition leads to reproductive toxicity (including growth and developmental toxicity) in adult female zebrafish | Unclassified | - | | 0.12 | KE:219 | Reduction, Plasma 17beta-estradiol concentrations |
| AOP:552 | Inhibiton of L-Type Calcium Channels leading to heart failure via QT interval prolongation and Torsades de Pointes (TdP) | Cardiovascular system disease | - | Human, Rat, Mouse | 0.17 | KE:698 | Altered, Action Potential |
| AOP:553 | Inhibition of Voltage-gated sodium channels (Na⁺ channels) leading to heart failure | Cardiovascular system disease | - | Human, Rodents, Dogs, Pigs, Insects, Fish | 0.25 | KE:698 | Altered, Action Potential |
| AOP:563 | Aryl hydrocarbon Receptor (AHR) activation causes Premature Ovarian Insufficiency via Bax mediated apoptosis | Reproductive system disease; Endocrine system disease | - | Rat, Mouse, Zebra fish, Human | 0.17 | KE:1262 | Apoptosis |
| 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:1115 | Increase, Reactive oxygen species |