RDEA3170 and Febuxostat Combination Study in Gout Subjects

Inclusion criteria

• Able to understand the study procedures and the risks involved and is willing to provide written informed consent before the first study-related activity.
• Meets one or more criteria for the diagnosis of gout as per the American Rheumatism Association Criteria for the Classification of Acute Arthritis of Primary Gout.
• Body weight ≥ 50 kg (110 lbs) and a body mass index ≥ 18 and ≤ 45 kg/m2.
• Screening serum urate level ≥ 8 mg/dL.
• Free of any clinically significant disease or medical condition, per the Investigator's judgment.

Exclusion criteria

• Unable to take colchicine for gout flare prophylaxis.
• History or suspicion of kidney stones.
• Any gastrointestinal disorder that affects motility and/or absorption.
• Unstable angina, New York Heart Association class III or IV heart failure, ischemic heart disease, stroke, or deep venous thrombosis within 12 months prior to Day 1; or subject is currently receiving anticoagulants.
• Screening laboratory parameters that are outside the normal limits and are considered clinically significant by the Investigator.
• Estimated creatinine clearance < 60 mL/min calculated by the Cockcroft-Gault formula using ideal body weight during the Screening period.
• Taking losartan, fenofibrate, guaifenesin, or sodium-glucose linked transporter-2 inhibitors; chronic and stable doses are permitted if doses are stable for at least 14 days prior to study medication dosing.
• Unable or unwilling to comply with the study requirements or has a situation or condition that, in the opinion of the Investigator, may interfere with participation in the study.