Icatibant
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Also known as IcatibantoHOE-140[DArg0Hyp3Thi5D-Tic 7Oic8]bradykinin
Summary
Icatibant (CHEMBL2028850) is an approved protein β-adrenergic antagonist (ATC B06AC02) targeting BDKRB1 and BDKRB2; indicated across 8 conditions including angioedema and hereditary angioedema.
At a glance
- Status: Approved (max clinical phase 4)
- Modality: Protein
- ATC class: B06AC02
- Targets: 2 (BDKRB1, BDKRB2)
- Indications: 8 conditions
- Clinical trials: 20
- Chemistry: 1304.5 Da · C59H89N19O13S
Identifiers
Drug identity and classification
| Field | Value |
|---|---|
| ChEMBL ID | CHEMBL2028850 |
| Name | Icatibant |
| Type | Protein |
| Max phase | 4 |
| FDA approved | yes |
| PubChem CID | 6918173 |
| ChEBI | CHEBI:68556 |
| ATC | B06AC02 |
| Molecular formula | C59H89N19O13S |
| Molecular weight | 1304.5 |
| InChIKey | QURWXBZNHXJZBE-SKXRKSCCSA-N |
SMILES: C1CC[C@H]2[C@@H](C1)C[C@H](N2C(=O)[C@H]3CC4=CC=CC=C4CN3C(=O)[C@H](CO)NC(=O)[C@H](CC5=CC=CS5)NC(=O)CNC(=O)[C@@H]6C[C@H](CN6C(=O)[C@@H]7CCCN7C(=O)[C@H](CCCN=C(N)N)NC(=O)[C@@H](CCCN=C(N)N)N)O)C(=O)N[C@@H](CCCN=C(N)N)C(=O)O
IUPAC name: (2S)-2-[[(2S,3aS,7aS)-1-[(3R)-2-[(2S)-2-[[(2S)-2-[[2-[[(2S,4R)-1-[(2S)-1-[(2S)-2-[[(2R)-2-amino-5-(diaminomethylideneamino)pentanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]pyrrolidine-2-carbonyl]-4-hydroxypyrrolidine-2-carbonyl]amino]acetyl]amino]-3-thiophen-2-ylpropanoyl]amino]-3-hydroxypropanoyl]-3,4-dihydro-1H-isoquinoline-3-carbonyl]-2,3,3a,4,5,6,7,7a-octahydroindole-2-carbonyl]amino]-5-(diaminomethylideneamino)pentanoic acid
ChEBI definition: A ten-membered synthetic oligopeptide consisting of D-Arg, Arg, Pro, Hyp, Gly, Thi, Ser, D-Tic, Oic, and Arg residues joined in sequrence. A bradykinin receptor antagonist used as its acetate salt for the treatment of acute attacks of hereditary angioedema in adult patients.
Pharmacological roles (ChEBI): peptidomimetic, β-adrenergic antagonist, bradykinin receptor antagonist.
Also known as: Icatibant, Icatibanto, HOE-140, [DArg0, Hyp3, Thi5, D-Tic 7, Oic8]bradykinin, ICATIBANT
Parent form; salt/anhydrous children: CHEMBL2028852
Patent coverage: 39 distinct patent families (108 SureChEMBL compound mentions), from 2 matched compound structure(s). One matched structure accounts for 103 (95%) of the total. Mentions count patents naming the compound (not distinct inventions), so promiscuous / reference molecules inflate the mention figure — families are the dedup metric.
Targets
Targets
Primary targets (GtoPdb curated mechanism): the Cancer dependency column is the DepMap CRISPR fitness signal (% of screened cell lines dependent on the target).
| Gene | Target | Action | pAffinity | Cancer dependency | UniProt |
|---|---|---|---|---|---|
| BDKRB1 | B1 receptor | Antagonist | 7 | 0% | P46663 |
| BDKRB2 | B2 receptor | Antagonist | 8.4 | 0.2% | P30411 |
Broader ChEMBL bioactivity targets: 4 (assay-derived). Sample: B2 bradykinin receptor, B2 bradykinin receptor, B2 bradykinin receptor, Mas-related G-protein coupled receptor member X2.
Bioactivity
ChEMBL activities: 20 potent at pChembl ≥ 5 of 21 total. Top 100 by potency (10 = 0.1 nM, 6 = 1 µM):
| Target | pChembl | Type | Value | Unit | Activity ID |
|---|---|---|---|---|---|
| BDKRB2 | 10.6 | Ki | 0.03 | nM | CHEMBL_ACT_1709742 |
| BDKRB2 | 10.22 | Ki | 0.06 | nM | CHEMBL_ACT_675135 |
| BDKRB2 | 10.19 | Ki | 0.06 | nM | CHEMBL_ACT_63692 |
| P25023 | 10.11 | Ki | 0.08 | nM | CHEMBL_ACT_63693 |
| O70526 | 10.05 | IC50 | 0.09 | nM | CHEMBL_ACT_176156 |
| O70526 | 10.05 | IC50 | 0.09 | nM | CHEMBL_ACT_190110 |
| O70526 | 10.05 | IC50 | 0.09 | nM | CHEMBL_ACT_822248 |
| O70526 | 9.96 | Ki | 0.11 | nM | CHEMBL_ACT_416564 |
| BDKRB2 | 9.74 | Ki | 0.18 | nM | CHEMBL_ACT_902557 |
| BDKRB2 | 9.55 | Kd | 0.28 | nM | CHEMBL_ACT_1709744 |
| P25023 | 9.5 | Kd | 0.32 | nM | CHEMBL_ACT_902553 |
| BDKRB2 | 9.31 | IC50 | 0.49 | nM | CHEMBL_ACT_176158 |
| BDKRB2 | 9.31 | IC50 | 0.49 | nM | CHEMBL_ACT_822249 |
| BDKRB2 | 9.1 | Ki | 0.79 | nM | CHEMBL_ACT_25090665 |
| BDKRB2 | 9.04 | Kd | 0.91 | nM | CHEMBL_ACT_271632 |
| BDKRB2 | 8.97 | IC50 | 1.07 | nM | CHEMBL_ACT_25500430 |
| O70526 | 8.97 | IC50 | 1.07 | nM | CHEMBL_ACT_498917 |
| BDKRB2 | 8.48 | IC50 | 3.3 | nM | CHEMBL_ACT_176157 |
| BDKRB2 | 8.48 | IC50 | 3.3 | nM | CHEMBL_ACT_190111 |
| O70526 | 8.27 | IC50 | 5.4 | nM | CHEMBL_ACT_498918 |
Target pathways
Aggregated over 2 target gene(s): BDKRB1, BDKRB2.
Top Reactome pathways
8 total, by targets touching each:
| Pathway | Targets | Genes |
|---|---|---|
| Signal Transduction | 2 | BDKRB1, BDKRB2 |
| Signaling by GPCR | 2 | BDKRB1, BDKRB2 |
| Class A/1 (Rhodopsin-like receptors) | 2 | BDKRB1, BDKRB2 |
| Peptide ligand-binding receptors | 2 | BDKRB1, BDKRB2 |
| GPCR downstream signalling | 2 | BDKRB1, BDKRB2 |
| G alpha (q) signalling events | 2 | BDKRB1, BDKRB2 |
| G alpha (i) signalling events | 2 | BDKRB1, BDKRB2 |
| GPCR ligand binding | 2 | BDKRB1, BDKRB2 |
Dominant GO biological processes
| GO term | Targets |
|---|---|
| inflammatory response | 2 |
| G protein-coupled receptor signaling pathway | 2 |
| positive regulation of cytosolic calcium ion concentration | 2 |
| signal transduction | 2 |
| positive regulation of leukocyte migration | 1 |
| response to mechanical stimulus | 1 |
| cell migration | 1 |
| negative regulation of cell growth | 1 |
| response to lipopolysaccharide | 1 |
| negative regulation of blood pressure | 1 |
| positive regulation of release of sequestered calcium ion into cytosol | 1 |
| smooth muscle contraction | 1 |
| cell surface receptor signaling pathway | 1 |
| cell surface receptor protein tyrosine kinase signaling pathway | 1 |
| blood circulation | 1 |
Indications & clinical
Indications
7 diseases in clinical trials (phase 1–3, investigational — not approved indications). Highest ChEMBL trial phase per disease; a non-cancer approved use is occasionally logged at phase 3 here.
| Disease (in trials) | Phase | MONDO | EFO |
|---|---|---|---|
| angioedema | 3 | MONDO:0010481 | EFO:0005532 |
| hereditary angioedema | 3 | MONDO:0019623 | MONDO:0019623 |
| hypotensive disorder | 3 | MONDO:0005468 | EFO:0005251 |
| heart failure | 2 | MONDO:0005252 | EFO:0003144 |
| arthropathy | 2 | MONDO:0006816 | EFO:1000999 |
| severe acute respiratory syndrome | 2 | MONDO:0005091 | EFO:0000694 |
| inborn mitochondrial metabolism disorder | 2 | MONDO:0004069 | MONDO:0044970 |
1 further indication record had no mapped disease name (EFO/MeSH-only) or were duplicates, and are omitted.
Clinical trials
Total trials: 20.
Phase distribution
| Phase | Trials |
|---|---|
| PHASE3 | 8 |
| PHASE2 | 5 |
| PHASE4 | 3 |
| PHASE1 | 2 |
| PHASE2/PHASE3 | 1 |
| Not specified | 1 |
Top trials by phase / activity
| NCT | Phase | Status | Title |
|---|---|---|---|
| NCT01457430 | PHASE4 | COMPLETED | Efficacy, Safety and Tolerability of Icatibant for the Treatment of HAE |
| NCT01574248 | PHASE4 | TERMINATED | Effect of Bradykinin Receptor Antagonism on ACE Inhibitor-associated Angioedema |
| NCT04113109 | PHASE4 | COMPLETED | Mechanisms Underlying Hypotensive Response to ARB/NEP Inhibition - Aim 2 |
| NCT05834777 | PHASE3 | RECRUITING | Prevention of Intradialytic Hypotension by Inhibiting Bradykinin B2 Receptor |
| NCT00097695 | PHASE3 | COMPLETED | Subcutaneous Treatment With Icatibant for Acute Attacks of Hereditary Angioedema |
| NCT00500656 | PHASE3 | COMPLETED | Subcutaneous Treatment With Icatibant for Acute Attacks of Hereditary Angioedema (HAE) |
| NCT00912093 | PHASE3 | COMPLETED | A Study of Icatibant in Patients With Acute Attacks of Hereditary Angioedema (FAST-3) |
| NCT00997204 | PHASE3 | COMPLETED | EASSI - Evaluation of the Safety of Self-Administration With Icatibant |
| NCT01386658 | PHASE3 | COMPLETED | A Pharmacokinetic, Tolerability and Safety Study of Icatibant in Children and Adolescents With Hereditary Angioedema |
| NCT01919801 | PHASE3 | COMPLETED | Blinded Safety & Efficacy Placebo Controlled Study of Icatibant for Angiotensin Converting Enzyme Inhibitor Induced Angioedema |
| NCT03888755 | PHASE3 | COMPLETED | A Study of Icatibant for Acute Attacks of Hereditary Angioedema in Japanese Participants |
| NCT05407597 | PHASE2/PHASE3 | COMPLETED | Inhibition of Bradykinin in COVID-19 Infection With Icatibant |
| NCT04488081 | PHASE2 | ACTIVE_NOT_RECRUITING | I-SPY COVID-19 TRIAL: An Adaptive Platform Trial for Critically Ill Patients |
| NCT00303056 | PHASE2 | COMPLETED | Efficacy and Safety Study of Intra-articular Multiple Doses of Icatibant in Patients With Painful Knee Osteoarthritis |
| NCT03005184 | PHASE2 | WITHDRAWN | Mechanism(s) Underlying Cardiovascular Effects of ARB/NEP Inhibition - Aim 2 |
| NCT03177798 | PHASE2 | COMPLETED | Mitochondria and Chronic Kidney Disease |
| NCT05010876 | PHASE2 | COMPLETED | Evaluation of the Effects of Bradykinin Antagonists on Pulmonary Manifestations of COVID-19 Infections (AntagoBrad-Cov Study). |
| NCT00517582 | PHASE1 | TERMINATED | Bradykinin Receptor Blocker in ACE Inhibitor-associated Angioedema |
| NCT02045264 | PHASE1 | COMPLETED | Open-label, Single-arm Study to Assess the Pharmacokinetics, Safety, and Tolerability of a Single Subcutaneous Dose of Icatibant in Healthy Japanese Volunteers |
| NCT05509569 | Not specified | COMPLETED | A Survey of Icatibant in Pediatric Participants With Hereditary Angioedema |
Clinical evidence (CIViC)
No CIViC predictive evidence (expected for non-precision-medicine drugs).
Pharmacology
Pharmacogenomics
No PharmGKB pharmacogenomic data curated for this drug.
Related molecules
Related molecules
Molecules sharing ≥1 of this drug’s curated primary targets, merged from two biobtree sources and ranked by shared-target count, then clinical phase: ChEMBL clinical-stage candidates (development phase ≥2) and PubChem drug-class bioactivity (approved / known drugs acting on the target). Deduplicated by drug name; the drug’s own salt forms are excluded. Note: for a drug with few primary targets a shared-target match can reflect off-target / promiscuous binding rather than the same therapeutic mechanism — the phase ordering surfaces bona-fide therapeutics first.
217 molecules share ≥1 primary target. Top 100 by shared-target count:
| Molecule | Source | Status | Shared targets |
|---|---|---|---|
| RIFAMPIN | ChEMBL + PubChem | Phase 4 (approved) | BDKRB1, BDKRB2 |
| Tamoxifen | ChEMBL + PubChem | Phase 4 (approved) | BDKRB1, BDKRB2 |
| Acetylcholine | PubChem | Approved | BDKRB1, BDKRB2 |
| Aclidinium Bromide | PubChem | Approved | BDKRB1, BDKRB2 |
| Acyclovir | PubChem | Approved | BDKRB1, BDKRB2 |
| Alendronic Acid | PubChem | Approved | BDKRB1, BDKRB2 |
| Allopurinol | PubChem | Approved | BDKRB1, BDKRB2 |
| Alogliptin | PubChem | Approved | BDKRB1, BDKRB2 |
| Alprazolam | PubChem | Approved | BDKRB1, BDKRB2 |
| Amiloride | PubChem | Approved | BDKRB1, BDKRB2 |
| Amitriptyline | PubChem | Approved | BDKRB1, BDKRB2 |
| Amlodipine | PubChem | Approved | BDKRB1, BDKRB2 |
| Amoxapine | PubChem | Approved | BDKRB1, BDKRB2 |
| Aspirin | PubChem | Approved | BDKRB1, BDKRB2 |
| Azathioprine | PubChem | Approved | BDKRB1, BDKRB2 |
| Baclofen | PubChem | Approved | BDKRB1, BDKRB2 |
| Beclomethasone | PubChem | Approved | BDKRB1, BDKRB2 |
| Beclomethasone Dipropionate | PubChem | Approved | BDKRB1, BDKRB2 |
| Bicalutamide | PubChem | Approved | BDKRB1, BDKRB2 |
| Bisoprolol | PubChem | Approved | BDKRB1, BDKRB2 |
| Bosentan | PubChem | Approved | BDKRB1, BDKRB2 |
| Bumetanide | PubChem | Approved | BDKRB1, BDKRB2 |
| Caffeine | PubChem | Approved | BDKRB1, BDKRB2 |
| Candesartan | PubChem | Approved | BDKRB1, BDKRB2 |
| Candesartan Cilexetil | PubChem | Approved | BDKRB1, BDKRB2 |
| Carisoprodol | PubChem | Approved | BDKRB1, BDKRB2 |
| Carvedilol | PubChem | Approved | BDKRB1, BDKRB2 |
| Clozapine | PubChem | Approved | BDKRB1, BDKRB2 |
| Desloratadine | PubChem | Approved | BDKRB1, BDKRB2 |
| dexamethasone | PubChem | Approved | BDKRB1, BDKRB2 |
| Dihydroergotamine | PubChem | Approved | BDKRB1, BDKRB2 |
| Ethambutol | PubChem | Approved | BDKRB1, BDKRB2 |
| Fidaxomicin | PubChem | Approved | BDKRB1, BDKRB2 |
| Fludrocortisone | PubChem | Approved | BDKRB1, BDKRB2 |
| Methotrexate | PubChem | Approved | BDKRB1, BDKRB2 |
| Naproxen | PubChem | Approved | BDKRB1, BDKRB2 |
| Olanzapine | PubChem | Approved | BDKRB1, BDKRB2 |
| Olmesartan Medoxomil | PubChem | Approved | BDKRB1, BDKRB2 |
| Phenytoin | PubChem | Approved | BDKRB1, BDKRB2 |
| Pimozide | PubChem | Approved | BDKRB1, BDKRB2 |
| Propoxyphene | PubChem | Approved | BDKRB1, BDKRB2 |
| Pyrazinamide | PubChem | Approved | BDKRB1, BDKRB2 |
| Sildenafil | PubChem | Approved | BDKRB1, BDKRB2 |
| Sonidegib | PubChem | Approved | BDKRB1, BDKRB2 |
| Stavudine | PubChem | Approved | BDKRB1, BDKRB2 |
| Sulindac | PubChem | Approved | BDKRB1, BDKRB2 |
| Tegaserod | PubChem | Approved | BDKRB1, BDKRB2 |
| theophylline | PubChem | Approved | BDKRB1, BDKRB2 |
| Tiotropium Bromide Monohydrate | PubChem | Approved | BDKRB1, BDKRB2 |
| Valacyclovir | PubChem | Approved | BDKRB1, BDKRB2 |
| Verapamil | PubChem | Approved | BDKRB1, BDKRB2 |
| AMIODARONE | ChEMBL + PubChem | Phase 4 (approved) | BDKRB2 |
| AMSACRINE | ChEMBL | Phase 4 (approved) | BDKRB2 |
| INDOCYANINE GREEN ACID FORM | ChEMBL | Phase 4 (approved) | BDKRB2 |
| NILOTINIB | ChEMBL | Phase 4 (approved) | BDKRB1 |
| NIMESULIDE | ChEMBL | Phase 4 (approved) | BDKRB2 |
| NITAZOXANIDE | ChEMBL | Phase 4 (approved) | BDKRB2 |
| PYRVINIUM | ChEMBL | Phase 4 (approved) | BDKRB2 |
| RIFAXIMIN | ChEMBL | Phase 4 (approved) | BDKRB2 |
| SUNITINIB | ChEMBL | Phase 4 (approved) | BDKRB2 |
| DIACEREIN | ChEMBL | Phase 3 | BDKRB2 |
| BENZETHONIUM | ChEMBL + PubChem | Phase 2 (approved) | BDKRB2 |
| ALPRENOLOL | ChEMBL | Phase 2 | BDKRB2 |
| BRADYKININ | ChEMBL | Phase 2 | BDKRB2 |
| FASITIBANT | ChEMBL | Phase 2 | BDKRB2 |
| FASITIBANT CHLORIDE | ChEMBL | Phase 2 | BDKRB2 |
| LABRADIMIL | ChEMBL | Phase 2 | BDKRB2 |
| MK0686 | ChEMBL | Phase 2 | BDKRB1 |
| SAFOTIBANT | ChEMBL | Phase 2 | BDKRB1 |
| Abiraterone | PubChem | Approved | BDKRB2 |
| Acebutolol | PubChem | Approved | BDKRB2 |
| Acetazolamide | PubChem | Approved | BDKRB2 |
| acetylcysteine | PubChem | Approved | BDKRB2 |
| Adenine | PubChem | Approved | BDKRB2 |
| Afatinib | PubChem | Approved | BDKRB2 |
| Albendazole | PubChem | Approved | BDKRB2 |
| albuterol | PubChem | Approved | BDKRB2 |
| Alfuzosin | PubChem | Approved | BDKRB2 |
| Almotriptan | PubChem | Approved | BDKRB2 |
| Alosetron | PubChem | Approved | BDKRB2 |
| Amantadine | PubChem | Approved | BDKRB2 |
| aminolevulinic acid | PubChem | Approved | BDKRB2 |
| Amisulpride | PubChem | Approved | BDKRB2 |
| Amoxicillin | PubChem | Approved | BDKRB1 |
| Amphetamine | PubChem | Approved | BDKRB1 |
| Anagrelide | PubChem | Approved | BDKRB2 |
| Antipyrine | PubChem | Approved | BDKRB2 |
| Apixaban | PubChem | Approved | BDKRB2 |
| Aprepitant | PubChem | Approved | BDKRB2 |
| Atazanavir | PubChem | Approved | BDKRB2 |
| Atenolol | PubChem | Approved | BDKRB2 |
| Azelaic Acid | PubChem | Approved | BDKRB2 |
| Belzutifan | PubChem | Approved | BDKRB2 |
| Benzocaine | PubChem | Approved | BDKRB2 |
| Betamethasone Dipropionate | PubChem | Approved | BDKRB2 |
| Betamethasone Valerate | PubChem | Approved | BDKRB2 |
| Bethanechol | PubChem | Approved | BDKRB2 |
| Biotin | PubChem | Approved | BDKRB2 |
| Brimonidine | PubChem | Approved | BDKRB2 |
| Bromocriptine | PubChem | Approved | BDKRB1 |
Related Atlas pages
- Genes: BDKRB1, BDKRB2
- In clinical trials for: angioedema, hereditary angioedema, hypotensive disorder, heart failure, arthropathy, severe acute respiratory syndrome, inborn mitochondrial metabolism disorder
- Drugs: Rifampin, Tamoxifen, Acetylcholine, Aclidinium Bromide, Acyclovir, Alendronic Acid, Allopurinol, Alogliptin, Alprazolam, Amiloride, Amitriptyline, Amlodipine, Amoxapine, Aspirin, Azathioprine, Baclofen, Beclomethasone, Bicalutamide, Bisoprolol, Bosentan, Bumetanide, Caffeine, Candesartan, Candesartan Cilexetil, Carisoprodol, Carvedilol, Clozapine, Desloratadine, dexamethasone, Dihydroergotamine, Ethambutol, Fidaxomicin, Fludrocortisone, Methotrexate, Naproxen, Olanzapine, Olmesartan Medoxomil, Phenytoin, Pimozide, Propoxyphene, Pyrazinamide, Sildenafil, Sonidegib, Stavudine, Sulindac, Tegaserod, theophylline, Valacyclovir, Verapamil, Amiodarone, Amsacrine, Indocyanine Green Acid Form, Nilotinib, Nimesulide, Nitazoxanide, Pyrvinium, Rifaximin, Sunitinib, Diacerein, Abiraterone, Acebutolol, Acetazolamide, acetylcysteine, Afatinib, Albendazole, albuterol, Alfuzosin, Almotriptan, Alosetron, Amantadine, aminolevulinic acid, Amisulpride, Amoxicillin, Amphetamine, Anagrelide, Antipyrine, Apixaban, Aprepitant, Atazanavir, Atenolol, Azelaic Acid, Belzutifan, Benzocaine, Betamethasone Dipropionate, Betamethasone Valerate, Bethanechol, Biotin, Brimonidine, Bromocriptine