Recruiting
Phase 2

Dotinurad

Sponsor:

Crystalys Therapeutics

Code:

NCT07535034

Conditions

Gout

Eligibility Criteria

Sex: All

Age: 18 - 70+

Healthy Volunteers: Not accepted

Interventions

Dotinurad

Placebo

Study Details

Brief summary:

The primary objective of this trial is to evaluate the efficacy of dotinurad in lowering serum uric acid (sUA) at Week 24 in participants with gout who are XOI intolerant or have failed uricase treatment.

Conditions

Gout

Study ID

NCT07535034

Start date

May 8, 2026

Status verified date

Aug, 2026

Completion date

Aug, 2027

Anticipated

Primary completion date

Jul, 2027

Anticipated

Eligibility Criteria

Eligibility Criteria

Sex: All

Age: 18 - 70+

Healthy Volunteers: Not accepted

Inclusion Criteria:

1. Between 18 and 75 years of age (inclusive) at the time of signing informed consent.
2. Diagnosis of gout based on 2015 American College of Rheumatology (ACR)-European Union League Against Rheumatism (EULAR) criteria for at least 1 year and has at least 1 of the following:

  • History (either by medical record or participant interview) of intolerance or a contraindication to either allopurinol or febuxostat.
  • Failed uricase treatment (eg, an sUA level >6.0 mg/dL at least 2 weeks after last infusion; intolerant or contraindicated to uricase treatment).
3. sUA level >6.0 and <10.5 mg/dL at both Screening Visit 1 (Day -28 Visit) and Screening Visit 2 (Day -7 Visit).
4. Female participants of childbearing potential must have a negative serum pregnancy test at Screening Visit 1 (Day -28 Visit), a negative urine pregnancy test on Day 1, and must not be breastfeeding.
5. Fertile male participants and female participants of childbearing potential must be willing to completely abstain from heterosexual sex or agree to use acceptable contraception from the time of signing informed consent through 30 days after the last dose of trial drug.

Exclusion Criteria:

1. History of or presence of kidney stones within 1 year prior to Screening.
2. History of or presence of malignancy in the last 5 years other than treated cutaneous basal or squamous cell carcinoma.
3. Known or suspected history of drug abuse, a positive drug test at Screening Visit 1, or a recent history of alcohol abuse.
4. Known history of or positive results for human immunodeficiency virus (HIV), Hepatitis B surface antigen (HBsAg), or Hepatitis C virus (HCV) during Screening.
5. Current or historical evidence of any clinically significant disease or condition that, in the opinion of the Investigator, may compromise participant safety or trial compliance or may confound interpretation of trial results.

Study Design

Enrollment

90 participants

Anticipated

Allocation

Randomized

Intervention Model

Parallel Assignment

Primary purpose

Treatment

Interventions and Outcome Measures

Arms

experimental: Dotinurad

The Treatment Period will consist of 2 consecutive parts: a 24-week period where participants will take dotinurad (Treatment Period 1) followed by a 12-week period where participants will continue to take dotinurad (Treatment Period 2).

experimental: Placebo + Placebo to Dotinuard

The Treatment Period will consist of 2 consecutive parts: a 24-week period where participants will take placebo (Treatment Period 1) followed by a 12-week treatment period where participants will take dotinurad (Treatment Period 2).

Interventions

Dotinurad

Over-encapsulated tablets containing active drug substance administered orally.

Placebo

Capsules containing microcrystalline cellulose administered orally.

Primary outcome measure

  • Percentage of Participants With an sUA Level <6.0 mg/dL at Week 24 [ Time Frame: Week 24 ]

Central Contacts and Locations

Central contacts

Locations

The Kirklin Clinic of UAB Hospital

Recruiting

Birmingham, Alabama, United States, 35233

Amicis Research Center

Recruiting

Granada Hills, California, United States, 91344

Cohen Medical Center

Recruiting

Thousand Oaks, California, United States, 91360

Solace Clinical Research

Recruiting

Tustin, California, United States, 92780

Denver Arthritis Clinic - Lowry

Recruiting

Denver, Colorado, United States, 80230

Omega Research Group

Recruiting

DeBary, Florida, United States, 32713

Herco Medical and Research Center, Inc

Recruiting

Flagami, Florida, United States, 33126

New Generation of Medical Research

Recruiting

Hialeah, Florida, United States, 33016

Health Awareness, Inc.

Recruiting

Jupiter, Florida, United States, 33458

Clinical Research of Central Florida

Recruiting

Lakeland, Florida, United States, 33805

D&H Pompano Research Center, LLC

Recruiting

Margate, Florida, United States, 33063

Panax Clinical Research

Recruiting

Miami, Florida, United States, 33014

Anchor Medical Research

Recruiting

Miami, Florida, United States, 33176

Southwest Atlanta Internal Medicine

Recruiting

Atlanta, Georgia, United States, 30331

Great Lakes Clinical Trials

Recruiting

Chicago, Illinois, United States, 60640

Research Group of Lexington, LLC

Recruiting

Lexington, Kentucky, United States, 40503

MD Medical Research

Recruiting

Oxon Hill, Maryland, United States, 20745

Clinical Research Institute of Michigan

Recruiting

Saint Clair Shores, Michigan, United States, 48081

Revival Research Institute

Recruiting

Sterling Heights, Michigan, United States, 48313

Oakland Medical Research Center

Recruiting

Troy, Michigan, United States, 48085

Velocity Clinical Research

Recruiting

Norfolk, Nebraska, United States, 68701

Las Vegas Clinical Trials

Recruiting

Las Vegas, Nevada, United States, 89030

Premier Health Research

Recruiting

Sparta, New Jersey, United States, 07871

Ellipsis Research Group

Recruiting

Brooklyn, New York, United States, 11215

Drug Trials America

Recruiting

Hartsdale, New York, United States, 10530

DJL Clinical Research

Recruiting

Charlotte, North Carolina, United States, 28211

Shelby Clinical Research

Recruiting

Shelby, North Carolina, United States, 28150

Hometown Urgent Care and Research

Recruiting

Dayton, Ohio, United States, 45424

Amarillo Premier Research

Recruiting

Amarillo, Texas, United States, 79124

Zenos Clinical Research

Recruiting

Dallas, Texas, United States, 75230

Epic Medical Research

Recruiting

DeSoto, Texas, United States, 75115

Pioneer Research Solutions

Recruiting

Houston, Texas, United States, 77479

R&H Clinical Research - Westborough Drive

Recruiting

Katy, Texas, United States, 77449

Southwest Rheumatology Research

Recruiting

Mesquite, Texas, United States, 75150

Discovery Clinical Trials, LLC

Recruiting

San Antonio, Texas, United States, 78229

DM Clinical Research

Recruiting

Tomball, Texas, United States, 77375

Velocity Clinical Research (Impact Research Institute)

Recruiting

Waco, Texas, United States, 76710

Digestive Health Research of North Texas

Recruiting

Wichita Falls, Texas, United States, 76301

More Information

Sponsor

Crystalys Therapeutics

Last update posted

Sep 3, 2026

Last verified

Aug, 2026

Keywords

  • Dotinurad
  • Xanthine Oxidase Inhibitors

Trial information was received from ClinicalTrials.gov and was last updated on 2026-09-08. This information was provided to ClinicalTrials.gov by Crystalys Therapeutics on 2026-09-03.