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  • Title: Efficacy of body weight vs body surface area-based prednisolone regimen in nephrotic syndrome.
    Author: Basu B, Bhattacharyya S, Barua S, Naskar A, Roy B.
    Journal: Clin Exp Nephrol; 2020 Jul; 24(7):622-629. PubMed ID: 32201918.
    Abstract:
    BACKGROUND: Prednisolone dosing regimen based on body surface area (BSA) or body weight (BW) in managing uncomplicated nephrotic syndrome (NS) has been a matter of controversy. METHODS: In this parallel-arm randomized clinical trial, 60 children with uncomplicated NS in relapse were randomized to receive either of two regimens. Children of BW cohort received prednisolone (2 mg/kg/day) till remission (or 6 weeks for first episode); followed by 1.5 mg/kg on alternate days for 4 weeks (or 6 weeks for first episode). Children randomized for BSA cohort received prednisolone (60 mg/m2/day) till remission (or 6 week for first episode); followed by 40 mg/m2 on alternate days for 4 weeks (or 6 weeks for first episode). The primary endpoint was 6-month relapse-free survival in the intention-to-treat population (clinical trial registry of India CTRI/2015/03/005655). RESULTS: The 6-month relapse-free survival rates were similar for both BSA cohort 73.33% (22/30) and BW cohort 70% (21/30) (p = 1, OR 0.19, 95% CI 0.07-0.52). Requirement of cumulative steroid to achieve initial remission (96.1 ± 57.8 vs 63.58 ± 40.2 mg/kg, p = 0.014) and over 6-month study period (104.34 ± 50.82 vs 73.88 ± 42.95 mg/kg, p = 0.015) were significantly higher in BSA cohort in comparison to BW cohort. However, time taken in achieving remission during enrolment episode in both BSA and BW groups was comparable (7 ± 1.7 vs 6.9 ± 1.4 days, p = 0.81). While both treatments were well tolerated, the number of adverse events was one and half times as common in the BSA group than BW group (37 vs. 22 events). CONCLUSIONS: In treating children with uncomplicated NS, both BSA and BW regimens were equally effective in achieving initial remission and maintaining disease remission. Due to fewer adverse events and lesser cumulative steroid exposure with BW based regimen, it may be considered as better option over BSA regimen. CLINICAL TRIAL REGISTRY NAME: Clinical Trial Registry of India (CTRI/2015/03/005655).
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