PMID- 29017162 OWN - NLM STAT- MEDLINE DCOM- 20180614 LR - 20231112 IS - 1421-9670 (Electronic) IS - 0250-8095 (Print) IS - 0250-8095 (Linking) VI - 46 IP - 4 DP - 2017 TI - Patiromer Lowers Serum Potassium When Taken without Food: Comparison to Dosing with Food from an Open-Label, Randomized, Parallel Group Hyperkalemia Study. PG - 323-332 LID - 10.1159/000481270 [doi] AB - BACKGROUND: Patiromer is a sodium-free, nonabsorbed, potassium binder approved for treatment of hyperkalemia. This open-label study compares the efficacy and safety of patiromer administered without food versus with food. METHODS: Adults with hyperkalemia (potassium >/=5.0 mEq/L) were randomized (1:1) to receive patiromer once daily without food or with food for 4 weeks. The dosage was adjusted (maximum: 25.2 g/day) using a prespecified titration schedule to achieve and maintain potassium within a target range (3.8-5.0 mEq/L). The primary efficacy endpoint was the proportion of patients with serum potassium in the target range at either week 3 or week 4. Safety was assessed by adverse events (AEs) and laboratory testing. RESULTS: Efficacy was evaluated in 112 patients; 65.2% were >/=65 years of age, 75.9% had chronic kidney disease, and 82.1% had diabetes. Baseline mean serum potassium was similar in the without-food (5.44 mEq/L) and with-food (5.34 mEq/L) groups. The primary endpoint was achieved by 87.3% (95% CI 75.5-94.7) and 82.5% (95% CI 70.1-91.3) of patients in the with-food and without-food groups, respectively; least squares mean changes in serum potassium from baseline to week 4 were -0.65 and -0.62 mEq/L, respectively (p < 0.0001). The most common AEs were diarrhea and constipation. Serum K+ remained >/=3.5 mEq/L in all patients; 5 patients developed serum magnesium <1.4 mg/dL, including 4 whose baseline magnesium was below the lower limit of normal. CONCLUSION: Patiromer is equally effective and well tolerated when taken without food or with food, thereby offering the potential for dosing flexibility. CI - (c) 2017 The Author(s) Published by S. Karger AG, Basel. FAU - Pergola, Pablo E AU - Pergola PE AD - Renal Associates, P.A., San Antonio, TX, USA. FAU - Spiegel, David M AU - Spiegel DM FAU - Warren, Suzette AU - Warren S FAU - Yuan, Jinwei AU - Yuan J FAU - Weir, Matthew R AU - Weir MR LA - eng PT - Clinical Trial PT - Comparative Study PT - Journal Article DEP - 20171011 PL - Switzerland TA - Am J Nephrol JT - American journal of nephrology JID - 8109361 RN - 0 (Angiotensin-Converting Enzyme Inhibitors) RN - 0 (Chelating Agents) RN - 0 (Polymers) RN - 1FQ2RY5YHH (patiromer) RN - I38ZP9992A (Magnesium) RN - RWP5GA015D (Potassium) SB - IM MH - Aged MH - Aged, 80 and over MH - Angiotensin-Converting Enzyme Inhibitors/adverse effects MH - Chelating Agents/*pharmacology/therapeutic use MH - Constipation/chemically induced/epidemiology MH - Diarrhea/chemically induced/epidemiology MH - Female MH - *Food-Drug Interactions MH - Humans MH - Hyperkalemia/blood/*drug therapy/etiology MH - Magnesium/blood MH - Male MH - Middle Aged MH - Polymers/*pharmacology/therapeutic use MH - Potassium/*blood MH - Random Allocation MH - Renal Insufficiency, Chronic/blood/complications/*drug therapy MH - Treatment Outcome PMC - PMC5804834 OTO - NOTNLM OT - Hyperkalemia OT - Patiromer OT - Potassium EDAT- 2017/10/11 06:00 MHDA- 2018/06/15 06:00 PMCR- 2017/10/11 CRDT- 2017/10/11 06:00 PHST- 2017/08/04 00:00 [received] PHST- 2017/08/30 00:00 [accepted] PHST- 2017/10/11 06:00 [pubmed] PHST- 2018/06/15 06:00 [medline] PHST- 2017/10/11 06:00 [entrez] PHST- 2017/10/11 00:00 [pmc-release] AID - 000481270 [pii] AID - ajn-0046-0323 [pii] AID - 10.1159/000481270 [doi] PST - ppublish SO - Am J Nephrol. 2017;46(4):323-332. doi: 10.1159/000481270. Epub 2017 Oct 11.