Supplementary Material for: Long-Term Evaluation of Colestilan in Chronic Kidney Disease Stage 5 Dialysis Patients with Hyperphosphataemia

Background: This study investigated in a North American patient population the longer-term treatment effects of the phosphate binder, colestilan, in patients with CKD Stage 5D and hyperphosphataemia. Methods: One hundred and sixteen CKD Stage 5D patients with hyperphosphataemia were entered into a multi-centre, open-label study where they received flexible dose colestilan (6-15 g/day) to maintain serum phosphorus levels between 3.5 and 5.5 mg/dl. The primary endpoint was safety, assessed by treatment-emergent adverse events. Efficacy was assessed by changes in serum phosphorus, mineral metabolism, lipids, HbA1c, uric acid and bone markers. Results: Serum phosphorus was significantly reduced by 1.18 mg/dl (p < 0.001), from 6.99 mg/dl at baseline to 5.80 mg/dl at week 52. LDL-cholesterol was also significantly reduced as well as uric acid. Significant change was observed only for one bone marker - PINP. Most adverse events were of mild or moderate intensity. Nausea (22.4%), vomiting (21.6%), and diarrhoea (19.8%) were most commonly reported. Conclusions: Long-term flexible dosing with colestilan reduces serum phosphorus and demonstrates an acceptable safety and tolerability profile.