TheraRadar
Data updated: May 26, 2026

DUZALLO (allopurinol)

Metabolic Approved 2017-08-18
1
Indication
--
Phase 3 Trials
8
Years on Market

Details

Status
Discontinued
First Approved
2017-08-18
Patent Cliff
2032

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Routes
ORAL
Dosage Forms
TABLET

Companies

Active Ingredient: ALLOPURINOL , LESINURAD

DUZALLO Approval History

2018
2019
2020
2021
2022
2023
2024
2025
2026
Original
New Indication
New Form
Label Update
2 FDA actions from 2017 to 2017
Aug 2017 ORIGINAL
New Combo · Type 4 - New Combination

What DUZALLO Treats

1 FDA approvals

Originally approved for its first indication in 2017 .

  • Other (1)
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Clinical Trial Registry

79 trials
Trial Sponsor ID Phase Status Title
NCT07089875 FYU-981-CRYS-301 2024-520206-19-00 Ph 3 recruiting A Study of Dotinurad Versus Allopurinol in Participants With Gout
NCT07089888 FYU-981-CRYS-302 2024-520207-84-00 Ph 3 recruiting A Study of Dotinurad Versus Allopurinol in Tophaceous Gout
NCT03150693 A041501 NCI-2016-01981, U10CA180821 Ph 3 recruiting Inotuzumab Ozogamicin and Frontline Chemotherapy in Treating Young Adults With Newly Diagnosed B Acute Lymphoblastic Leukemia
NCT05536349 2021-0578 NCI-2022-07625 Ph 2 recruiting Time-limited Triplet Combination of Pirtobrutinib, Venetoclax, and Obinutuzumab for Patients With Treatment-naïve Chronic Lymphocytic Leukemia (CLL) or Richter Transformation (RT)
NCT03776656 ADSL P160902J 2017-002155-28 Ph 2 completed Evaluation of a Treatment With Allopurinol in Adenylosuccinate Lyase Deficiency
NCT05888233 RESIST F4655-P I21RX004655-01 Ph 2 recruiting Allopurinol Improves Heart Function in African Americans With Resistant Hypertension
NCT05818085 ABP-671-301 Ph 2, Ph 3 completed Phase 2b/3 Study to Assess ABP-671 a Novel URAT1 Inhibitor in Participants With Gout
NCT04875702 TRUST 2021P000517 1U01AR080985-01A1 Ph 4 recruiting Treat-to-Target Serum Urate Versus Treat-to-Avoid Symptoms in Gout
NCT05586971 EURELIA2 LG-GDCL010 Ph 3 completed Tigulixostat, Phase 3 Study, Allopurinol Controlled in Gout Patients
NCT06276556 ABP-671-302 Ph 2, Ph 3 terminated Extension Study of ABP-671 in Participants With Gout
NCT02953509 results posted 5F9003 2016-003408-29 Ph 1, Ph 2 terminated Trial of Magrolimab (Hu5F9-G4) in Combination With Rituximab or Rituximab + Chemotherapy in Participants With Relapsed/Refractory B-cell Non-Hodgkin's Lymphoma
NCT05665699 D0120-205 Ph 2 active not recruiting Phase II Study to Evaluate Efficacy and Safety of D-0120 in Combination With Allopurinol in Subjects With Gout
NCT06056570 UR1-DOT-103 Ph 1, Ph 2 completed Open Label PK, PD and DDI of Dotinurad and Allopurinol in Gout Patients with Hyperuricemia
NCT04956432 SHR4640-303 Ph 3 completed A Multicentre, Randomized, Double-blind, Allopurinol Controlled Study to Evaluate the Efficacy and Safety of SHR4640 in Subjects With Gout
NCT05049863 202301066 Ph 1 terminated Chemotherapy in Patients With Relapsed Small Cell Lung Cancer in Combination With Allopurinol and MycoPhenolate (CLAMP Trial)
NCT04217421 CRUCIAL METC UMCU 18-791 2017-004596-31 Ph 3 recruiting Cerebrum and Cardiac Protection With Allopurinol in Neonates With Critical Congenital Heart Disease Requiring Cardiac Surgery With Cardiopulmonary Bypass
NCT02752633 results posted RDCRN Protocol #6412 2013-000975-33, U54DK083908 Ph 4 completed Effect of Allopurinol and Febuxostat on Urinary 2,8-Dihydroxyadenine Excretion
NCT02661035 2015LS152 Ph 2 completed Allo HSCT Using RIC for Hematological Diseases
NCT03648996 results posted 2012106 Ph 2 completed Sex-related Differences in Arterial Stiffness in Type 2 Diabetics: Role of Uric Acid
NCT04327024 AMETHYST results posted D5496C00005 2019-004862-16 Ph 2 completed Study of Verinurad in Heart Failure With Preserved Ejection Fraction
NCT04532918 results posted D5495C00013 Ph 1 completed Pharmacokinetics of Verinurad and Allopurinol in Combination With Cyclosporine and Rifampicin in Healthy Volunteers
NCT03990363 SAPPHIRE results posted D5495C00002 Ph 2 completed A Study of Verinurad and Allopurinol in Patients With Chronic Kidney Disease and Hyperuricaemia
NCT04256629 results posted D5495C00012 Ph 1 completed A Study to Assess the Effect of Verinurad on the Electric Activity of the Heart
NCT02122718 XILO-FIST GN12MT494 TSA BHF 2013/01 Ph 4 completed XILO-FIST, the Effect of Allopurinol on the Brain Heart and Blood Pressure After Stroke
NCT04983160 PI12/01866 Ph 2 completed Crossover Clinical Trial, Randomized, Double Blind, Placebo Controlled Trial
NCT03865407 results posted HM20014698 Ph 2 terminated Uric Acid Reduction as a Novel Treatment for Pediatric Chronic Kidney Disease
NCT02038179 results posted F130408004 P50AR060772 Ph 2, Ph 3 completed Center of Research Translation (CORT) Project 2
NCT02017171 results posted DK101108 UC4DK101108-01 Ph 3 completed A Multicenter Clinical Trial of Allopurinol to Prevent Kidney Function Loss in Type 1 Diabetes
NCT01637623 CVD/OSA results posted 2012-0026 U01HL105365, A561000 Ph 2 completed Study of Cardiovascular Disease and Obstructive Sleep Apnea
NCT02956278 results posted 14-14550 R01DK103729 Ph 4 completed The Effects of BCRP Q141K on Allopurinol Pharmacokinetics and Dynamics
NCT01200485 results posted 2010-0284 NCI-2012-01889 Ph 2 completed Rasburicase in Patients at High Risk for Tumor Lysis Syndrome (TLS) During Cycle-2
NCT00899431 results posted 2007-0871 NCI-2012-01620 Ph 2 terminated Nonmyeloablative Stem Cell Transplantation for Chronic Lymphocytic Leukemia (CLL)
NCT00732251 results posted IRB13414 Ph 4 terminated Allopurinol Maintenance Study for Bipolar Disorder
NCT02078219 results posted D5491C00001 RDEA3170-203 Ph 2 completed Phase II Dose Finding Study of RDEA3170 Versus Placebo in Japanese Patients With Gout or Asymptomatic Hyperuricemia
NCT02237339 ALLAY 2012CV15 2014-002083-33 Ph 4 completed Does Allopurinol Reduce Thickening of the Left Ventricle of the Heart in Patient With Treated Hypertension?
NCT02600780 ZEST DUHS-GTZ-MD-001-13 Ph 4 completed Zurig (Febuxostat) 40mg Efficacy and Safety Trial
NCT03836599 D5495C00006 Ph 1 completed A Study to Assess the Safety and Pharmacokinetics of Verinurad and Allopurinol in Asian and Chinese Subjects
NCT02129764 PUSH-PATH-2 PUSH-PATH 2 Ph 2, Ph 3 completed Prednisone for Heart Failure Patients With Hyperuricemia
NCT03680573 2017-0842 Ph 1 completed The Effect of Antioxidants on Skin Blood Flow-BH4
NCT03680638 2016-0268 Ph 1 completed The Effect of Antioxidants on Skin Blood Flow During Local Heating
NCT02829177 MIKAL 3004 Ph 4 completed Microalbuminuria and Allopurinol in Type 1 Diabetes
NCT00819585 results posted CACZ885H2251 EudraCT : 2008-005876-28 Ph 2 completed A Study of the Efficacy of Canakinumab in Prevention of Acute Flares in Chronic Gout Patients Initiating Allopurinol Therapy (Core Study) and a Long-term Study of the Efficacy and Safety of Canakinumab in Patients With Gout (Extension Study)
NCT01101035 CARES results posted TMX-67_301 U1111-1114-4194 Ph 3 completed Cardiovascular Safety of Febuxostat and Allopurinol in Participants With Gout and Cardiovascular Comorbidities (CARES)
NCT01550107 GEO006 Ph 4 completed Allopurinol in Functional Impairment (ALFIE) Trial: 'Improving Muscle Strength'
NCT01564277 results posted I 197711 NCI-2011-03231, I 197711 Ph 2 terminated Rasburicase and Allopurinol in Treating Patients With Hematologic Malignancies
NCT01464359 results posted MT2011-15 Ph 2 terminated T-Cell Depleted Double UCB for Refractory AML
NCT00652899 results posted 2007LS138 UMN-MT2007-19R, UMN-WCC-53 Ph 2 terminated Allogeneic Natural Killer Cells in Patients With Recurrent Ovarian Cancer, Fallopian Tube, and Primary Peritoneal Cancer
NCT00288158 DK71223 (completed) R21DK071223 Ph 2 completed Primary Prevention of Hypertension in Obese Adolescents
NCT01459796 UPSURGE results posted IL1T-GA-1101 Ph 3 terminated Study of the Safety and Efficacy of Long-Term Rilonacept Treatment for the Prevention of Gout Flares
NCT01320722 MODERATE results posted 2010-P-002049 1R01HL105440 Ph 3 completed Study of Vitamin D and Uric Acid Lowering on Kidney and Blood Vessel Function

Showing 50 of 79 trials

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Key Completed Trials

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Completed studies with published results, ranked by significance

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Trial Timeline

Full development history with FDA approval milestones

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Understanding FDA Approval Types
Count Type What it means
- ORIG Original approval - drug first enters market
- SUPPL - Efficacy New indication (new disease/condition approved)
- SUPPL - Labeling Label text changes (warnings, dosing updates)
- SUPPL - Manufacturing Production changes (new facility)
- SUPPL - Chemistry Formulation changes (new dosage strength)

Green lines in the timeline show ORIG and Efficacy approvals - the clinically meaningful milestones.

DUZALLO FDA Label Details

View full patent landscape →
8 OB patents · 3 families · 156 international docs across 39 countries

DUZALLO Patents & Exclusivity

Latest Patent: Feb 2032

Patents (8 active)

US8546436 Expires Feb 29, 2032
US9956205 Expires Dec 28, 2031
US9216179 Expires Aug 1, 2031
US8357713 Expires Dec 22, 2029
US8084483 Expires Aug 17, 2029
US8546437 Expires Apr 29, 2029
US10183012 Expires Nov 26, 2028
US8283369 Expires Nov 26, 2028
Source: FDA Orange Book

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Patent Timeline

  • Cliff: 2032
  • 32 active patents

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Data Sources

Data sourced from official FDA and NIH databases. Click links to verify on original sources.