- Part A of the trial will evaluate three doses of I.V. CR845 versus placebo in 160 dialysis patients -
- Top-line data expected in first quarter of 2017 -
"We're very pleased to
have completed enrollment as planned for Part A of the Phase 2/3 trial in pruritus associated with chronic kidney disease, as these eight-week data will determine the optimal dosing to carry forward into planned registration trials. In our previous Phase 2 trial, I.V. CR845 significantly reduced itch and improved the quality of life for dialysis patients with this condition over a two-week treatment period," said
About the Phase 2/3 Adaptive Trial
The Phase 2/3 trial is being conducted in a two-part adaptive design:
Primary and secondary endpoints will include itch intensity and quality of life measures associated with pruritus burden, using a series of previously validated self-assessment scales.
About the Prior Phase 2 Trial of I.V. CR845 in Uremic Pruritus
The previously conducted Phase 2 trial was a double-blind, randomized, placebo-controlled trial designed to evaluate the efficacy of I.V. CR845 (1.0 mcg/kg) compared to placebo in reducing the intensity of itch in dialysis patients over a two-week dosing period. The trial enrolled 65 dialysis patients at multiple sites in the
The primary endpoint of the Phase 2 trial was the change from baseline of the average worst itching during the second week of treatment, as recorded on a visual analog scale (VAS). Patients receiving I.V. CR845 experienced a 54 percent greater reduction in worst itch scores than those receiving placebo (p-value = 0.016), with an average reduction of -48 percent from baseline as measured by the VAS. I.V. CR845-treated patients also exhibited statistically significant reductions in both daytime (-51 percent, p=0.03) and nighttime (-75 percent, p=0.007) worst itch scores compared to placebo treatment.
Secondary endpoints focused on quality of life measures associated with pruritus using a series of previously validated self-assessment scales, including the
About Uremic Pruritus
Uremic pruritus (UP) is an intractable systemic itch condition that occurs with the greatest frequency and intensity in chronic kidney disease (CKD) patients under hemodialysis (HD) and peritoneal dialysis; however, pruritus has also been reported in CKD patients who are not yet on dialysis. Aggregate, longitudinal, multi-country studies calculate the weighted prevalence of UP to be approximately 40 percent of patients with end-stage renal disease (ESRD), with approximately 24 percent of patients reporting severe pruritus. Similarly, the majority of dialysis patients (approximately 60 percent) report pruritus, with 30 to 40 percent reporting moderate or severe pruritus. Recent data from the ITCH National Registry Study showed that among those with pruritus, 59 percent had experienced symptoms daily or nearly daily for more than a year. Given its association with CKD/ESRD, most afflicted patients will continue to have symptoms for months or years with currently employed anti-pruritic treatments, such as anti-histamines and corticosteroids, unable to provide consistent adequate relief. Moderate-to-severe chronic pruritus has repeatedly been shown to directly decrease quality of life, contribute to symptoms that impair quality of life (such as poor sleep quality), and is associated with depression. UP is also an independent predictor of mortality among HD patients, mainly related to increased risk of inflammation and infections.
Statements contained in this press release regarding matters that are not historical facts are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. Examples of these forward-looking statements include statements concerning the expected timing of the reporting results of the trial, the expected timing of the initiation of Part B
of the trial for I.V. CR845 for UP, the ability of the trial to demonstrate an extended patient benefit, and the potential for I.V. CR845 to be a therapeutic option for UP. Because such statements are subject to risks and uncertainties, actual results may differ materially from those expressed or implied by such forward-looking statements. Risks are described more fully in
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