Safety and Efficacy of ABP-745 in Participants With an Acute Gout Flare

Key Inclusion Criteria: Subjects are eligible for the study if they meet all of the following Inclusion Criteria: * Age 18-70 years old (inclusive), male or female. * Body mass index (BMI)18-40 kg/m2 (inclusive). * Medical history and current findings consistent with diagnosis of gouty arthritis. * Subjects must have experienced 2 or more gout flares within 12 months prior to screening. * Onset of an acute gout flare, within 6 months * Patients receiving ULT agents (such as allopurinol, febuxostat, probenecid, etc.) must be on stable doses of these drugs prior to first dose of study drug (and remain on the same dose throughout the Treatment Period). * Subjects agree to maintain a stable lifestyle (such as diet and exercise) during the study period. Key Exclusion Criteria: Subjects are excluded from the study if one or more of the following criteria are met: * Administration of oral prednisone ≥ 10 mg or equivalent doses of other glucocorticoids, or use of narcotics, within 24 hours prior to first dose of study drug, or intramuscular, intravenous, or intra-articular injection of any glucocorticoid within 14 days prior to first dose of study drug. * Use of Nonsteroidal Anti-inflammatory Drugs (NSAIDs) prior to first dose dose of study drug, at the investigator's discretion. * Administration of colchicine or ABP-745 within 14 days prior to first dose of study drug. * Subjects took any investigational drug in any clinical study within 1 month prior to first dose of study dru…