Management of Asymptomatic Hyperuricemia

Introduction to Asymptomatic Hyperuricemia

• The American College of Rheumatology conditionally recommends against initiating any pharmacologic urate-lowering therapy in patients with asymptomatic hyperuricemia (serum urate >6.8 mg/dL with no prior gout flares or subcutaneous tophi) 2, 3
• The KDIGO/KDOQI guidelines suggest not using agents to lower serum uric acid in people with CKD and asymptomatic hyperuricemia to delay CKD progression 1

Indications for Urate-Lowering Therapy

• The American College of Rheumatology recommends urate-lowering therapy for patients with subcutaneous tophi (even one) 2, 3
• Radiographic damage attributable to gout on any imaging modality is a strong indication for urate-lowering therapy 2, 3
• Frequent gout flares (≥2 per year) are a strong indication for urate-lowering therapy 2, 3
• The American College of Rheumatology conditionally recommends urate-lowering therapy for patients with first gout flare and uric acid >9 mg/dL 2, 3
• The KDIGO/KDOQI guidelines conditionally recommend urate-lowering therapy for patients with first gout flare and CKD stage ≥3 1, 2, 3

Important Clinical Considerations

• Uric acid levels can be misleadingly normal or low during acute gout attacks, as uric acid behaves as a negative acute phase reactant during inflammation 2, 3
• If a patient has actually had gout symptoms in the past, the treatment approach changes entirely—they would no longer be "asymptomatic" 2, 3
• The number needed to treat is prohibitively high: 24 patients would need treatment for 3 years to prevent a single incident gout flare, with only 20% of patients with uric acid >9 mg/dL developing gout within 5 years 3
• The voting panel concluded that for the majority of patients with asymptomatic hyperuricemia, the benefits of urate-lowering therapy would not outweigh potential treatment costs or risks 3

Non-Pharmacologic Management

• The KDIGO/KDOQI guidelines recommend counseling on dietary modifications: limit alcohol, organ meats, shellfish, and high-fructose corn syrup 1
• Reviewing medications that may increase uric acid (thiazide and loop diuretics) is recommended 1
• Monitoring for development of gout symptoms, which would change the treatment paradigm, is essential 2, 3