Mortality in kidney disease patients treated with phosphate binders: a randomized study

Area of Science:

• Nephrology
• Cardiovascular Medicine
• Pharmacology

Background:

• Dietary phosphorus overload and calcium intake from binders contribute to coronary artery calcification (CAC) and mortality in dialysis patients.
• CAC is prevalent even in early stages of non-dialysis-dependent chronic kidney disease (CKD).
• The impact of phosphate binders on mortality in non-dialysis-dependent CKD remains understudied.

Purpose of the Study:

• To evaluate the effect of different phosphate binders on all-cause mortality in non-dialysis-dependent CKD patients.
• To assess the impact on dialysis inception and a composite endpoint of mortality and dialysis initiation.

Main Methods:

• A randomized, multicenter, nonblinded pilot study involving 212 patients with stage 3-4 CKD.
• Patients were randomized to sevelamer (n=107) or calcium carbonate (n=105).
• Outcomes including all-cause mortality, dialysis inception, and CAC scores were monitored for up to 36 months.

Main Results:

• Sevelamer use was associated with lower all-cause mortality.
• The composite endpoint of death or dialysis inception was also lower in the sevelamer group.
• A trend towards lower dialysis inception was observed, though not statistically significant.

Conclusions:

• Sevelamer demonstrated benefits regarding all-cause mortality and the composite endpoint in non-dialysis-dependent CKD patients.
• No significant advantage was found for dialysis inception alone.
• Larger studies are required to validate these promising results.