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Erschienen in: Clinical Rheumatology 12/2020

26.05.2020 | Original Article

Comparison of persistence rates between allopurinol and febuxostat as first-line urate-lowering therapy in patients with gout: an 8-year retrospective cohort study

verfasst von: Aran Kim, Yunkyung Kim, Geun-Tae Kim, Eunyoung Ahn, Min Wook So, Seung-Geun Lee

Erschienen in: Clinical Rheumatology | Ausgabe 12/2020

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Abstract

Introduction/objectives

Lifelong urate-lowering therapy (ULT) with xanthine oxidase inhibitors (XOIs), such as allopurinol and febuxostat, is the cornerstone of gout treatment. This study aimed to compare drug persistence between allopurinol and febuxostat as first-line ULT in patients with gout in real practice.

Method

In this retrospective cohort study, we evaluated 602 patients with gout in whom allopurinol or febuxostat was newly initiated from December 2011 to November 2018 at a tertiary rheumatology centre. Persistence was defined as the duration from the first description date to the end of treatment with XOIs or the end of the study period (November 2019).

Results

Among the 602 gout patients, the mean age was 60.2 years and 234 (38.9%) patients had tophi. Allopurinol and febuxostat were started in 237 (39.3%) and 365 (60.6%) patients, respectively. During the study period, 282 (46.8%) patients stopped taking XOIs, and the most common reason for XOI withdrawal was poor health literacy (61.3%). The 1- and 5-year persistence rates of XOIs were 67.2% and 40.9%, respectively. In the Kaplan–Meier analysis, persistence rates of allopurinol were significantly lower than those of febuxostat (p < 0.001). In the multivariable Cox regression model, allopurinol use was a significant risk factor for discontinuation of XOIs (HR = 2.01, p < 0.001). In addition, the presence of tophi and symptom duration < 24 months was independently associated with a higher risk of XOI withdrawal.

Conclusions

Long-term persistence of XOIs was suboptimal, and allopurinol had worse persistence rates than febuxostat among patients with gout.
Key Points
• Long-term persistence of xanthine oxidase inhibitors (XOIs) as first-line urate-lowering therapy (ULT) among patients with gout was suboptimal, and the major reason for XOI discontinuation was poor health literacy in our study.
• We demonstrated that allopurinol had worse persistence rates than febuxostat among patients with gout, suggesting that febuxostat is a better option for long-term ULT in light of medication adherence in a real-world setting.
• Patients with gout with tophi and shorter symptom duration were found to be at high risk for poor persistence of XOIs.
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Metadaten
Titel
Comparison of persistence rates between allopurinol and febuxostat as first-line urate-lowering therapy in patients with gout: an 8-year retrospective cohort study
verfasst von
Aran Kim
Yunkyung Kim
Geun-Tae Kim
Eunyoung Ahn
Min Wook So
Seung-Geun Lee
Publikationsdatum
26.05.2020
Verlag
Springer International Publishing
Erschienen in
Clinical Rheumatology / Ausgabe 12/2020
Print ISSN: 0770-3198
Elektronische ISSN: 1434-9949
DOI
https://doi.org/10.1007/s10067-020-05161-w

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