Brett Haumann
Analyst · Marc Frahm with Cowen
Thanks, Frank. Moving to Slide 7, I'll provide a brief update on our pipeline. Like the commercial team that Frank spoke about, the clinical development teams have adopted innovative approaches in response to the pandemic. As an example, for ampreloxetine, our once-daily norepinephrine reuptake inhibitor in development for the treatment of patients with symptomatic NOH, we worked with the US FDA to decentralize our ongoing trials to allow this fragile patient population to participate in the program without traveling to the clinic. The decentralized approach is now being rolled out across the Phase 3 program in the US and globally in an effort to overcome the challenges that patients face regarding travel, healthcare access and participation in clinical trials. We continue to see high rates of site activity, screening and randomization into the program, and we expect to report results from the 4-week SEQUOIA study in the third quarter of 2021. Turning to TD-1473, our gut-selective pan-JAK inhibitor for the treatment of inflammatory bowel disease in partnership with Janssen. We have two studies in progress. RHEA is a Phase 2b/3 study or 1473 in patients with moderately to severely active ulcerative colitis and DIONE is a Phase 2 study in patients with Crohn's disease. We expect the ulcerative colitis study and the Crohn's study to read out in the third quarter of 2021. Turning to Slide 8. TD-8236, our lung-selective inhaled pan-JAK inhibitor in development for the treatment of inflammatory lung diseases including steroid resistant asthma. We completed Part C of the study, enrolling the asthma patients that we believe will benefit most from 8236, namely patients with moderate to severe asthma who remain poorly controlled despite being treated with inhaled steroids. We deliberately enrolled patients with allergic or T2-dominant as well as non-allergic or non-T2-dominant asthma, knowing that patients with non T2-dominant disease did not respond to inhaled steroids or to current biological treatments. As reflected on Slide 9, we're pleased to report that 8236 performed well in Part C. Not only did we see a favorable safety and tolerability profile and very low levels of 8236 in the blood after dosing 1,500 micrograms by inhaler for 7 days. But significantly, we also demonstrated target engagements on key biomarkers of lung inflammation, including exhaled nitric oxide and inhibition of the phosphorylation of the JAK STAT pathway, as measured by pSTAT1 and pSTAT6 levels in inflammatory cells in the lung. The biomarker effect on pSTAT was consistent in patients with both T2-dominant and non-T2-dominant asthma. The full data set of Phase 1 from Part A, B and C for 8236 tells a positive story. In parallel with Part C, we conducted a Phase 2a Lung Allergen Challenge study. This is an experimental methodology study, carried out in patients with mild allergic or T2-dominant asthma, who are not on inhaled steroids as steroids would impact the results of the study. Whilst this is not the population of asthma patients we would ultimately seek to treat with 8236, the study offered a short duration, cost effective means of assessing the potential for 8236 to protect patients against an allergen that would provoke a worsening of their asthma. No JAK inhibitors have previously been tested in this clinical model, but our preclinical data suggested that 8236 should reduce the risk of worsening in a Lung Allergen Challenge study. Our hypothesis based on previous nitric oxide data in mild asthmatics was that we should see a dose-dependent effect with 150 micrograms showing no response, but 1,500 micrograms improving the late asthmatic response compared to placebo in patients who were dosed for 14 days prior to the allergen challenge. Moving to Slide 11. As expected, we did not see a response for the 150-microgram dose. However, we also did not see an impact on the late asthmatic response with the 1,500-microgram dose, as shown on the left panel, despite showing significant reductions in nitric oxide with the same dose in the same patients, as shown on the right panel. This was not at all in keeping with our expectations. The study design itself was robust, and the patients responded as expected to the allergen challenge. So we're confident this is not a failure of study design. It seems that we are not able to impede this allergic mechanism despite good pan-JAK potency and appropriate target engagement, as evidenced by the changes in FeNO shown in the right-hand panel. Moving to Slide 12. Whilst this is clearly an unexpected result, it's worth noting that we have seen consistent evidence of nitric oxide reduction with the 1,500-microgram dose across three separate groups of asthmatics. Including the moderate to severe asthmatics in Part C, who were already on a background of inhaled steroids. It's also important to note that there are other therapies that have failed to show an effect in a Lung Allergen Challenge study that went on to gain approval producing exacerbations in moderate to severe asthmatics, including the anti-IL5 therapy, mepolizumab, branded as NUCALA. With this in mind, we're continuing to evaluate all the data that's emerging from these studies, including gene expression data and cytokine data from Part C in moderate to severe asthmatics to help inform our conclusions and next steps for 8236. Moving to Slide 14. TD-0903, a lung-selective nebulized JAK inhibitor is currently in development for the treatment of hospitalized COVID-19 patients. 0903 has the potential to inhibit the cytokine storm associated with acute lung injury in an effort to reduce the number of patients who require admission to ICU for assisted ventilation and to reduce the risk of death. Turning to Slide 15. 0903 has been evaluated across a range of nebulized doses after single and multiple doses in a Phase 1 study in healthy volunteers. This allowed us to initiate a Phase 2 multiple-ascending dose study, evaluating the same range of nebulized doses in hospitalized patients with COVID 19, that is now completed dosing. Additionally, the data supported the filing and authorization of an IND in the US and Phase 2 clinical trial approvals in other countries around the world. As you see in the summary of Phase 2 data on Slide 16, 0903 was well tolerated and the PK profile was consistent with lung-selective exposure, reducing consistent, dose-dependent but very low levels of drug in the systemic circulation, well below those that are anticipated to have systemic effects. Having also completed the dose escalation portion of the Phase 2 study, we're now entering the second part of the study, testing one dose of 0903 added to standard of care against a control arm of usual standard of care in approximately 200 patients. We expect to report results in the Phase 2 study in the second quarter of 2021. We also see an opportunity to develop 0903 in additional settings where hyperinflammation of the lung is present, including acute lung injury from other sources and the treatment of acute and chronic lung allograft rejection. We look forward to updating you on our progress with 0903 in early 2021. I'll now turn the call over to Andrew for the financial update.