Phosphate-Binding Agents in Adults With CKD: A Network Meta-analysis of Randomized Trials

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• 作者：Suetonia C. Palmer ; PhD¹ ; Sharon Gardner ; MA¹ ; Marcello Tonelli ; MD² ; Dimitris Mavridis ; PhD³ ; ⁴ ; David W. Johnson ; PhD⁵ ; Jonathan C. Craig ; PhD⁶ ; Richard French ; MBChB⁷ ; Marinella Ruospo ; MScMed⁸ ; ⁹ ; Giovanni F.M. Strippoli ; PhD⁶ ; ⁹ ; ¹⁰ ; ^{gfmstrippoli@gmail.com" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Phosphate-binding agents ; phosphate binder ; sevelamer ; lanthanum ; calcium ; iron ; chronic kidney disease (CKD) ; mortality ; meta-analysis
• 刊名：American Journal of Kidney Diseases
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：68
• 期：5
• 页码：691-702
• 全文大小：483 K

文摘

Guidelines preferentially recommend noncalcium phosphate binders in adults with chronic kidney disease (CKD). We compare and rank phosphate-binder strategies for CKD.

Study Design

Network meta-analysis.

Setting & Population

Adults with CKD.

Selection Criteria for Studies

Randomized trials with allocation to phosphate binders.

Interventions

Sevelamer, lanthanum, iron, calcium, colestilan, bixalomer, nicotinic acid, and magnesium.

Outcomes

The primary outcome was all-cause mortality. Additional outcomes were cardiovascular mortality, myocardial infarction, stroke, adverse events, serum phosphorus and calcium levels, and coronary artery calcification.

Results

77 trials (12,562 participants) were included. Most (62 trials in 11,009 patients) studies were performed in a dialysis population. Trials were generally of short duration (median, 6 months) and had high risks of bias. All-cause mortality was ascertained in 20 studies during 86,744 patient-months of follow-up. There was no evidence that any drug class lowered mortality or cardiovascular events when compared to placebo. Compared to calcium, sevelamer reduced all-cause mortality (OR, 0.39; 95% CI, 0.21-0.74), whereas treatment effects of lanthanum, iron, and colestilan were not significant (ORs of 0.78 [95% CI, 0.16-3.72], 0.37 [95% CI, 0.09-1.60], and 0.55 [95% CI, 0.07-4.43], respectively). Lanthanum caused nausea, whereas sevelamer posed the highest risk for constipation and iron caused diarrhea. All phosphate binders lowered serum phosphorus levels to a greater extent than placebo, with iron ranked as the best treatment. Sevelamer and lanthanum posed substantially lower risks for hypercalcemia than calcium.

Limitations

Limited testing of consistency; short follow-up.

Conclusions

There is currently no evidence that phosphate-binder treatment reduces mortality compared to placebo in adults with CKD. It is not clear whether the higher mortality with calcium versus sevelamer reflects whether there is net harm associated with calcium, net benefit with sevelamer, both, or neither. Iron-based binders show evidence of greater phosphate lowering that warrants further examination in randomized trials.