Aine Miller
Analyst · Julian Harrison from BTIG. Your question, please
Thanks, Rick. Let’s begin on Slide 11. MSA is an incurable neurodegenerative disorder associated with inappropriate deposits of alpha-synuclein in the brain. MSA patients experience a progressive loss of autonomic function, as well as challenges with standing, walking, speaking and swallowing. Many also experience depression and anxiety. According to a 2018-2019 U.K. survey of over 10,000 patients with neurological disorders, MSA ranks as having the second most severe impact on quality of life of any neurological disorder studied, ahead of disorders like progressive supranuclear palsy, Huntington’s disease and Parkinson’s disease, among others. Neurogenic orthostatic hypotension, which causes significant and unremitting drops in blood pressure upon standing, affects about four in five patients with MSA. Patients with symptoms of nOH may feel dizzy upon sitting or standing, can become unable to stand or walk for even short periods of time, feel pain associated with a lack of perfusion in their upper extremities, and face a higher risk of falls. Not surprisingly, a significant majority of patients with symptomatic nOH report that they have a reduced ability to perform daily activities, while many also expressing a loss of independence. As I’ll discuss on Slide 12, MSA patients with symptomatic nOH lack a safe, convenient and durable effective treatment option. While non-pharmacological therapies are available, they are often insufficient to control symptoms. About 30 years ago, the FDA approved a product called Midodrine on the basis of its ability to increase blood pressure. However, Midodrine is not indicated to improve symptoms of nOH, must be taken three times daily and carries a black box warning for its potential to lead to a marked elevation of supine blood pressure. Nearly 20 years later, the FDA approved a second drug called Droxidopa to treat dizziness in patients with nOH. Based on the still high unmet need for these patients, the FDA granted Droxidopa a conditional or accelerated approval. After initially having rejected the sponsor’s application and despite Droxidopa having failed two of the four Phase 3 studies included in the application. As with Midodrine, Droxidopa is dosed multiple times a day and carries a black box warning for supine hypertension. It has never demonstrated a durable effect on nOH symptoms beyond two weeks of treatment in a double blind study. And more recently, based on data reported on clinicaltrials.gov, it failed to demonstrate a benefit in the confirmatory study requested by the FDA known as RESTORE. Based on third party analysis of claims and prescription data, Droxidopa is still only prescribed to a small percentage of MSA patients with nOH. Let’s fast forward to today and it has been more than a decade since MSA patients with symptomatic nOH have been offered a novel treatment alternative. While we still have important work to do to confirm its clinical profile in the CYPRESS study, we anticipate that ampreloxetine will represent a significant advance for these individuals, given the benefits it has demonstrated to-date. Ampreloxetine’s durable impact on a broad range of nOH symptoms in MSA patients in Study 170, coupled with its safety and tolerability profile, and convenient once daily dosing, is expected to drive high levels of adherence. Moreover, as the first novel therapy in years, we are optimistic we will be able to build a case for a broad access and significant adoption in the population for which it is indicated, should ampreloxetine be approved. Now, shifting gears to the CYPRESS study on Slide 13, I’d like to share our approach and the progress that we are making. As many of you know, Theravance is directly managing study conduct for CYPRESS, rather than utilizing the traditional CRO model. By design, we are deeply involved in identifying sites with high standards for clinical conduct, investigators who understand the complexities of managing nOH and MSA, and patients who best fit the criteria of the CYPRESS study. We are informed by our experience in Studies 169 and 170, and have re-enlisted many of the same sites and KOLs involved in those studies. Beyond this, we have enriched our network through AI efforts that leverage claims information, the work of data scientists and our own expertise. This has allowed us to identify additional qualified sites in the United States. Finally, we are early adopters of telehealth and have incorporated options for patients and clinical personnel to participate in CYPRESS, even if factors limit patients’ ability to undergo evaluations in the clinic. We are pleased with the internal metrics we are monitoring thus far, which are consistent with our expectations and Study 170. While we don’t comment specifically on enrollment, we continue to make excellent progress activating sites, including many outside of the United States. Shifting now to the right-hand side of Slide 13, we have aligned with the FDA on the design of CYPRESS, including the use of the OHSA composite score, a six-item assessment of orthostatic hypertension symptom severity as the primary endpoint. When using patient-reported outcome measures such as OHSA, the FDA recommends anchoring these data in order to determine clinical meaningfulness. In November, at the AAS Annual Meeting, we presented data from our anchor-based analysis of Studies 169 and 170, which support the use of the OHSA composite score for MSA patients with nOH, as well as the threshold for which is considered a clinically meaningful change. Our analysis demonstrated that threshold improvements and worsening of approximately 1 point on the OHSA composite were considered clinically meaningful. This is important as it supports our CYPRESS study design and compares favorably to the 1.6-point benefit we saw on this measure in MSA patients in study 170. Finally, in order to minimize the time from CYPRESS completion to potential commercial availability, we have already completed much of the work required for our NDA submission and are in the process of altering the application. At this point, I’ll turn the call over to Rhonda to discuss YUPELRI.