Safety and Efficacy of Genakumab for Injection in Patients With Gout Flare

1. Male or female, 18 years ≤ age ≤ 75 years; 2. BMI ≤ 40kg/m2 3. Meeting ACR 2015 preliminary criteria for the classification of acute arthritis of primary gout; 4. Start of acute gout flare within 3 days prior to enrolled; 5. History of ≥2 gout flare within 12 months prior to study start; 6. Baseline pain intensity ≥ 50mm on the 0-100mm visual analog scale(VAS)