Cara Therapeutics and Vifor Fresenius Medical Care Renal Pharma Announce Positive Results From Global KALM-2 Pivotal Phase 3 Trial of KORSUVATM Injection in Hemodialysis Patients with Pruritus
- Statistically significant improvement in primary endpoint of proportion of patients with three point or greater reduction in mean Worst Itching Intensity NRS score vs. placebo (p=0.02) -
- Statistically significant improvement in key secondary endpoint of proportion of patients with four point or greater reduction in mean worst itching intensity NRS score vs. placebo (p=0.01) -
- KORSUVA Injection NDA and MAA submission expected in the second half of 2020 -
- Cara to host conference call today at
8:30 a.m. ET-
“We are very pleased with the positive topline data from our global, pivotal Phase 3 trial of KORSUVA Injection, which reinforce the robust results we reported from our
“I continue to be very impressed by the robust efficacy of KORSUVA for the treatment of pruritus in our patients undergoing hemodialysis,” said
“We are delighted with this outcome and congratulate the Cara team on the positive topline Phase 3 data on KORSUVA Injection in hemodialysis patients with moderate-to-severe pruritus,” said
CKD-aP is an intractable systemic itch condition that occurs with high frequency and intensity in patients undergoing hemodialysis. Multiple studies estimate that at least 40% of dialysis patients suffer from pruritus. The FDA has granted Breakthrough Therapy designation to KORSUVA Injection for this indication.
KALM-2 Efficacy Data:
- Primary Endpoint: The proportion of patients on 0.5 mcg/kg of KORSUVA Injection achieving a three-point or greater improvement from baseline in the weekly mean of the daily 24 hour Worst Itching Intensity Numeric Rating Scale (WI-NRS) score at week 12 was 54% versus 42% for patients on placebo (p= 0.02).
- Key Secondary Endpoint: The proportion of patients on 0.5 mcg/kg of KORSUVA Injection achieving a four-point or greater improvement from baseline in the weekly mean of the daily 24 hour WI-NRS score at week 12 was 41% versus 28% for patients on placebo (p= 0.01).
- Itch-Related Quality of Life Measures: Patients on KORSUVA Injection experienced a 12% and 29% numerical improvement in the average total
Skindex-10 and total 5-D Itch scores, respectively, which did not meet statistical significance.
KALM-2 Safety and Tolerability:
KORSUVA Injection was generally well-tolerated with a safety profile consistent with that seen in KALM-1 and the KORSUVA clinical program in patients with CKD-aP. Overall, the incidence of adverse events (AEs) and serious AEs were similar across both KORSUVA and placebo groups. The most common treatment-emergent AEs reported in >5% of patients were diarrhea (8.1% KORSUVA versus 5.5% placebo), falling (6.8% KORSUVA versus 5.1% placebo), vomiting (6.4% KORSUVA versus 5.9% placebo), nausea (6.4% KORSUVA versus 4.2% placebo) and dizziness (5.5% KORSUVA versus 5.1 % placebo).
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Cara management will host a conference call today at
To participate in the conference call, please dial (855) 445-2816 (domestic) or (484) 756-4300 (international) and refer to conference ID 1681438. A live webcast of the call can be accessed under "Events & Presentations" in the News & Investors section of Cara’s website at www.CaraTherapeutics.com.
An archived webcast recording will be available on the Cara website beginning approximately two hours after the call.
KALM-2 Phase 3 Trial Design
KALM-2 is a Phase 3, global, multicenter, randomized, double-blind, placebo-controlled, 12-week trial (with a 52-week open label extension phase) designed to evaluate the safety and efficacy of 0.5 mcg/kg KORSUVA (CR845/difelikefalin) Injection in 473 hemodialysis patients with moderate-to-severe pruritus.
The primary efficacy endpoint is the proportion of patients achieving at least a three‑point improvement from baseline in the weekly mean of the daily 24‑hour WI-NRS score at week 12.
Secondary endpoints include assessment of the proportion of patients achieving four-point or greater improvement from baseline in weekly mean of the daily 24-hour WI-NRS score at week 12, as well as itch-related quality of life changes measured using the validated self-assessment 5-D itch and
CKD-aP is an intractable systemic itch condition that occurs with high frequency and intensity in patients with chronic kidney disease undergoing dialysis. Pruritus has also been reported in patients with stage III-V CKD who are not on dialysis. Aggregate, longitudinal, multi-country studies estimate the weighted prevalence of CKD-aP to be approximately 40% in patients with end-stage renal disease (ESRD), with approximately 25% of patients reporting severe pruritus. The majority of dialysis patients (approximately 60 to 70%) report pruritus, with 30 to 40% reporting moderate or severe pruritus.1,2 Recent data from the ITCH National Registry Study showed that among those with pruritus, approximately 59% 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 antipruritic treatments, such as antihistamines 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.3 CKD-aP is also an independent predictor of mortality among hemodialysis patients, mainly related to increased risk of inflammation and infections.
- Pisoni RL, et al. Pruritus in haemodialysis patients: international results from the Dialysis Outcomes and Practice Patterns Study. Nephrol Dial Transplant. 2006; 21:3495-3505.
- Ramakrishnan K, et al. Clinical characteristics and outcomes of end-stage renal disease patients with self-reported pruritus symptoms. International Journal of Nephrology and Renovascular Disease. 2014; 7: 1-12.
- Mathur VS, et al. A longitudinal study of Uremic Pruritus in hemodialysis patients. Clin J Am Soc Nephrol. 2010; 5(8):1410-1419.
The FDA has conditionally accepted KORSUVA™ as the trade name for difelikefalin injection. CR845/difelikefalin is an investigational drug product and its safety and efficacy have not been fully evaluated by any regulatory authority.
About Vifor Pharma and
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 plans, strategies and expectations for the future, including the planned timing of future regulatory submissions; the size of the potential markets that are potentially addressable for Cara’s product candidates, including the pruritus market and the potential for KORSUVA Injection to be a therapeutic option for CKD-aP. 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 Cara's filings with the
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Source: Cara Therapeutics, Inc.