Cinacalcet lowers serum alkaline phosphatase in maintenance hemodialysis patients.

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Belozeroff V, Goodman WG, Ren L, Kalantar-Zadeh K

Cinacalcet lowers serum alkaline phosphatase in maintenance hemodialysis patients.

Clin J Am Soc Nephrol. 2009 Mar;4(3):673-9. doi: 10.2215/CJN.03790808. Epub 2009 Mar 4.

PubMed ID

19261825 [ View in PubMed

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Abstract

BACKGROUND AND OBJECTIVES: Studies suggest an association between elevated serum alkaline phosphatase (AP) and increased mortality in hemodialysis patients, but the effect of existing therapies on AP is not fully understood. We assessed the effects of cinacalcet on AP in a secondary analysis of controlled trial data. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: This was a post hoc analysis of data from three 26-wk randomized, double-blind, placebo-controlled, phase 3 trials and a 26-wk double-blind, placebo-controlled extension trial that investigated cinacalcet in secondary hyperparathyroidism treatment in dialysis patients. Hemodialysis patients (n = 890) with intact parathyroid hormone >or=300 pg/ml and serum calcium >or=8.4 mg/dl received cinacalcet plus standard therapy or standard therapy alone for up to 52 wk. Total, not bone-specific, AP was assessed (proportion of cinacalcet/control subjects achieving a >or=20% or any AP reduction from baseline; the proportion of subjects with AP >or=120 U/L) at baseline; the end of titration; and study weeks 26, 42, and 52. RESULTS: At 52 wk, a greater proportion of cinacalcet-treated patients had either a >or=20% (39 versus 18%) or any (58 versus 36%) AP reduction compared with control subjects, respectively. The likelihood of achieving either a >or=20% or any AP reduction (determined by relative proportion) was 2.33 (95% confidence interval 1.50 to 3.61) and 1.74 (95% confidence interval 1.31 to 2.31), respectively, at week 52. Cinacalcet treatment tended toward a decreased percentage of patients with AP >or=120 U/L (baseline, 42.6%; week 52, 30.6%) compared with control (35.0 to 48.6%, respectively). CONCLUSIONS: In this combined analysis of controlled trials of patients who were receiving hemodialysis, cinacalcet lowered total serum AP.

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Drug Targets

Drug	Target	Kind	Organism	Pharmacological Action	Actions
Cinacalcet	Extracellular calcium-sensing receptor	Protein	Humans	Yes	Agonist	Details