The ACR Releases a New Gout Guideline

In May, the ACR released a new treatment guideline for the management of gout for simultaneous publication in Arthritis & Rheumatology and Arthritis Care & Research.¹ Based on evidence from more than 130 published studies, the guideline makes a total of 42 recommendations—of which 16 are strong: It has 27 recommendations for urate-lowering therapy (ULT) manage­ment (of which 13 are strong), five each for managing gout flares and lifestyle recommendations, four for management of other medications for gout patients and one for asymptomatic hyperuricemia management. The previous ACR gout guidelines were published in 2012.

The guideline was developed using GRADE (Grading of Recommendations Assessment, Development and Evaluation) methodology and included input from an eight-patient panel and consideration of therapies’ cost based on average wholesale pricing for each drug, according to John D. FitzGerald, MD, PhD, co-principal investigator of the new guideline, past chair of the ACR’s Quality of Care Committee and a rheumatology researcher at the University of California, Los Angeles (UCLA), David Geffen School of Medicine. To assess risk of bias of evidence, guideline investigators used the Cochrane risk-of-bias tool for randomized controlled trials and the ROBINS-I (Risk of Bias in Non-Randomized Studies of Interventions) tool for observational studies.

New Strong Recommendations

Sixteen strong recommendations included changes from the 2012 guidelines. New clinical data reinforce the now strong recommendation for following a treat-to-target strategy of dose management when treating all gout patients with serum urate-lowering therapy (ULT). To limit potential side effects (including gout flare with ULT initiation), initiating low-dose ULT is recommended, with subsequent dose titration guided by serial serum urate values to achieve a serum urate target of 6 mg/dL.

Other strong recommendations include:

• Initiating ULT in gout patients with one or more subcutaneous tophi over no ULT;
• Initiating ULT in patients with radiographic damage, using any modality, that is attributable to gout;
• Initiating ULT in patients with frequent gout flares, or two or more per year;
• Use of allopurinol as the first-line ULT, including in gout patients with stage 3 or worse chronic kidney disease;
• When using allopurinol or febuxostat as ULT, starting at low dose, with subsequent dose titration to target over a higher dose (e.g., 100 mg/day or less for patients taking allopurinol or a lower dose for patients with chronic kidney disease, and 40 mg/day or less for patients taking febuxostat);
• Use of concomitant anti-inflammatory prophylaxis over no prophylaxis when patients start ULT for at least three to six months, rather than less than three months, with evaluation and continued prophylaxis if the patient keeps having flares;
• Use of colchicine, non-steroidal anti-inflammatory drugs or glucocorticoids as appropriate first-line therapy for gout flares over interleukin (IL) 1 inhibitors or adrenocorticotropic hormone;
• When colchicine is the chosen agent for managing a gout flare, use of low-dose over high-dose colchicine given its similar efficacy and fewer adverse effects; and
• For patients with gout who have failed to achieve serum urate targets with xanthine oxidase inhibitors (XOIs), uricosurics and other interventions, and who have frequent gout flares or non-resolving tophi, switching to pegloticase over continuing the current ULT.

HLA-B*5801 Testing & More

Conditional recommendations that are new compared with the 2012 guidelines include testing for HLA-B*5801 in African Americans and patients of Southeast Asian descent before starting allopurinol, due to the higher prevalence of this gene in these populations, but not testing for HLA-B*5801 in all other gout patients.

A new conditional recommendation is for an augmented ULT protocol, including patient education and shared decision making, to be managed by a non-physician healthcare provider to optimize the patient’s treat-to-target strategy.

Lifestyle management advice for all gout patients, regardless of disease activity, includes a conditional recommendation for limiting alcohol, purine and high-fructose corn syrup intake, and a conditional recommendation against adding vitamin C supplementation to therapy.

For patients with gout taking their first XOI monotherapy at the maximum tolerated or U.S. Food & Drug Administration-indicated dose who are not at their serum urate target and/or have continued frequent gout flares or non-resolving subcutaneous tophi, the authors conditionally recommend switching the first XOI to an alternate XOI agent over adding a uricosuric agent.

For patients who have failed XOIs, urico­surics and other interventions, and who have frequent gout flares or non-resolving subcutaneous tophi, a strong recommendation is made to switch to pegloticase. In the absence of frequent attacks and no tophi, then the strong recommendation is against switching to pegloticase.