Rick Graham
Analyst · Evercore ISI. Your line is now open
Thanks, Rick. It's exciting to be part of the quarterly update, especially, during such a transformational year for the company. While this is my first time presenting in the quarterly call, I've been part of the Theravance Biopharma team since October 2015 helping the company execute across research and translational science, development and commercial and have had the opportunity to lead the Ampreloxetine and Izencitinib project teams. Scientific excellence and focus on insight and innovation make Theravance Biopharma a special company. I believe it's because of this difference amongst others that we've been able to recruit top talent into our development organization over the last 18 months including Dr. Chin Lee, who recently joined our company as Vice President, Head of Clinical Science and Chief Medical Officer. Chin brings extensive drug development experience having previously been at Genentech Lilly and Abbott. His prior success in leading novel therapeutic programs across a variety of therapeutic areas will be valuable as we seek to advance our pipeline. Chin obtained his medical degree from the University of North Carolina at Chapel Hill and also has a Master of Public Health from Northwestern University. We're delighted to have Chin join the Theravance Biopharma team. Moving to the pipeline. Let's first discuss Nezulcitinib on slide 7, our nebulized lung-selective pan-JAK inhibitor. We first talked about Nezulcitinib during our R&D Day back in 2018 when we were studying it for the treatment and prevention of lung transplant rejection. Then last year in response to the pandemic, we deliberately chose to expand the clinical development program to begin studying Nezulcitinib as a potential therapy for acute hyperinflammation of the lung as a result of COVID-19. As the pandemic continues to surge in certain communities and parts of the world, treatments are needed for hospitalized patients. Moving to slide 8. Theravance Biopharma is developing Nezulcitinib to inhibit the pulmonary inflammatory cascade triggered in response to viral infection. As a JAK inhibitor, Nezulcitinib intervenes broadly to interrupt immune activation and restore balance. By nature of being an inhaled lung-selective treatment, Nezulcitinib is designed to deliver a therapeutic dose directly to the lung through nebulization with minimal exposure to the bloodstream and other organs. We believe that achieving this immune homeostasis is critical to preventing cytokine release syndrome that has been shown to cause acute lung injury, ventilator use and increased morbidity and mortality in COVID-19 patients. On slide 9, we highlight several important observations from our preclinical work with Nezulcitinib that suggests it may provide a unique therapeutic benefit through three distinct activities. Starting on the left panel, Nezulcitinib is a potent pan-JAK inhibitor. The middle panel shows that Nezulcitinib may predict -- protect against virus-induced cell death. And the far right panel demonstrates prevention of cell entry limiting virus dissemination in the lung by potent inhibition of the endogenous machinery for SARS-CoV-2 infection. Our goal is for Nezulcitinib to be the first inhaled treatment to broadly interrupt viral-induced activation and restore immune balance in the lung. We have now fully enrolled a 200-patient Phase 2 study in hospitalized COVID-19 patients and plan to release the top-line results later in the second quarter. Now let's move to Izencitinib, on slide 10, our oral gut-selective pan-JAK inhibitor to treat inflammatory bowel diseases, which is partnered with Janssen. On the next two slides I'd like to paint a picture for you that should really underscore the value of the organ-selective approach in IBD, the goal of which is to maximize therapeutic benefit to patients, while minimizing side effects. We do this by keeping two key design principles at the forefront; first, targeting validated disease biology; and second, designing Izencitinib's novel chemistry to unload active drug directly to the site of action in the gut. For IBD the biology, we are targeting is the JAK pathway. We posit that potent inhibition across all JAK isoforms that is JAK1, JAK2, JAK3 and Tyk2 within the GI tract is the key to maximizing the therapeutic benefit, while minimizing the risk of systemic immunosuppression. We believe a gut-selective JAK inhibitor like Izencitinib has a potential to be a game changer for the treatment of IBD and that it may become a once-daily oral treatment amenable to earlier lines of therapy as well as combination approaches. On slide 11, I'll highlight a few important data points from our preclinical work and support the gut selectivity of Izencitinib. As shown on the left panel, Izencitinib exhibited high margins of systemic safety in non-clinical studies relative to a systemic JAK inhibitor which has little to no safety margin. On the right panel, you'll note that systemic exposure of Izencitinib is low in patients with ulcerative colitis, which aligns with the high safety margins in animal studies. Notably, the oral bioavailability of Izencitinib is only 2%. That compared to other systemic JAK inhibitors, which was designed to distribute throughout the body and are therefore highly bioavailable. Importantly, gut selectivity confers low systemic exposure and offers a potential for an improved side effect profile compared to systemically distributed JAKs. On slide 12, I'll focus on optimization of benefit or efficacy with a gut-selective approach. On the left panel, we have demonstrated a lack of T-cell infiltration into the lamina propria. That's the site of action for JAK inhibition via NanoString technology in a mouse model of IBD. This result suggests that Izencitinib blocks inflammation and penetrates deep within the colonic tissue. As shown on the right panel, this deep tissue penetration at the site of action in the mouse model translated into clinical activity and the sensitive endpoints of rectal bleeding and endoscopic improvements after only four weeks of treatment in patients with ulcerative colitis. These data which were published in the Journal of Crohn's and Colitis provide confidence in the biologic activity of Izencitinib and its potential to treat IBD by maximizing drug concentration where it matters at the site of action in the GI tract. We expect the top line results from the Phase 2b ulcerative colitis study in the third quarter and top line results from the Phase 2 Crohn's study in late fourth quarter to early first quarter 2022. Now let's transition to Ampreloxetine on slide 13. Importantly, we're on track to report top line Phase 3 results in quarter three for Ampreloxetine, a once-daily Norepinephrine reuptake inhibitor to treat symptomatic neurogenic orthostatic hypotension. As slide 14 notes, we're working to break new ground as there's a significant unmet medical need for the treatment of symptomatic nOH. This condition profoundly impacts the quality of life that occurs in people suffering from Parkinson's disease, multiple systems atrophy and pure autonomic failure. Symptoms in these patients include dizziness or lightheadedness, fatigue, difficulty walking and weakness. This results in a high impact on quality of life, high risk of injury from falls and a significant burden to caregivers for these patients. This condition can lead to depression, social isolation, bone fractures and head trauma due to falls and overall morbidity. Slide 15 depicts how Ampreloxetine may target and correct the impaired basal constriction due to dysfunction of the autonomic nervous system in people that are living with symptomatic nOH. The left panel shows that Ampreloxetine inhibits the reuptake of endogenous Norepinephrine, which leads to an increase in levels at the axon terminal of patients that are still producing Norepinephrine, which results in an increase in blood pressure. With a distinct mechanism of action Ampreloxetine has the potential to be differentiated from current treatment options in the areas of durability of effect, once-daily dosing and a reduced risk of supine hypertension. It's our goal for Ampreloxetine to be the first treatment to demonstrate a sustained impact for patients managing the chronic and debilitating symptoms of nOH. We look forward to sharing results from the first of two pivotal studies in the third quarter. Next let's move to slide 16 and Frank will speak to the commercial team's progress with YUPELRI. Frank?