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  • Title: Efficacy and safety of lanthanum carbonate in pre-dialysis CKD patients with hyperphosphatemia: a randomized trial.
    Author: Takahara Y, Matsuda Y, Takahashi S, Shigematsu T, Lanthanum Carbonate Study Group.
    Journal: Clin Nephrol; 2014 Sep; 82(3):181-90. PubMed ID: 25079863.
    Abstract:
    BACKGROUND: Lanthanum carbonate (LC), an effective non-calcium phosphate binder is widely used to manage hyperphosphatemia in patients with chronic kidney disease (CKD) on dialysis. Recently, the additional indication for control of hyperphosphatemia in CKD patients not on dialysis has been approved. METHODS: A multicenter, randomized, double-blind, placebo-controlled trial to confirm the efficacy and safety of LC in Japanese hyperphosphatemic stage 4 - 5 CKD patients not on dialysis. After a 4-week run-in period, 143 eligible subjects with serum phosphate levels of 5.6 - 11.0 mg/dL were randomized (2 : 1) to receive LC or placebo (88 vs. 55) for 8 weeks; 119 subjects completed the study (76 vs. 43). The starting LC dose was 750 mg/day, which was then up-titrated to 2,250 mg/day as needed while tolerated. Primary efficacy analysis was performed on the intent-to-treat (ITT) population of 141 patients (86 vs. 55). RESULTS: LC produced a significantly greater reduction in serum phosphate level compared with placebo after 8 weeks of treatment (difference, 0.97 (95% CI: 0.58, 1.37) mg/ dL; p < 0.0001). The cumulative proportion of subjects with controlled phosphate levels ≤ 4.6 mg/dL was higher in the LC group than the placebo group (59.56% vs. 10.46%). LC caused significantly greater reductions in serum Ca × P product and urinary phosphate excretion compared with placebo. The safety profile of LC was similar to that of placebo. CONCLUSIONS: This study demonstrated the effectiveness of LC to control hyperphosphatemia in pre-dialysis CKD patients.
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