Clinical Updates on the Management of GOUT Evidence-Based Strategies for Improved Patient Outcomes
Learning Objectives • Describe the pathophysiologic underpinnings of gout, with a focus on urate metabolism and excretion • Differentially diagnose gout based on hyperuricemia, joint assessment, podagra, and relevant risk factors • Discuss current and emerging treatment strategies that can reduce hyperuricemia and risks of acute gout attacks • Tailor treatment regimens for patients with gout based on disease severity, renal function, therapeutic response, and comorbid conditions • Engage patients in open dialogue about gout as a chronic disease, treatment expectations and options, and the importance of treatment adherence
Gout Is Common •
Affects ~8.3 million adults (3.9%) in the United States – Most common inflammatory joint disease in men – Disparity between men and women decreases after menopause • Loss of uricosuric effect of estrogen
•
Incidence/prevalence has increased over the last 40 years – Aging population – Higher rates of comorbidities linked to hyperuricemia • eg, obesity – Use of thiazide and loop diuretics – Dietary trends
Doherty M. Rheumatology. 2009;48(suppl 2):ii2–ii8; Lawrence RC, et al. Arthritis Rheum. 2008;58:26-35; Zhu Y, et al. Arthritis Rheum. 2011;63:3136-3141.
Silent tissue urate crystal deposition begins
Urate Burden
Pain Level
Gout 4 Stages of a Chronic Disease
Years Asymptomatic Hyperuricemia
Acute Gout With Intercritical Periods
Advanced Gout
Elevated serum urate with no clinical gout
Acute inflammation and intervals between flares
Long-term gouty complications of uncontrolled hyperuricemia
Perez-Ruiz F, et al. Adv Ther. 2015;32:31-41.
Scientific Insights Into GOUT Pathophysiology Michael H. Pillinger, MD Professor of Medicine Rheumatology Program Director NYU Langone Medical Center NYU Hospital for Joint Diseases Section Chief, Rheumatology Manhattan VA Hospital New York, New York 5
Urate Homeostasis Summary •
Uric acid is a product of purine metabolism
•
Gout develops in the presence of hyperuricemia – Many patients with hyperuricemia do not develop gout
•
Serum urate levels determined by: – Dietary purine intake – Cellular degradation of purines to urate (xanthine oxidase) – Urate excretion from the body via intestines and kidneys (most common etiologic mechanism)
•
Urate saturation (>6.8 mg/dL) can lead to monosodium urate crystals – Induce painful inflammatory responses – Grow into tophi – Precipitate erosive joint damage over time
Gustafsson D, Unwin R. BMC Nephrol. 2013;14:164.
Adam Patient Presentation • 52-year-old Thai-American accountant
• BMI, 27.8 kg/m2 • BP, 124/82 mm Hg
• Presents with intense pain in his right • Nonsmoker ankle • Medical history – Pain is 9/10 and severely limiting – Hypertension diagnosis mobility 4 years ago – 3 similar attacks in last 5 years • Lisinopril/hydrochlorothiazide • Self-limiting and “nothing to 20 mg/12.5 mg daily bother a doctor about” – T2DM diagnosis 1 year ago • Metformin 1000 mg twice daily
What would confirm or rule out a gout diagnosis? BMI = body mass index; BP = blood pressure; T2DM = type 2 diabetes mellitus.
1977 ACR Criteria for Classification of Acute Gout Inadequate for Definitive In-Office Diagnosis 1.
>1 attack of acute arthritis
8.
Tophus (proven or suspected)
2.
Maximum inflammation developed within 1 day
9.
Hyperuricemia •
During acute gout flares, serum urate levels are 6.0 mg/dL in 14% and 8.0 mg/dL in 32% of cases
3.
Monoarthritis attack
4.
Redness observed over joints
5.
First MTP joint painful or swollen
10.
Asymmetric swelling within joint on x-ray
6.
Unilateral first MTP joint attack
11.
7.
Unilateral tarsal joint attack
Subcortical cysts without erosions on x-ray
12.
Joint fluid negative for infection
≥6 of the 12 criteria = probable gout MISDIAGNOSIS in 1 of 5 cases ACR = American College of Rheumatology; MTP = metatarsophalangeal. Malik A, et al. J Clin Rheumatol. 2009;15:22-24; Schlesinger N, et al. J Rheumatol. 2009;36:1287-1289; Underwood M. BMJ. 2006;332:1315-1319; Wallace SL, et al. Arthritis Rheum. 1977;20:895-900.
Common Sites of Acute Flares • Gout can occur in bursae, tendons, and joints • 80% of first attacks are monoarticular
Olecranon bursa Elbow Wrist Fingers
First MTP 50% of initial attacks Eventually affected in ~90% of patients Midfoot Grassi W, De Angelis R. Reumatismo. 2011;63:238-245; Terkeltaub R, Edwards NL. Gout: Diagnosis and Management of Gouty Arthritis and Hyperuricemia. 2nd ed. West Islip, NY: Professional Communications, Inc; 2011; Underwood M. BMJ. 2006;332:1315-1319.
Knee
Ankle Subtalar
Joint Aspiration and Synovial Fluid Analysis Best Measure for Definitive Diagnosis of Gout Gold Standard:
Compensated Polarized Light Microscopy • Urate crystals identified by: – Strong negative birefringence – Needle and rod shapes • Infection and crystals can be seen together • Helps rule out other causes – eg, rheumatoid arthritis, pseudogout ACR. Rheumatology Image Bank. Atlanta, GA; 1998; Phelps P, et al. JAMA. 1968;12;203:508-512.
Joint Aspiration Ideal vs Practical
Ideal Definitive diagnosis of gout achieved by joint aspiration in each patient
Common Practice PCPs and patients reluctant to aspirate inflamed joints Performed in approximately 10% of gout cases
PCPs = primary care providers. Segal JB, et al. Arthritis Care Res. 1999;12:376-380; Swan A, et al. Ann Rheum Dis. 2002;61:493-498; Underwood M. BMJ. 2006;332:1315-1319; Wallace SL, et al. Arthritis Rheum. 1977;20:895-900.
Imaging Urate Crystal Deposits and Tophaceous Gout
Plain X-ray
Ultrasound
CT Scan
MRI
Insensitive in early disease
Sensitive in early disease Can be abnormal in asymptomatic hyperuricemia
Sensitive, but expensive Dual-energy CT scans are specific for tophi
Sensitive, but expensive
CT = computed tomography; MRI = magnetic resonance imaging. Schlesinger N. Am J Manag Care. 2005;11(suppl 15):S443-S450.
Major Alternatives in the Differential Diagnosis • • • •
Septic arthritis Pseudogout Cellulitis Osteoarthritis of first MTP joint or nodal osteoarthritis of small hand joints • Rheumatoid arthritis (vs chronic tophaceous gout) • Psoriatic arthritis, spondyloarthropathy • Lyme disease – Limited flares of painful oligoarthritis, typically involving the knee
Mease PJ. J Rheumatol. 2011;38:557-561.
Adam Diagnosis • Lipids • Pain came in the last 24 h – TC, 184 mg/dL – Redness over affected joint – LDL-C, 105 mg/dL – No tophi evident on exam – HDL-C, 45 mg/dL • No history of urolithiasis – TG, 172 mg/dL • Notable family history • CKD (stage 2) – Father, fatal MI at age 64 – eGFR, 80 mL/min/1.73 m2 – Mother, relatively healthy at age 88 – UACR, 4.2 mg/mmol • FPG, 102 mg/dL • Serum urate, 8.0 mg/dL
Adam receives a diagnosis of gout CKD = chronic kidney disease; eGFR = estimated glomerular filtration rate; FPG = fasting plasma glucose; HDL-C = high-density lipoprotein cholesterol; LDL-C = low-density lipoprotein cholesterol; MI = myocardial infarction; TC = total cholesterol; TG = triglycerides; UACR = urine albumin-creatinine ratio.
2012 ACR Gout Guidelines Pharmacologic Therapy for Acute Flares Assess Severity
Polyarticular or multiple large joints with severe pain
Mild/moderate pain or 1-3 small or 1-2 large joints
Monotherapy NSAIDs Most can be used at maximum approved doses Monitor for toxicities • • •
Combination Therapy • Colchicine + NSAID • Oral corticosteroid + colchicine • Intra-articular steroids with all other modalities
Systemic Corticosteroids Prednisone or prednisolone >0.5 mg/kg/d for 5-10 days
Colchicine 1.2 mg initially and 0.6 mg 1 hour later (fewer side effects than higher doses)
Supplement with topical ice as needed Initiate therapy within 24 h of acute gout flare onset Continue pharmacologic urate-lowering therapy during acute attacks
NSAID = nonsteroidal anti-inflammatory drug. Khanna D, et al. Arthritis Care Res. 2012;64:1447-1461; Terkeltaub RA, et al. Arthritis Rheum. 2010;62:1060-1068.
2012 ACR Gout Guidelines Pharmacologic Therapy for Acute Flares (cont’d) Inadequate responsea Consider alternative diagnosis
Alternative Monotherapy
Treatment Outcome
Combination Add-on Therapy
Treatment Outcome
Successful outcome
Inadequate response
Off-Label Therapies in Development aInadequate
response defined as <20% improvement in pain within 24 h or <50% improvement after 24 h. Khanna D, et al. Arthritis Care Res (Hoboken). 2012;64:1447-1461.
Successful outcome
Patient Education • Diet and lifestyle triggers • Prompt self-treatment of subsequent attacks Urate-Lowering Therapy • Consider indications • Adjust ongoing regimen
ACR 2012 Gout Guidelines After the Initial Acute Attack… • • • •
Counsel on factors that can precipitate attack Implement diet and lifestyle changes to prevent flares Consider secondary causes of hyperuricemia Eliminate nonessential medications that induce hyperuricemia • Evaluate gout disease burden – Palpable tophi – Frequency and severity of acute and chronic symptoms • Assess and encourage adherence with medications – Review dosing schedule, instructions, potential adverse events Khanna D, et al. Arthritis Care Res (Hoboken). 2012;64:1431-1446; Zhang Y, et al. Ann Rheum Dis. 2012;71:1448-1453.
2012 ACR Gout Guidelines General Health, Diet, and Lifestyle Recommendations • Weight loss for obese patients (to BMI that promotes general health) • Healthy overall diet Avoid
• Exercise (to physical fitness) • Smoking cessation • Stay well hydrated Limit
Encourage
• Organ meats high in purine content (eg, sweetbreads, liver, kidney)
Serving sizes of: • Beef, lamb, pork • Seafood with high purines (eg, shellfish)
Low-fat or non-fat dairy products
• High-fructose corn syrup–sweetened sodas, other beverages, or foods
• Serving of naturally sweet fruit juices • Table sugar, sweet beverages, and desserts • Table salt, including in sauces
Vegetables
• Alcohol overuse (>2 drinks/day for men or >1 drink/day for women) • Any alcohol use during periods of frequent attacks or in poorly controlled advanced gout
• Alcohol (particularly beer, but also wine and spirits) in all patients
Khanna D, et al. Arthritis Care Res (Hoboken). 2012;64:1431-1446; Zhang Y, et al. Ann Rheum Dis. 2012;71:1448-1453.
2012 ACR Gout Guidelines Comorbidity Checklist for Primary Care • Obesity and diet, including excessive alcohol intake • Modifiable risk factors for coronary artery disease or stroke – eg, hyperlipidemia, hypertension, metabolic syndrome, T2DM • Serum urate–elevating medications • History of urolithiasis • Chronic kidney glomerular or interstitial disease • Genetic cause of uric acid overproduction – Abnormal purine metabolism • Acquired cause of uric acid overproduction – Psoriasis, myeloproliferative or lymphoproliferative disease • Lead intoxication
Khanna D, et al. Arthritis Care Res (Hoboken). 2012;64:1431-1446.
Adam Treatment of Acute Gout Flare • Acute regimen – Prescribed colchicine 1.2 mg initially and 0.6 mg 1 hour later – Advised to rest joint and apply ice as needed – Pain reduced to a tolerable level within 24 h • Provided with patient education materials on gout, including websites – Urate burden of a chronic disorder – “Curable” disease www.GoutEducation.org • Educated on dietary recommendations • Reminded of ongoing efforts to lose weight and adhere to his weekly exercise regimen
2012 ACR Gout Guidelines Indications for Pharmacologic Urate-Lowering Therapy
Tophus or Tophi Assess via clinical exam or imaging
Frequent Attacks â&#x2030;Ľ2 attacks of acute gouty arthritis/year
Chronic Kidney Disease Stage 2 or worse
History of Urolithiasis
Other patients may also be candidates for urate-lowering therapy Khanna D, et al. Arthritis Care Res (Hoboken). 2012;64:1431-1446.
2012 ACR Gout Guidelines Current Recommendations for Urate-Lowering Therapy
Treat to individualized serum urate targets • The usual serum urate target is <6.0 mg/dL • Serum urate levels <5.0 mg/dL may be needed to improve gout signs and symptoms
Select First-Line Agent
Acute Gout Prophylaxis
Xanthine Oxidase Inhibitor
Initiate concomitant pharmacologic gout attack prophylaxis
Allopurinol
OR
Febuxostat
If ≥1 xanthine oxidase inhibitor is contraindicated or not tolerated
Alternative First-Line Agent
Probenecid
Khanna D, et al. Arthritis Care Res (Hoboken). 2012;64:1431-1446.
2012 ACR Gout Guidelines Initiating Urate-Lowering Therapy • Do not start urate-lowering therapy during an attack unless good prophylaxis is in place – Fluxes in urate levels can precipitate acute flares • Increased surveillance necessary for gout determinantsa • Monitor regularly until serum urate target is achieved – Incidence of flares and serum urate levels decline over time with effective treatment • Timing is important – Adherence to urate-lowering therapy is often poor, especially in the first year aTophi,
recurrent attacks, very high serum urate levels, associated risk factors.
Khanna D, et al. Arthritis Care Res (Hoboken). 2012;64:1431-1446.
2012 ACR Gout Guidelines Allopurinol as First-Line Urate-Lowering Therapy • Effective in uric acid overproducers and underexcretors • Published efficacy/safety data for doses ≥300 mg limited • Maximum FDA-approved dose, 800 mg/d – Reduced in CKD • Start at ≤100 mg/d (50 mg/d with severe CKD) – Gradual dose escalation every 2 to 5 weeks to reduce flare risk – Twice daily dosing for doses >300 mg to avoid GI side effects • Check renal and liver function before and during treatment FDA = US Food and Drug Administration; GI = gastrointestinal. Khanna D, et al. Arthritis Care Res (Hoboken). 2012;64:1431-1446; Terkeltaub R. Nat Rev Rheumatol. 2010;6:30-38.
Allopurinol Limitations as Urate-Lowering Therapy • Intolerance in 5%-10% (eg, liver function, GI, CNS) • Pruritic rash in ~2% • Major allopurinol hypersensitivity syndrome – Incidence 0.1%-0.4% (~25% mortality) – Usually in first months of therapy – More common with CKD, thiazides, HLA-B*5801 • Consider pharmacogenetic HLA-B*5801 PCR testing in high-risk populations (Han Chinese, Thai, Koreans) CNS = central nervous system; PCR = polymerase chain reaction. Chao J, et al. Curr Rheumatol Rep. 2009;11:135-140; Hande KR, et al. Am J Med. 1984;76:47-56; Hung SI, et al. Proc Natl Acad Sci USA. 2005;102:4134-4139.
Allopurinol Dosing Current Usage vs Suggested Needs
Treated Patients, %
70
372 mg/daya
Predicted optimal dosing
60
Current dosing
50 40 30 20 10
100
300
500
Allopurinol Dose, mg/day aMean
dose required to achieve urate targets (<6.0 mg/dL) in small study of 49 patients with gout. Perez-Ruiz F, et al. Ann Rheum Dis. 1998;57:545-549; Sarawate CA, et al. Mayo Clin Proc. 2006;81:925-934.
700
Urate-Lowering Therapy Febuxostat • Selective inhibitor of xanthine oxidase with nonpurine backbone • Dose: 40 mg/d starting dose, labeled use up to 80 mg/d – ACR guidelines allow for doses up to 120 mg (approved in Europe) • Advantages – More selective than allopurinol – Lower renal excretion vs allopurinol active metabolite – No dose adjustment with mild/moderate renal or hepatic impairment • More expensive but well-tolerated alternative to allopurinol Khanna D, et al. Arthritis Care Res (Hoboken). 2012;64:1431-1446; Drugs@FDA. http://www.accessdata.fda.gov/drugsatfda_docs/label/2012/021856s006lbl.pdf. Accessed May 30, 2015.
Febuxostat Phase 3 Trials Patients With Serum Urate Levels <6.0 mg/dL at Final Visit, %
100 90
Febuxostat (40 mg/d)
80
28
Placebo
a 74%
60 50
45%
42%
40
c 39%
36%
30 20 10
n = 127 n = 757 n = 756 n = 756
n = 253 n = 263
0 CONFIRMS (6 mo)
aP
Allopurinol (300 mg/d)
b 72%
a 67%
70
Febuxostat (80 mg/d)
APEX (6 mo)
1%
n = 249 n = 242 FACT (12 mo)
<.001 vs allopurinol; bP <.05 vs placebo and vs allopurinol; cP <.05 vs placebo. APEX = Allopurinol- and Placebo-Controlled, Efficacy Study of Febuxostat; CONFIRMS = Efficacy and Safety of Oral Febuxostat in Participants With Gout; FACT = Febuxostat Versus Allopurinol Control Trial. Becker MA, et al. Arthritis Res Ther. 2010;12:R63; Becker MA, et al. N Engl J Med. 2005;353:2450-2461; Schumacher HR Jr, et al. Arthritis Rheum. 2008;59:1540-1548.
Urate-Lowering Therapy Uricosurics • Increase urate excretion by inhibiting urate reabsorption in the kidney • Probenecid—only FDA-approved uricosuric – Alternative in those intolerant to at least 1 xanthine oxidase inhibitor – Not recommended in persons with history of urolithiasis • Increases urolithiasis risk, especially with acidic urine pH – Not recommended if creatinine clearance <50 mL/min • Losartan, atorvastatin, and fenofibrate are less potent (and off-label) Khanna D, et al. Arthritis Care Res. 2012;64:1431-1446; Terkeltaub R. Arthritis Res Ther. 2009;11:236; Terkeltaub R, et al. Joint Bone Spine. 2009;76:444-446; Terkeltaub RA. N Engl J Med. 2003;349:1647-1655.
Urate-Lowering Therapy for Refractory Disease Pegloticase 14
Mean Plasma Uric Acid, mg/dL
Month 3
Respondersa Nonresponders Placebo
12
Month 6
10 8 6 4 2 0 1
3
5
7
9
11
13
Week
15
17
19
21
23
25
•
Drug antigenicity may cause loss of drug effect and infusion reactions
•
Stop oral urate-lowering therapy to avoid masking antibody-mediated loss of urate-lowering effect by pegloticase
aPositive
response defined as plasma urate levels <6.0 mg/dL for ≥80% of the time during months 3 and 6. N = 85 patients receiving biweekly intravenous pegloticase and 43 patients receiving placebo at baseline. Khanna D, et al. Arthritis Care Res. 2012;64:1431-1446; Reinders MK, et al. Ther Clin Risk Manag. 2010;6:543-550; Sundy JS, et al. JAMA. 2011;306:711-720.
Urate-Lowering Therapy Emerging Options in Development • Lesinurad – Selective uric acid reabsorption inhibitor that inhibits URAT1 and OAT4 transporters in the renal tubule – Phase 3 data presented at 2014 ACR annual meeting • Arhalofenate – Dual-acting anti-inflammatory and urate-lowering therapy – Oral IL-1β inhibitor combined with uricosuric effects
IL = interleukin; OAT = organic anion transporter; URAT = uric acid transporter. Edwards NL, So A. Rheum Dis Clin North Am. 2014;40:375-387; Fleischmann R, et al. Rheumatology (Oxford). 2014;53:2167-2174; Saag KG, et al. Presented at: ACR Annual Meeting; November 2014; Boston, MA. Abstract L10.
Patients Achieving Serum Urate Levels <6.0 mg/dL at Month 6, %
Urate-Lowering Therapy Lesinurad + Allopurinol
80
Placebo + allopurinol Lesinurad 400 mg + allopurinol 54 a
60 40
28
Lesinurad 200 mg + allopurinol 67 a
59 a
55 a
23
20 0 CLEAR 1
CLEAR 2
Safety • • aP
Patients experiencing ≥1.5X increase in serum creatinine: placebo, 2.2%; lesinurad 200 mg, 5.9%; lesinurad 400 mg, 15.5%. Most cases resolved without interrupting study medication
<.0001 vs placebo + allopurinol. N = 603 (CLEAR 1) and 610 (CLEAR 2). CLEAR = Combining Lesinurad With Allopurinol in Inadequate Responders. Saag KG, et al. Presented at: ACR Annual Meeting; November 2014; Boston, MA. Abstract L10.
Patients With â&#x2030;Ľ1 Gout Flare in Each 4-Week Period, %
Initiating Urate-Lowering Therapy Flare Risk Without Prophylactic Coverage 50
Febuxostat, 120 mg Febuxostat, 80 mg
40
Allopurinol, 300 mg
30 20 10 0 1-4
5-8
9-12 13-16 17-20 21-24 25-28 29-32 33-36 37-40 41-44 45-48 49-52
Period, Weeks
â&#x20AC;˘
Patients prescribed a prophylactic regimen from baseline to week 8
N = 762 patients with gout. Becker MA, et al. N Engl J Med. 2005;353:2450-2461.
2012 ACR Gout Guidelines Gout Flare Prophylaxis Initiate with or just before initiating pharmacologic urate-lowering therapy • First-line: • Second-line:
Low-dose colchicine (0.5 or 0.6 mg once or twice daily) OR Low-dose NSAID (with proton-pump inhibitor where indicated) Low-dose prednisone or prednisolone (≤10 mg/d) Gout Signs/Symptoms
Evaluate gout symptoms with urate-lowering therapy
Continue pharmacologic prophylaxis No Gout Signs/Symptoms
Treat for the LONGEST Period Among the Following • At least 6 months • 3 months after achieving target serum urate level with no tophi • 6 months after achieving target serum urate level with ≥1 tophus
Khanna D, et al. Arthritis Care Res. 2012;64:1447-1461.
Gout Flare Prophylaxis With Colchicine Flare Prevention After Starting Allopurinol
Acute Gout Flares During the 6-Month Study, Mean
â&#x20AC;˘ Colchicine dose: 0.6 mg twice daily for ~6 months (many switched dose to 0.6 mg once daily) 3.5
Colchicine
3.0
Placebo
2.5 2.0 1.5 1.0
~65% fewer flares
~80% fewer flares
0.5 0.0 Baseline to Month 3 Early
Month 4 to 6 Late
N = 43 patients starting allopurinol for crystal-proven chronic gouty arthritis. Borstad GC, et al. J Rheumatol. 2004;31:2429-2432.
Overall
2012 ACR Gout Guidelines Long-Term Management
Treat to target Serum urate level achieved?
NO
• Increase intensity of urate-lowering therapy • Re-evaluate serum urate
YES • Continue gout attack prophylaxis for ongoing gout symptoms and/or signs (≥1 tophus on physical exam) • Regularly monitor serum urate and assess for treatment adverse events • After palpable tophi and all acute and chronic symptoms have resolved, continue all measures (including pharmacologic urate-lowering therapy) to maintain serum urate at target indefinitely
Khanna D, et al. Arthritis Care Res. 2012;64:1431-1446.
Inadequate Outcomes for a “Curable” Disease
8.3 million patients with gout in US 4.5 million patients have an indication for uratelowering therapy
1.5 million patients have serum urate level <6.0 mg/dL
3.0 million patients have serum urate level ≥6.0 mg/dL
Poor treatment adherence
Treatment intolerance
Poor clinician performance
Edwards NL. Curr Rheumatol Rep. 2011;13:154-159; Juraschek SP, et al. Arthritis Care Res (Hoboken). 2015;67:588-592; Singh JA, et al. Curr Rheumatol Rep. 2013;15:307.
True treatment failure
Patients With Medication Possession Ratio ≥80%, %a
Comparing Drug Adherence Rates
80 60.8
60
40
51.2
68.4
65.4
72.3
54.6
36.8
20
0 Gout
aPercentage
Osteoporosis
Hypercholesterolemia
Seizure Disorders
T2DM
Hypothyroidism Hypertension
of days’ supply of required medications obtained by the patients over 1 year. N = 706,032 adults with ≥1 of 7 medical conditions and incident use of medication for the condition. Briesacher BA, et al. Pharmacotherapy. 2008;28:437-443.
Adherence to Urate-Lowering Therapy Improved Outcomes With a Nurse-Led Intervention Mean Serum Urate Level at Baseline, 7.7 mg/dL Intervention • Patient education • Individualized lifestyle advice • Slow upward titration of urate-lowering therapy – Usually allopurinol (median dose, 400 mg/d)
Serum urate goal not achieved
92% of patients met serum urate target of <6.0 mg/dL (85% achieved <5.0 mg/dL)
N = 106 patients with gout who completed intervention. Rees F, et al. Ann Rheum Dis. 2013;72:826-830.
2012 ACR Gout Guidelines When to Refer • Unclear etiology for hyperuricemia • Refractory signs or symptoms of gout • Difficulty reaching urate targets – Especially with renal impairment or failed trials of xanthine oxidase inhibitors • Multiple and/or serious adverse events due to pharmacologic uratelowering therapy
Khanna D, et al. Arthritis Care Res. 2012;64:1431-1446.
Linkage of Long-Term Gout Management Goals Better Recognized
Good Patient Outcomes (Elimination of Acute Attacks, Reduction in Long-Term Urate Burden)
Diagnose, Treat, and Prevent Acute Gout Flares
Identify and Manage Comorbidities and Causes of Hyperuricemia
Treat to Target Serum Urate Level No Higher Than <6.0 mg/dL
Evidence-Based Multimodal Regimens, Patent Education, and Treatment Adherence Khanna D, et al. Arthritis Care Res. 2012;64:1431-1446.
PCE Action Plan Aspirate the joint if presumptive diagnosis with ACR gout criteria is unclear, particularly if septic arthritis is possible Use ultrasound or advanced imaging when examining patients with gout, particularly in early disease Initiate pharmacologic urate-lowering therapy in all patients with tophi, multiple attacks/year, CKD stage 2 or higher, or previous urolithiasis Prescribe prophylactic anti-inflammatory therapy for at least 6 months when initiating a pharmacologic urate-lowering regimen Specifically assess patients with gout for adherence to prescribed regimens