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

Author:

So Min Wook12ORCID,Kim A‐Ran134,Lee Seung‐Geun134ORCID

Affiliation:

1. Department of Internal Medicine Pusan National University School of Medicine Yangsan South Korea

2. Division of Rheumatology, Department of Internal Medicine Pusan National University Yangsan Hospital Yangsan South Korea

3. Division of Rheumatology, Department of Internal Medicine Pusan National University Hospital Busan South Korea

4. Biomedical Research Institute Pusan National University Hospital Busan South Korea

Abstract

AbstractIntroductionWe 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.MethodsPatients 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.ResultsThis 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).ConclusionOur 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.

Funder

Pusan National University

Publisher

Wiley

Subject

Rheumatology

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