PMID- 32651955 OWN - NLM STAT- MEDLINE DCOM- 20211125 LR - 20211125 IS - 1460-2385 (Electronic) IS - 0931-0509 (Print) IS - 0931-0509 (Linking) VI - 36 IP - 8 DP - 2021 Jul 23 TI - Efficacy and safety of PT20, an iron-based phosphate binder, for the treatment of hyperphosphataemia: a randomized, double-blind, placebo-controlled, dose-ranging, Phase IIb study in patients with haemodialysis-dependent chronic kidney disease. PG - 1399-1407 LID - 10.1093/ndt/gfaa116 [doi] AB - BACKGROUND: Hyperphosphataemia is a common complication of chronic kidney disease (CKD). PT20 (ferric iron oxide adipate) is an investigational molecule engineered to offer enhanced phosphate-binding properties relative to other phosphate binders. METHODS: In this double-blind, parallel-group, placebo-controlled, dose-ranging study (ClinicalTrials.gov identifier NCT02151643), the efficacy and safety of 28 days of oral PT20 treatment were evaluated in patients with dialysis-dependent CKD. Participants were randomly assigned in an 8:8:8:13:13 ratio to receive PT20 (400, 800, 1600 or 3200 mg) or placebo three times daily. RESULTS: Among 153 participants, 129 completed treatment [7 discontinued because of adverse events (AEs), 2 because of hyperphosphataemia and 15 for other reasons]. PT20 treatment for 28 days resulted in a statistically significant and dose-dependent reduction in serum phosphate concentration. There were no statistically significant effects of PT20 treatment on changes in haemoglobin or ferritin concentrations or transferrin saturation between Days 1 and 29. The incidence of treatment-emergent AEs was broadly similar across the PT20 and placebo groups (42-59% versus 44%). The most common PT20 treatment-related AEs were gastrointestinal, primarily diarrhoea (13-18%) and discoloured faeces (3-23%). No serious AEs were considered to be related to study treatment. There were no clinically significant changes in laboratory results reflecting acid/base status or increases in ferritin that could indicate the absorption of components of PT20. CONCLUSIONS: In this first study investigating the efficacy and safety of PT20 in patients with hyperphosphataemia and dialysis-dependent CKD, PT20 significantly lowered serum phosphate concentrations and was generally well tolerated. CI - (c) The Author(s) 2020. Published by Oxford University Press on behalf of ERA-EDTA. All rights reserved. FAU - Sampson, Mark AU - Sampson M AD - Shield Therapeutics PLC, London, UK. FAU - Faria, Nuno AU - Faria N AD - Department of Veterinary Medicine, University of Cambridge, Cambridge, UK. AD - Medical Research Council Elsie Widdowson Laboratory, Cambridge, UK. FAU - Powell, Jonathan J AU - Powell JJ AD - Department of Veterinary Medicine, University of Cambridge, Cambridge, UK. AD - Medical Research Council Elsie Widdowson Laboratory, Cambridge, UK. CN - PEACH study investigators LA - eng SI - ClinicalTrials.gov/NCT02151643 GR - MR/R005699/1/MRC_/Medical Research Council/United Kingdom PT - Clinical Trial, Phase II PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't PL - England TA - Nephrol Dial Transplant JT - Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association JID - 8706402 RN - 0 (Phosphates) RN - E1UOL152H7 (Iron) SB - IM MH - Double-Blind Method MH - Humans MH - *Hyperphosphatemia/drug therapy/etiology MH - Iron MH - Phosphates MH - Renal Dialysis MH - *Renal Insufficiency, Chronic/complications/therapy PMC - PMC8311578 OTO - NOTNLM OT - PT20 OT - chronic kidney disease OT - ferric oxide OT - hyperphosphataemia OT - phosphate binder EDAT- 2020/07/12 06:00 MHDA- 2021/11/26 06:00 PMCR- 2020/07/11 CRDT- 2020/07/12 06:00 PHST- 2019/07/25 00:00 [received] PHST- 2020/07/12 06:00 [pubmed] PHST- 2021/11/26 06:00 [medline] PHST- 2020/07/12 06:00 [entrez] PHST- 2020/07/11 00:00 [pmc-release] AID - 5870136 [pii] AID - gfaa116 [pii] AID - 10.1093/ndt/gfaa116 [doi] PST - ppublish SO - Nephrol Dial Transplant. 2021 Jul 23;36(8):1399-1407. doi: 10.1093/ndt/gfaa116.