Clinical Trials Resource Center

Kidney Failure

September 28, 2015

Trevi Therapeutics has reported results of a phase II/III trial of Nalbuphine ER for the treatment of moderate to severe uremic pruritus. The multicenter, randomized, double-blind, placebo-controlled, parallel, three-arm study evaluated Nalbuphine ER tablets dosed twice-daily at 60mg and 120mg in about 370 patients on hemodialysis in the U.S. and Europe. Patients with a wide range of mean moderate-to-severe itch intensity, ranging from 4.5 to 10 on the 10-point Numerical Rating Score (NRS) scale, were evaluated. Patients receiving 120mg of Nalbuphine ER (n=120) experienced a 3.5-point reduction in itch intensity from baseline, resulting in a highly statistically significant mean reduction in itch intensity as compared to placebo (p= 0.017). A statistically significant mean reduction for Nalbuphine ER compared to placebo was observed as early as one week following titration to the Nalbuphine ER fixed dose, and there was a statistically significant separation from placebo throughout the remaining blinded period. Sustained duration of drug effect continued to trend away from placebo through the eighth week of the study. On average, patients entered the study with a baseline mean NRS itch score of 6.9 (NRS considers a score of 7 to be severe), and at the end of the eight-week dosing period, average itch scores had been reduced to an NRS score of 3.4, which is considered mild on the NRS scale. Severe itch patients (those with NRS scores greater than or equal to 7) experienced on average an NRS score reduction of 4.5 points from baseline (p=0.007). The 60mg dose showed a numerically favorable reduction over placebo but did not achieve statistical significance. The company expects the open-label extension study to be completed by year-end.

December 6, 2010

Keryx issued positive results from a phase III trial of Zerenex for the treatment of hyperphosphatemia in patients with end-stage renal disease on dialysis. This multicenter, randomized, open-label trial enrolled 150 subjects on hemodialysis. Following a two-week washout period, the subjects were randomized to fixed doses of Zerenex 1, 6 or 8 grams per day, for a treatment period of 28 days. The primary endpoint was to demonstrate a dose response in the change of serum phosphorous from baseline (end of washout period) to end of the treatment period (day 28). The study met the primary endpoint, with the regression analysis indicating a highly statistically significant dose response (p<0.0001). In addition, a statistically significant dose response increase in serum bicarbonate was observed and there was no clinically meaningful change in serum calcium. Zerenex appeared to be safe and well-tolerated.

November 21, 2005

CuraGen reported positive results of a phase I trial of CR002, their monoclonal antibody for the treatment of kidney inflammation. Trial data indicated a positive safety profile, with no serious adverse events reported and good overall tolerability. Pharmacokinetic data indicated that meat elimination half-life was 20.1 to 34.2 days, and pharmacodynamic results indicated binding to the antibody's target molecule (platelet derived growth factor-D) for durations exceeding 20 days. This open- label placebo-controlled study enrolled 40 healthy volunteers, who received one of five single doses of the drug (0.3 mg/kg to 30 mg/kg) or placebo, with subsequent 3 month observational follow-up.

October 4, 2004

LAB International has announced positive results of a phase I/II trial of their Growth Hormone Releasing Hormone (GHRH) analog, being developed as an inhalable treatment for growth hormone (GH) deficiency caused by a number of diseases, including HIV, chronic renal failure and lipodystrophy. The drug was found to be safe and well tolerated, with no significant adverse events. Furthermore, the drug produced significant increases in serum GH levels up to 12 hours after treatment at all dosing regimens, and demonstrated a higher-than-expected efficacy for this endpoint. No impact on normal nocturnal GH secretion was observed. The placebo-controlled, single-dose safety and efficacy cross-over study enrolled a total of 10 healthy volunteers, all of whom received randomized sequential dosing regimens of 5-25 ug/kg and placebo. LAB announced plans for both indication-driven phase II trials and another phase I/II dose-ranging trial to establish minimum therapeutic dose.

June 17, 2002

Phase III trial results indicate that Fosrenol (lanthanum carbonate), a phosphate binder for use in dialysis subjects, did not adversely affect bone over 12 months of continuous therapy. Data also showed that there was no evolution towards low bone turnover states in lanthanum-treated subjects. The multicenter trial included 98 subjects beginning renal dialysis for the first time. Subjects were randomized to receive either lanthanum carbonate or calcium carbonate, which was titrated to a well-tolerated dose that gave acceptable control of serum phosphate. Bone biopsies were taken at the beginning and end of the 12-month study, and blood samples were taken at each visit. Fosrenol is being developed by Shire Pharmaceuticals and AnorMED.

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