International journal of rheumatic diseases · 2023
Analysis of appropriate duration of colchicine prophylaxis to maximize the persistence of xanthine oxidase inhibitors as the first-line urate-lowering therapy in patients with gout using the Korean Health Insurance Review and Assessment Service database.
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So Min Wook, Kim A-Ran, Lee Seung-Geun
Аннотация
INTRODUCTION: We investigated the appropriate duration of colchicine prophylaxis to maximize the persistence of xanthine oxidase inhibitors (XOIs) as first-line urate-lowering therapy (ULT) in patients with gout. This was a nationwide population-based retrospective cohort study using the Korean Health Insurance Review and Assessment database.
METHODS: Patients with gout aged ≥20 years who were newly initiated on XOIs, such as allopurinol or febuxostat, from July 2015 to June 2017 and received these medications for ≥6 months were analyzed and followed up until June 2019. Persistence of XOIs was compared according to the 6-month duration of colchicine prophylaxis. For additional subgroup analysis, we also compared the persistence of XOIs according to the 3-month duration of colchicine prophylaxis.
RESULTS: This study included 43 926 patients. The frequencies of patients with gout receiving colchicine prophylaxis for ≥6 months and ≥3 months were 6.3% and 7.6%, respectively. Allopurinol (65.2%) was prescribed more frequently than febuxostat (34.8%). During the study period, 23 475 patients (53.4%) stopped using XOIs. Colchicine prophylaxis for ≥6 months did not significantly reduce the risk of XOI discontinuation in multivariable Cox regression models. Colchicine prophylaxis for ≥3 months was significantly associated with a lower risk of non-persistence to XOIs after adjusting for confounding factors (hazard ratio = 0.95, p = .041).
CONCLUSION: Our data suggest that at least 3 months of colchicine prophylaxis may be more appropriate than at least 6 months in terms of maximizing the persistence of XOIs in patients with gout.
METHODS: Patients with gout aged ≥20 years who were newly initiated on XOIs, such as allopurinol or febuxostat, from July 2015 to June 2017 and received these medications for ≥6 months were analyzed and followed up until June 2019. Persistence of XOIs was compared according to the 6-month duration of colchicine prophylaxis. For additional subgroup analysis, we also compared the persistence of XOIs according to the 3-month duration of colchicine prophylaxis.
RESULTS: This study included 43 926 patients. The frequencies of patients with gout receiving colchicine prophylaxis for ≥6 months and ≥3 months were 6.3% and 7.6%, respectively. Allopurinol (65.2%) was prescribed more frequently than febuxostat (34.8%). During the study period, 23 475 patients (53.4%) stopped using XOIs. Colchicine prophylaxis for ≥6 months did not significantly reduce the risk of XOI discontinuation in multivariable Cox regression models. Colchicine prophylaxis for ≥3 months was significantly associated with a lower risk of non-persistence to XOIs after adjusting for confounding factors (hazard ratio = 0.95, p = .041).
CONCLUSION: Our data suggest that at least 3 months of colchicine prophylaxis may be more appropriate than at least 6 months in terms of maximizing the persistence of XOIs in patients with gout.