Ardea Biosciences

Closed portfolio with an early-phase archive tilt

According to ClinicalTrials.gov-derived indexes, Ardea Biosciences sits in the top decile of US sponsors by registered trial count (#513 of 15,742 sponsors by registered trial count).

32 total trials none currently recruiting 32 completed early-phase tilt top decile by trial count

Ardea Biosciences: 32 sponsored US clinical trials, none currently recruiting.

Ardea Biosciences sponsors 32 registered US clinical trials on ClinicalTrials.gov, none currently recruiting, and 32 completed. 8 of these trials are in Phase 3-4 (later-stage) and 23 in Phase 1-2 (earlier-stage). The most-studied condition in this pipeline is Gout, with 3 trials.

Top-decile sponsor footprint

Ardea Biosciences ranks in the top decile of sponsors by registered trial count (#513 of 15,742 sponsors by registered trial count). Volume at this scale usually reflects a long institutional pipeline, read phase tilt and therapeutic areas below before treating it as current-year activity.

Trial completion reliability score

A 90/100

32 of 32 decided trials (Completed vs. Terminated on ClinicalTrials.gov) reached their planned completion (100.0%), vs. national p10 68.4% / p90 100% among 1,234 sponsors with at least 10 decided trials. Still-open trials (Recruiting, Active-not-recruiting, Not-yet-recruiting) are excluded since they have not reached an outcome yet.

Indexed trials (enrollment closed)

32 total, page 1 of 1

COMPLETED Phase 1

Lesinurad/Allopurinol 200/300 FDC Tablets Bioequivalence

NCT02888054

COMPLETED Phase 1

RDEA3170 PK/PD Study

NCT02608710

COMPLETED Phase 1

Lesinurad/Allopurinol 200/300 FDC Tablets Bioavailability

NCT02581553

COMPLETED Phase 2

Phase 2a RDEA3170 and Allopurinol Combination Study in Gout Subjects

NCT02498652

COMPLETED Phase 1

RDEA3170 Tablet and Capsule Bioavailability Study

NCT02448368

COMPLETED

DECT Study in Allopurinol-Treated Gout Patients

NCT02393560

COMPLETED Phase 1

RDEA3170 and Allopurinol Combination Study in Gout Subjects

NCT02279641

COMPLETED Phase 1

RDEA3170 Bioavailability Study

NCT02336594

COMPLETED Phase 2

RDEA3170 and Febuxostat Combination Study in Gout Subjects

NCT02246673

COMPLETED Phase 1

Mild, Moderate and Severe Renal Impairment Study

NCT02219516

COMPLETED Phase 1

Lesinurad Tablet Bioequivalence

NCT02127775

COMPLETED Phase 1

Bioavailability of Lesinurad and Intravenous [14C]Lesinurad

NCT02039700

COMPLETED Phase 1

Antacid Interaction Study

NCT01982201

COMPLETED Phase 1

Lesinurad Tablet Relative Bioavailability

NCT01986556

COMPLETED Phase 1

Metformin and Furosemide Drug-Drug Interaction Study

NCT02028689

COMPLETED Phase 2

RDEA3170 Monotherapy in Subjects With Gout

NCT01927198

COMPLETED Phase 1

RDEA3170 AME Study

NCT01910506

COMPLETED Phase 1

Lesinurad Interaction Study With Ranitidine

NCT01908257

COMPLETED Phase 1

NSAID Drug Interaction Study

NCT01884272

COMPLETED Phase 1

RDEA3170 and Febuxostat Drug Interaction Study

NCT01883167

COMPLETED Phase 1

Single and Multiple Dose Study in Japanese Subjects

NCT01872832

COMPLETED Phase 3

Lesinurad and Febuxostat Combination Extension Study in Gout

NCT01808144

COMPLETED Phase 3

Lesinurad and Allopurinol Combination Extension Study in Gout

NCT01808131

COMPLETED Phase 1

Single and Multiple Dose Study in Japanese

NCT01744379

COMPLETED Phase 3

Open-Label Lesinurad Monotherapy Extension Study in Gout

NCT01650246

COMPLETED Phase 3

Lesinurad Monotherapy in Gout Subjects Intolerant to Xanthine Oxidase Inhibitors

NCT01508702

COMPLETED Phase 3

Combination Treatment Study in Subjects With Tophaceous Gout With Lesinurad and Febuxostat

NCT01510769

COMPLETED Phase 3

Combining Lesinurad With Allopurinol in Inadequate Responders

NCT01510158

COMPLETED Phase 3

Combining Lesinurad With Allopurinol in Inadequate Responders

NCT01493531

COMPLETED Phase 4

Allopurinol Outcome Study

NCT01391325

COMPLETED Phase 2

Allopurinol Combination Study

NCT01001338

COMPLETED Phase 2

Gout Dose Response Study

NCT00955981

Phase Distribution

PhaseTrial count
Phase 1 18
Phase 2 5
Phase 3 7
Phase 4 1

Therapeutic Areas

How the Ardea Biosciences early-phase archive is shaped

32 indexed studies, none listed as recruiting (0% open); 32 completed (100%).

Phase mix: 8 late (III/IV) vs 23 early (I/II) (early-phase heavy).

Top condition: Gout (3 trials), 1 other listed.

How to read a closed sponsor archive

When recruiting_count is zero, the indexed set is completed or otherwise not open. Phase tilt still describes where archived studies sat on the investigational pathway. Re-check ClinicalTrials.gov before acting.

Ardea Biosciences: archived-pipeline peers nationwide

Peers matched on 32 indexed studies with no current recruiting: volume and archive shape, not condition overlap.

Ardea Biosciences sits at or above the median trial volume and at or above the median recruiting share among these 9 nationwide peers -- the two do not always move together. Source: ClinicalTrials.gov (2026-08-08 snapshot). 2×2 strategic matrix plotting 9 entities by Total trials (X) and Recruiting share (Y), with a crosshair dividing the plot into four quadrants. Higher volume & more openFocused & more openHigher volume, mostly closedSmaller & mostly closed 010203040 0%5%10%15%20% Total trials Recruiting share Ardea BiosciencesAerie PharmaceuticalsAllina Health SystemHebrew SeniorLifeMiMedx Group10xBio22nd Century Group23andMe3-C Institute for Social Development
Ardea Biosciences sits at or above the median trial volume and at or above the median recruiting share among these 9 nationwide peers -- the two do not always move together. Source: ClinicalTrials.gov (2026-08-08 snapshot).

Ardea Biosciences sits at or above the median trial volume and at or above the median recruiting share among these 9 nationwide peers -- the two do not always move together.

Sponsors near 32 archived trials

Sponsors with similar archive density (± trial count)

What to do with this Ardea Biosciences page

32 registered trials is a research-attention snapshot, not an endorsement of Ardea Biosciences or any single study.

  • None of Ardea Biosciences's trials are currently recruiting in this registry; that can change as new trials post, or check the broader research index. Browse research indexes
  • Gout is the condition Ardea Biosciences studies most, compare against other sponsors active in the same condition before evaluating a specific study. See Gout trials
  • Bring the specific trial ID (NCT number) to your own doctor before enrolling, this page is a directory, not medical guidance. Read the trial-finding guide

Trial and recruiting counts reflect ClinicalTrials.gov registry status as of the data vintage above; individual trial eligibility and enrollment status can change.

Every figure on PlainTrial is rendered directly from the ClinicalTrials.gov registry, no number is typed in by an editor. Ardea Biosciences pipeline card: 32 registered trials from official public datasets. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.