Chris Posner
Analyst · Stifel. Your question please, Annabel
Thanks, Matt. Good afternoon, and thank you for joining our call. With me today are Ryan Maynard, our Chief Financial Officer, and Dr. Joana Goncalves, our Chief Medical Officer. Significant developments in 2023 led us to sharpen Cara's strategy and focus. We announced in January of this year that we have prioritized the program with the highest likelihood of clinical and commercial success, oral difelikefalin for notalgia paresthetica or NP. Focusing all our resources on NP extends our cash runway into 2026, which allows us to reach all value inflection milestones in this program. NP is a highly underserved neuropathic condition with a sizable patient population and no approved therapies. We are optimistic that oral difelikefalin, if approved, could become the first and only oral antipyretic therapy for NP. I want to highlight why NP has such potential and detail how our late-stage oral difelikefalin clinical program can address it. Notalgia paresthetica is an unexplored neuropathy, and yet NP is relatively common. The disease is a chronic neuropathic pruritic condition characterized by pruritus of the upper back, often leading to pigment changes as a result of excessive scratching. Notalgia paresthetica has been dramatically understudied. But as I will highlight in a bit, anecdotal evidence suggests and we believe that chronic neuropathic pruritus is often as onerous as chronic pain in terms of impacting the quality of life of patients. And while chronic pain has been targeted and studied extensively, chronic neuropathic pruritus has not. An estimated 34 million US patients or 13% of the adult population suffer from chronic pruritus, and approximately $2.7 million or 8% of them have chronic neuropathic pruritus. Now out of those chronic neuropathic pruritus patients, 650,000 or 24% are notalgia paresthetica patients under the care of a health care provider, predominantly a dermatologist. This number does not account for the many miss or undiagnosed patients. Notalgia paresthetica has a significant impact on the quality of life of patients, including on their mood, sleep and self-care activities. And yet this significant health challenge has no current treatment or wide-ranging efforts to address it. Anecdotal feedback from patients suggest that their pruritus is often constant and is as debilitating as pain. There are no approved treatments for notalgia paresthetica and off-label use of other therapies frequently topical and systemic treatments indicated for neuropathic pain are mostly ineffective or associated with significant side effects. In market research, almost 90% of NP patients responded that the treatments that they had been offered for NP had been minimally or not at all helpful. As a result, almost 75% of responders stated that they were not currently on any therapy for NP. It is clear from the literature and our market research that there is a significant unmet need for an effective, safe and well-tolerated treatment for NP. Our oral DSK program could lead the way to target and address notalgia paresthetica's hallmark chronic neuropathic pruritus. We believe oral DFK's neuromodulatory action presents an ideal mechanistic approach to treating chronic neuropathic pruritus. In our Phase 2 proof-of-concept study in NP, oral DSK at a 2 mg BID dose showed a statistically significant separation from placebo on the worst itch NRS scale as early as day one. It also showed sustained efficacy throughout the double-blind eight-week treatment period. The publication of these data in the February 2023 New England Journal of Medicine has attracted a lot of attention from thought leaders, investigators and patients. Highlighting the significant unmet need, this excitement has resulted in rapid enrollment in the ongoing dose-finding portion of our Phase 2/3 COURAGE I study. I am pleased to announce that we have completed enrollment in COURAGE I Part A ahead of schedule, putting us on track to report top line efficacy and safety results in Q3 of this year. As a reminder, Courage I is comprised of two parts. Part A, the dose-finding portion of the study is a double-blind, placebo-controlled eight-week study comparing three dosage strengths of oral DSK to placebo. We currently have 53 active sites in North America and Europe, and we plan to include additional sites for the pivotal portion of the program. The primary endpoint is the proportion of patients with a greater than four-point improvement at week eight from baseline in the worst itch NRS scale. The readout from this portion of the trial will provide key information specifically the dose and sample size to initiate the Phase 3 pivotal portion of the program, Part B of Courage I and the second study COURAGE II. Ahead of these top line data, we will be hosting a panel of renowned dermatology KOLs to discuss the unmet need in NP and the potential role of oral DSK in this underserved disease and wide open therapeutic indication. We will issue an announcement with details of this event in the coming days, and we hope you will join us. Moving on to KORSUVA injection. In the fourth quarter 2023, we saw a strong quarter-to-quarter demand growth of 22% as reflected by the vial ship to individual clinics. This continued growth in demand is a clear testament to the value and clinical benefit KORSUVA offers to patients and their providers. However, with unfavorable reimbursement changes following the end of the TDAPA period on March 31 this year, we anticipate that Dos, dialysis organizations, will modify current treatment protocols and significantly restrict access to KORSUVA. As a result, we do not expect meaningful revenue contributions from KORSUVA going forward. Let me conclude by reiterating the following over the three months. We have taken decisive and swift action. We have evolved our strategy and meaningfully extended our cash runway by sharpening our focus on the program with the highest potential. Notalgia paresthetica has the ingredients for a breakout program with a high probability of clinical and commercial success. I am confident and optimistic that we are on the right path to unlock Cara’s growth potential and create sustainable value for all our stakeholders. I would now like to turn the call over to Ryan for additional details on our fourth quarter results. Over to you, Ryan.