Journal Article

Reducing high phosphate levels in patients with chronic renal failure undergoing dialysis: a 4-week, dose-finding, open-label study with lanthanum carbonate

Alastair J. Hutchison, Mary Speake and Fouad Al-Baaj

in Nephrology Dialysis Transplantation

Published on behalf of European Renal Association - European Dialysis and Transplant Assoc

Volume 19, issue 7, pages 1902-1906
Published in print July 2004 | ISSN: 0931-0509
Published online July 2004 | e-ISSN: 1460-2385 | DOI: http://dx.doi.org/10.1093/ndt/gfh282
Reducing high phosphate levels in patients with chronic renal failure undergoing dialysis: a 4-week, dose-finding, open-label study with lanthanum carbonate

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Background. The majority of patients with end-stage renal disease on dialysis are hyperphosphataemic. Lanthanum carbonate has been shown to be a highly effective phosphate binder in pre-clinical studies. A 4-week, open-label, dose-titration trial was conducted to assess the ability of lanthanum carbonate to control phosphate levels in patients with chronic renal failure.

Methods. This preliminary study was of 6 weeks duration: 2 weeks of washout followed by 4 weeks of dose titration. Patients (n = 59) were titrated on the basis of weekly serum phosphate levels from a daily dose of 375 mg lanthanum carbonate to a maximum dose of 2250 mg. Patients were maintained on the dose that controlled serum phosphate to between 1.30 and 1.80 mmol/l (4.03–5.58 mg/dl). Serum phosphate levels represented the main efficacy assessment. Safety was also evaluated.

Results. Most patients were successfully titrated to 1500 and 2250 mg lanthanum/day (mean dose at end of titration: 1278 mg). At completion of the study 70% of patients achieved a serum phosphate of ≤1.80 mmol/l. The use of lanthanum carbonate in patients undergoing continuous ambulatory peritoneal dialysis or haemodialysis was generally well tolerated.

Conclusions. Lanthanum carbonate, a new non-aluminium, non-calcium phosphate binder, effectively reduces serum phosphate levels. Results of longer-term efficacy and safety studies are awaited with interest.

Keywords: chronic renal failure; dialysis; dose titration; hyperphosphataemia; lanthanum carbonate; phosphate

Journal Article.  2293 words.  Illustrated.

Subjects: Nephrology

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