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  • Title: Early reduction in total cholesterol to high-density lipoprotein cholesterol ratio predicts hydroxychloroquine efficacy in treating IgA nephropathy.
    Author: Shi Y, Yang T, Feng Y, Li N, Shao Q, Jiang C, Liu J.
    Journal: Ren Fail; 2024 Dec; 46(2):2397046. PubMed ID: 39212237.
    Abstract:
    BACKGROUND: Hydroxychloroquine (HCQ) effectively improves lipid levels in patients with autoimmune diseases. This study aimed to examine the effect of HCQ on lipid profiles in patients with immunoglobulin A (IgA) nephropathy (IgAN) and determine whether alterations in lipid profiles can predict the efficacy of HCQ. METHODS: This study retrospectively analyzed 77 patients, and the total cholesterol to high-density lipoprotein cholesterol (TC/HDL-C) decline rate after 3 months of HCQ treatment was selected as a predictor based on receiver operating curve analysis. Patients were then divided into low and high TC/HDL-C decline rate groups based on the optimal cutoff value. The Cox proportional hazard model and Kaplan-Meier curve were used to evaluate the value of the TC/HDL-C decline rate in predicting the efficacy of HCQ in patients with IgAN. RESULTS: Patients in the high TC/HDL-C decline rate group with ≥50% decrease in proteinuria from baseline experienced a significant improvement during the follow-up. Kaplan-Meier analysis revealed that a high TC/HDL-C decline rate was strongly associated with a higher proteinuria reduction rate in patients with IgAN. Furthermore, multivariate Cox analysis indicated that a higher reduction in the TC/HDL-C ratio (hazard ratio: 2.314; 95% confidence interval: 1.234-4.340; p = 0.009) was an independent predictive indicator for achieving ≥50% reduction in proteinuria with HCQ therapy in IgAN. CONCLUSION: HCQ effectively improves lipid profiles in patients with IgAN, and an early decrease in the TC/HDL-C ratio serves as a predictor of better outcomes in patients treated with HCQ.
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