Effects of Fenofibrate Therapy on Renal Function in Primary Gout Patients.

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To investigate the incidence and potential risk factors for development of fenofibrate-associated nephrotoxicity in gout patients.983 gout patients with fenofibrate treatment were retrospectively enrolled from the electronic record system who visited the dedicated Gout Clinic at the Affiliated Hospital of Qingdao University between September 2016 and June 2020. Fenofibrate-associated nephrotoxicity was defined as an increase in serum creatinine (SCr) ≥0.3 mg/dL within 6 months of fenofibrate initiation. The change trend of SCr and uric acid levels during treatment period were assessed by generalised additive mixed model (GAMM). Multivariate analysis was performed for risk factors affecting elevated SCr.100 (10.2%) patients experienced an increase in SCr ≥0.3 mg/dL within 6 months after fenofibrate initiation. The median (quartile) change of SCr in the whole cohort was 0.11 (0.03-0.20) mg/dL, whereas it was 0.36 (0.33-0.45) mg/dL in the fenofibrate-associated nephrotoxicity group. In a multivariable regression model, chronic kidney disease (CKD) (OR, 2.39, 95% CI,1.48-3.86) and tophus (OR, 2.29, 95% CI, 1.39-3.78) were identified to be risk predictors, independent of measured covariates, of fenofibrate-associated nephrotoxicity. During the treatment period, although SCr temporarily elevated, serum urate and triglyceride concentrations decreased resulted from the interaction analysis of GAMM. Of those with fenofibrate withdrawal records, 65% of patients' SCr was reversible after an average of 49 days off the drug.This observational study implied that fenofibrate-associated nephrotoxicity occurs frequently in gout patients, especially in patients with tophi or CKD. The potential renal risks of fenofibrate usage in gout need additional focus.



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Authors: Xinde Li, Wenyan Sun, Jie Lu, Yuwei He, Ying Chen, Wei Ren, Lingling Cui, Zhen Liu, Can Wang, Xuefeng Wang, Lidan Ma, Xiaoyu Cheng, Lin Han, Hailong Li, Hui Zhang, Xuan Yuan, Xiaopeng Ji, Aichang Ji, Tony R Merriman, Changgui Li

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