Pentoxifylline
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Also known as BL 191BL-191C04AD03Neotren mrNSC-637086NSC-758481OxpentifyllineOxypentifyllinePentoxifilinaPentoxilPentoxiphyllinTrentalTrental 100Trental 400SID11111613SID11111614SID26719692SID50105176SID85231180
Summary
Pentoxifylline (CHEMBL628) is an approved small molecule (ATC C04AD03) targeting ADORA2B; indicated across 62 conditions including cardiovascular disorder and chronic kidney disease.
At a glance
- Status: Approved (max clinical phase 4)
- Modality: Small molecule
- ATC class: C04AD03
- Targets: 1 (ADORA2B)
- Indications: 62 conditions
- Clinical trials: 144
- Chemistry: 278.31 Da · C13H18N4O3
Identifiers
Drug identity and classification
| Field | Value |
|---|---|
| ChEMBL ID | CHEMBL628 |
| Name | Pentoxifylline |
| Type | Small molecule |
| Max phase | 4 |
| FDA approved | yes |
| PubChem CID | 4740 |
| ATC | C04AD03 |
| Molecular formula | C13H18N4O3 |
| Molecular weight | 278.31 |
| InChIKey | BYPFEZZEUUWMEJ-UHFFFAOYSA-N |
SMILES: CC(=O)CCCCN1C(=O)C2=C(N=CN2C)N(C1=O)C
IUPAC name: 3,7-dimethyl-1-(5-oxohexyl)purine-2,6-dione
Also known as: BL 191, BL-191, C04AD03, Neotren mr, NSC-637086, NSC-758481, Oxpentifylline, Oxypentifylline, Pentoxifilina, Pentoxifylline, Pentoxil, Pentoxiphyllin
Patent coverage: 7,058 distinct patent families (26,061 SureChEMBL compound mentions), from 1 matched compound structure(s). 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 |
|---|---|---|---|---|---|
| ADORA2B | A2B receptor | Antagonist | 5.29 | 0.5% | P29275 |
Broader ChEMBL bioactivity targets: 15 (assay-derived). Sample: Ubiquitin carboxyl-terminal hydrolase 2, Survival motor neuron protein, Prelamin-A/C, Inositol monophosphatase 1, Endonuclease 4, Peripheral myelin protein 22, Relaxin receptor 1, Tumor necrosis factor, Thyrotropin receptor, Phosphodiesterase 4.
Bioactivity
ChEMBL activities: 6 potent at pChembl ≥ 5 of 19 total. Top 30 by potency (10 = 0.1 nM, 6 = 1 µM):
| Target | pChembl | Type | Value | Unit | Activity ID |
|---|---|---|---|---|---|
| P97697 | 7.6 | Potency | 25.1 | nM | CHEMBL_ACT_4832770 |
| P08482 | 7.15 | Potency | 70.8 | nM | CHEMBL_ACT_4807400 |
| ADORA2B | 5.29 | Ki | 5180 | nM | CHEMBL_ACT_849816 |
| LMNA | 5.25 | Potency | 5623 | nM | CHEMBL_ACT_3641040 |
| SMN1 | 5.25 | Potency | 5623 | nM | CHEMBL_ACT_3888699 |
| ACHE | 5.18 | IC50 | 6600 | nM | CHEMBL_ACT_13377216 |
Target pathways
Aggregated over 1 target gene(s): ADORA2B.
Top Reactome pathways
17 total, by targets touching each:
| Pathway | Targets | Genes |
|---|---|---|
| Signal Transduction | 1 | ADORA2B |
| Disease | 1 | ADORA2B |
| Signaling by GPCR | 1 | ADORA2B |
| Class A/1 (Rhodopsin-like receptors) | 1 | ADORA2B |
| GPCR downstream signalling | 1 | ADORA2B |
| Metabolism of proteins | 1 | ADORA2B |
| Adenosine P1 receptors | 1 | ADORA2B |
| Nucleotide-like (purinergic) receptors | 1 | ADORA2B |
| G alpha (s) signalling events | 1 | ADORA2B |
| GPCR ligand binding | 1 | ADORA2B |
| Infectious disease | 1 | ADORA2B |
| Surfactant metabolism | 1 | ADORA2B |
| Leishmania infection | 1 | ADORA2B |
| ADORA2B mediated anti-inflammatory cytokines production | 1 | ADORA2B |
| Anti-inflammatory response favouring Leishmania parasite infection | 1 | ADORA2B |
| Leishmania parasite growth and survival | 1 | ADORA2B |
| Parasitic Infection Pathways | 1 | ADORA2B |
Dominant GO biological processes
| GO term | Targets |
|---|---|
| positive regulation of chronic inflammatory response to non-antigenic stimulus | 1 |
| G protein-coupled receptor signaling pathway | 1 |
| adenylate cyclase-activating G protein-coupled receptor signaling pathway | 1 |
| activation of adenylate cyclase activity | 1 |
| positive regulation of vascular endothelial growth factor production | 1 |
| obsolete positive regulation of cGMP-mediated signaling | 1 |
| obsolete cGMP-mediated signaling | 1 |
| positive regulation of chemokine production | 1 |
| positive regulation of interleukin-6 production | 1 |
| vasodilation | 1 |
| mast cell degranulation | 1 |
| positive regulation of mast cell degranulation | 1 |
| relaxation of vascular associated smooth muscle | 1 |
| presynaptic modulation of chemical synaptic transmission | 1 |
| G protein-coupled adenosine receptor signaling pathway | 1 |
Indications & clinical
Indications
62 indications (1 at ChEMBL trial phase 4). Phase below is the highest clinical-trial phase recorded for this drug against each disease — not the molecule’s overall approval status (that is in the Summary).
| Indication | Trial phase | MONDO | EFO |
|---|---|---|---|
| cardiovascular disorder | 4 | MONDO:0004995 | EFO:0000319 |
| chronic kidney disease | 3 | MONDO:0005300 | EFO:0003884 |
| endometriosis | 3 | MONDO:0005133 | EFO:0001065 |
| necrotizing enterocolitis | 3 | MONDO:0005313 | EFO:0003928 |
| alcoholic hepatitis | 3 | MONDO:0001505 | EFO:1001345 |
| nephrotic syndrome | 3 | MONDO:0005377 | EFO:0004255 |
| brachial plexus neuropathy | 3 | MONDO:0006683 | EFO:1000844 |
| glomerulonephritis | 3 | MONDO:0002462 | MONDO:0002462 |
| osteonecrosis | 3 | MONDO:0005380 | MONDO:0018373 |
| cirrhosis of liver | 3 | MONDO:0005155 | EFO:0001422 |
| liver failure | 3 | MONDO:0100192 | MONDO:0100192 |
| non-small cell lung carcinoma | 2 | MONDO:0005233 | EFO:0003060 |
| cutaneous leishmaniasis | 2 | MONDO:0005446 | EFO:0005046 |
| acute kidney injury | 2 | MONDO:0002492 | HP:0001919 |
| fatty liver disease | 2 | MONDO:0004790 | HP:0001397 |
| pulmonary sarcoidosis | 2 | MONDO:0001708 | DOID:13406 |
| acute lymphoblastic leukemia | 2 | MONDO:0004967 | EFO:0000220 |
| diabetic kidney disease | 2 | MONDO:0005016 | EFO:0000401 |
| injury | 2 | MONDO:0021178 | EFO:0000546 |
| breast neoplasm | 2 | MONDO:0021100 | EFO:0003869 |
| upper aerodigestive tract neoplasm | 2 | MONDO:0005398 | EFO:0004284 |
| leishmaniasis | 2 | MONDO:0011989 | EFO:0005044 |
| brain disorder | 2 | MONDO:0005560 | EFO:0005774 |
| Plasmodium falciparum malaria | 2 | MONDO:0005920 | EFO:0007444 |
| metabolic dysfunction-associated steatohepatitis | 2 | MONDO:0007027 | EFO:1001249 |
| primary biliary cholangitis | 2 | MONDO:0005388 | EFO:1001486 |
| patent ductus arteriosus | 2 | MONDO:0011827 | HP:0001643 |
| Behcet disease | 2 | MONDO:0007191 | EFO:0003780 |
| acute coronary syndrome | 2 | MONDO:0005542 | EFO:0005672 |
| major depressive disorder | 2 | MONDO:0002009 | MONDO:0002009 |
| coronary artery disorder | 2 | MONDO:0005010 | EFO:0001645 |
| depressive disorder | 2 | MONDO:0002050 | MONDO:0002050 |
| biliary atresia | 2 | MONDO:0008867 | MONDO:0008867 |
| epilepsy | 2 | MONDO:0005027 | EFO:0000474 |
| inflammatory bowel disease | 2 | MONDO:0005265 | EFO:0003767 |
| neoplasm | 2 | MONDO:0005070 | MONDO:0004992 |
| sexually transmitted disease | 2 | MONDO:0021681 | MONDO:0021681 |
| liver disorder | 2 | MONDO:0005154 | EFO:0001421 |
| heart disorder | 2 | MONDO:0005267 | EFO:0003777 |
| Parkinson disease | 2 | MONDO:0005180 | MONDO:0005180 |
| long COVID-19 | 2 | MONDO:0100233 | MONDO:0100233 |
| HIV infectious disease | 1 | MONDO:0005109 | EFO:0000764 |
| central nervous system neoplasm | 1 | MONDO:0006130 | EFO:1000158 |
| severe acute respiratory syndrome | 1 | MONDO:0005091 | MONDO:0100096 |
| Duchenne muscular dystrophy | 1 | MONDO:0010679 | MONDO:0010679 |
| alopecia areata | 1 | MONDO:0005340 | EFO:0004192 |
| oral submucous fibrosis | 1 | MONDO:0018166 | EFO:1001818 |
| Hermansky-Pudlak syndrome | 1 | MONDO:0019312 | MONDO:0019312 |
| pancreatitis | 0 | MONDO:0004982 | EFO:0000278 |
| Crohn disease | 0 | MONDO:0005011 | EFO:0000384 |
| infertility disorder | 0 | MONDO:0005047 | EFO:0000545 |
| anemia | 0 | MONDO:0002280 | EFO:0004272 |
| acute pancreatitis | 0 | MONDO:0006515 | EFO:1000652 |
| bipolar disorder | 0 | MONDO:0004985 | MONDO:0004985 |
8 further indication records had no mapped disease name (EFO/MeSH-only) or were duplicates, and are omitted.
Clinical trials
Total trials: 144.
Phase distribution
| Phase | Trials |
|---|---|
| PHASE2 | 41 |
| Not specified | 28 |
| PHASE4 | 22 |
| PHASE3 | 20 |
| PHASE2/PHASE3 | 12 |
| EARLY_PHASE1 | 8 |
| PHASE1/PHASE2 | 7 |
| PHASE1 | 6 |
Top trials by phase / activity
| NCT | Phase | Status | Title |
|---|---|---|---|
| NCT03060434 | PHASE4 | ACTIVE_NOT_RECRUITING | Pentoxifylline and Lumbar Radiculopathy |
| NCT03625648 | PHASE4 | ACTIVE_NOT_RECRUITING | Pentoxifylline in Diabetic Kidney Disease |
| NCT06823362 | PHASE4 | NOT_YET_RECRUITING | Bioequivalence Study of Pentoxifylline 400 Mg in Healthy Subjects Under Fasting and Fed Conditions |
| NCT00155246 | PHASE4 | COMPLETED | Efficacy of Pentoxifylline on Chronic Kidney Disease |
| NCT00770328 | PHASE4 | COMPLETED | The Effects of Pentoxifylline on PAI-1 in an Obese Population |
| NCT01006499 | PHASE4 | UNKNOWN | Role of ‘Pentoxifylline and or IgM Enriched Intravenous Immunoglobulin in the Treatment of Neonatal Sepsis’ |
| NCT01269827 | PHASE4 | COMPLETED | Pentoxifylline and Systemic Inflammation in Hemodialysis Patients |
| NCT01377285 | PHASE4 | UNKNOWN | Renoprotection by Pentoxifylline and Angiotensin Receptor Blocker in Chronic Kidney Disease (CKD) |
| NCT01382303 | PHASE4 | COMPLETED | Effect of Pentoxifylline on Proteinuria in Korean Type 2 Diabetic Patients |
| NCT01542268 | PHASE4 | UNKNOWN | Effect of Pentoxifylline on Tight Junctions (TJs) of Intestinal Mucosa in Patients With Irritable Bowel Syndrome(IBS) |
| NCT02008214 | PHASE4 | UNKNOWN | Efficacy of PTX+IFN Alpha+ RBV on Hepatitis C Virus Coinfected HIV Patients |
| NCT02368457 | PHASE4 | COMPLETED | Management of Mandibular ORN: PENTO as Medical Treatment |
| NCT03006952 | PHASE4 | COMPLETED | Add-on Pentoxifylline to Losartan Versus Increasing Dose of Losartan on NT-PRO BNP in Type 2 Diabetics With Nephropathy |
| NCT03664414 | PHASE4 | UNKNOWN | Pentoxifylline Effect in Patients With Diabetic Nephropathy.(PENFOSIDINE STUDY) |
| NCT03859570 | PHASE4 | WITHDRAWN | Pentoxifylline in Lupus Nephritis |
| NCT04391231 | PHASE4 | WITHDRAWN | HEMolysis in a Percutaneous Axial Flow LVAD, Effects of Pentoxifylline in a Randomized Controlled Trial |
| NCT04910178 | PHASE4 | COMPLETED | Follow-up of NAFLD Patients With MRI-PDFF |
| NCT04977661 | PHASE4 | COMPLETED | Comparing the Effects of Vitamin E, Ursodeoxycholic Acid and Pentoxyfylline on Egyptian Non-alcoholic Steatohepatitis (NASH) Patients |
| NCT05490953 | PHASE4 | UNKNOWN | Enhancing Effect on Tumour Apoptosis With the Use of Pentoxifylline in Patients With Hodgkin Lymphoma |
| NCT05583266 | PHASE4 | UNKNOWN | Efficacy of Pentoxifylline on Cerebrovascular Function in Patients With Cerebral Small Vessel Disease(PERFORM) |
| NCT06115174 | PHASE4 | UNKNOWN | Clinical Study Evaluating the Anticancer Effect of Pentoxiphylline in Patients With Metastatic Colorectal Cancer |
| NCT06265389 | PHASE4 | COMPLETED | Pentoxifylline as an Adjuvant Therapy in the Treatment of Pediatric Pneumonia; A New Perspective of an Old Drug |
| NCT03040778 | PHASE3 | ACTIVE_NOT_RECRUITING | Pentoxifylline and Tocopherol (PENTO) in the Treatment of Medication-related Osteonecrosis of the Jaw (MRONJ) |
| NCT05284656 | PHASE3 | ACTIVE_NOT_RECRUITING | Effect of Folic Acid and/or Pentoxifylline on Patients With Chronic Kidney Disease |
| NCT05897034 | PHASE2/PHASE3 | NOT_YET_RECRUITING | Combination Therapy Between Doxycycline, Pentoxifylline, and Nitazoxanide in Sexually Active Men |
| NCT06040489 | PHASE2/PHASE3 | RECRUITING | Pilot Study: Oral Treatment of American Tegumentary Leishmaniasis (Cutaneous and Mucosal Forms) in the Elderly |
| NCT06421870 | PHASE3 | RECRUITING | Renoprotective Effects of Dapagliflozin Versus Pentoxiphylline in Chronic Kidney Disease Patients |
| NCT07499817 | PHASE3 | RECRUITING | Effect of Pentoxyfilline on Endometrial Thickness and Frozen Embryo Transfer Outcomes |
| NCT00162552 | PHASE3 | COMPLETED | Clinical Trial of Pentoxifylline in Patient With Cirrhosis |
| NCT00267670 | PHASE2/PHASE3 | COMPLETED | Pentoxifylline/Nonalcoholic Steatohepatitis (NASH) Study: The Effect of Pentoxifylline on NASH |
| NCT00285298 | PHASE3 | COMPLETED | Pentoxifylline and Progression of Chronic Kidney Disease in Moderate-to-high Risk Patients |
| NCT00354198 | PHASE3 | TERMINATED | Efficacy of Pentoxifylline on Rapidly Progressive Glomerulonephritis |
| NCT00354731 | PHASE3 | COMPLETED | Efficacy of Pentoxifylline on Primary Nephrotic Syndrome |
| NCT00632697 | PHASE3 | COMPLETED | Pentoxifylline and Endometriosis |
| NCT00663949 | PHASE2/PHASE3 | COMPLETED | Assessment of the Effect of Captopril Versus Combination of Captopril and Pentoxifylline on Reducing Proteinuria in Type 2 Diabetic Nephropathy |
| NCT01214226 | PHASE3 | COMPLETED | Double-blind Randomized Controlled Trial in Severe Alcoholic Hepatitis |
| NCT01263925 | PHASE3 | COMPLETED | Prostaglandin E1 in Outpatients With Intermittent Claudication |
| NCT01291433 | PHASE3 | COMPLETED | Trial of Combined Pentoxifylline-tocopherol-clodronate vs Placebo in Radiation-induced Brachial Plexopathy |
| NCT01381055 | PHASE2/PHASE3 | COMPLETED | Antimony Plus Pentoxifylline in Cutaneous Leishmaniasis |
| NCT01455337 | PHASE3 | UNKNOWN | Short-term Survival in Patients With Severe Alcoholic Hepatitis Treated With Steroid Versus Pentoxifylline |
Clinical evidence (CIViC)
No CIViC predictive evidence (expected for non-precision-medicine drugs).
Pharmacology
Pharmacogenomics
No CPIC/DPWG dosing guideline or drug-level clinical/variant annotations in PharmGKB for this molecule.
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.
23 molecules share ≥1 primary target. Top 23 by shared-target count:
| Molecule | Source | Status | Shared targets |
|---|---|---|---|
| ACEFYLLINE | ChEMBL | Phase 4 (approved) | ADORA2B |
| ADENOSINE | ChEMBL | Phase 4 (approved) | ADORA2B |
| CAFFEINE | ChEMBL | Phase 4 (approved) | ADORA2B |
| ISTRADEFYLLINE | ChEMBL | Phase 4 (approved) | ADORA2B |
| REGADENOSON | ChEMBL | Phase 4 (approved) | ADORA2B |
| THEOPHYLLINE | ChEMBL | Phase 4 (approved) | ADORA2B |
| BINODENOSON | ChEMBL | Phase 3 | ADORA2B |
| ROLOFYLLINE | ChEMBL | Phase 3 | ADORA2B |
| TONAPOFYLLINE | ChEMBL | Phase 3 | ADORA2B |
| TOZADENANT | ChEMBL | Phase 3 | ADORA2B |
| TRABODENOSON | ChEMBL | Phase 3 | ADORA2B |
| CIFORADENANT | ChEMBL | Phase 2 | ADORA2B |
| DENBUFYLLINE | ChEMBL | Phase 2 | ADORA2B |
| DERENOFYLLINE | ChEMBL | Phase 2 | ADORA2B |
| ENPROFYLLINE | ChEMBL | Phase 2 | ADORA2B |
| ETOFYLLINE | ChEMBL | Phase 2 | ADORA2B |
| ETRUMADENANT | ChEMBL | Phase 2 | ADORA2B |
| IMARADENANT | ChEMBL | Phase 2 | ADORA2B |
| MIVEBRESIB | ChEMBL | Phase 2 | ADORA2B |
| PSILOCIN | ChEMBL | Phase 2 | ADORA2B |
| SONEDENOSON | ChEMBL | Phase 2 | ADORA2B |
| TECADENOSON | ChEMBL | Phase 2 | ADORA2B |
| VIPADENANT | ChEMBL | Phase 2 | ADORA2B |
Related Atlas pages
- Genes: ADORA2B
- Diseases: cardiovascular disorder, chronic kidney disease, endometriosis, necrotizing enterocolitis, alcoholic hepatitis, nephrotic syndrome, brachial plexus neuropathy, glomerulonephritis, osteonecrosis, cirrhosis of liver, liver failure
- Drugs: Acefylline, Adenosine, Caffeine, Istradefylline, Regadenoson, Theophylline, Binodenoson, Rolofylline, Tonapofylline, Tozadenant, Trabodenoson