Gilead Raday
Analyst · Scott Henry from ROTH Capital
Thank you, Guy. I am pleased to present RedHill’s R&D progress highlights. COVID-19 continues to be a major R&D focus for us in 2021. RedHill is at the forefront of the efforts to develop orally available therapeutics for COVID-19 with two promising and rapidly advancing Phase 2/3 stage therapeutic candidates. Opaganib and upamostat are both orally administered novel small molecules with potent antiviral activity. Being orally available provides them an important advantage in terms of ease and simplicity of distribution and administration. Both compounds exert their antiviral activity through targeting over human host cell factor. So they act independently of the mutations to the virus by protein. As such, they are expected to be active against the emerging variants, including against variants which may be resistant to certain direct acting antibodies. Looking at the overall COVID-19 therapeutics field, while vaccine deployment establishes some pockets that seem to be nearing herd immunity, the worldwide infection rates continue to increase and there remains an urgent unmet need for a highly effective, safe and easy-to-use COVID-19 therapy. The clinical and operational challenges of developing therapeutic for COVID-19 have established a steep pyramid with very few remaining promising and advanced oral therapy candidates at the top. With our two promising and differentiated oral therapy candidates, RedHill is uniquely positioned to potentially benefit COVID-19 patients worldwide. Opaganib is our first advanced oral therapy candidate for COVID-19. It targets SK2, a human intracellular enzyme with multiple functions. Opaganib acts dually, both as a broad spectrum antiviral and also as an anti-inflammatory. Importantly, by targeting a human host cell factor, opaganib is expected to uphold its antiviral activity against the continually emerging variants, which raised concern of resistance to direct acting antibodies and possibly also to vaccine. As an orally administered pill, opaganib has clear advantages in terms of its distribution and administration. And due to its unique dual mechanism of action, it could potentially treat a broad range of COVID-19 patients from mild outpatients to severe hospitalized patients. Given the broad potential utilization of opaganib, we have embarked on setting up a robust supply chain for it scaled up manufacturing. We are now at the final stages of enrolling patients into our global study in 464 patients, with last patient expected to be enrolled in a few days. Once that is reached, last patient out and the ensuing topline results are anticipated to follow shortly thereafter. To recap, opaganib has already successfully obtained promising milestones. Opaganib successfully completed a randomized controlled Phase 2 study in the U.S. in 40 patients, demonstrating positive, safety and efficacy signals. The ongoing global Phase 2/3 study has already passed four independent safety monitoring reviews of unblinded data, covering the first 255 subjects and also an unblinded futility analysis from the first 135 patients enrolled. We also have positive compassionate use experience with opaganib from Israel, Switzerland and recently also cleared in Belgium. This resulted in a publication in a peer reviewed journal, reporting that compassionate use with opaganib in severe COVID-19 patients demonstrated a substantial benefits as compared to matched case controls from the same hospital, including improvements in inflammatory and disease markers. Furthermore, opaganib compared favorably with remdesivir in inhibiting the replication of SARS-CoV-2 in human lung bronchial tissue acid showing complete inhibition of viral replication. In addition, extensive preclinical data supports the broad antiviral properties of opaganib and potent anti-inflammatory activity, and clinical safety data has by now been obtained in hundreds of patients, indicating good safety and tolerability of opaganib. As a reminder, opaganib shows encouraging results from this successfully completed Phase 2 study, randomized double-blind placebo-controlled in hospitalized patients with severe COVID-19 patients. These are patients who required supplemental oxygen support at baseline, corresponding to Levels 4 and 5 on the WHO ordinal scale of disease severity. Patients were randomized to receive either opaganib or placebo. Opaganib was given 500 milligrams twice a day, on top of standard-of-care therapy for 14 days. In terms of the standard-of-care used in the study, approximately 80% of subjects received dexamethasone and 50% received remdesivir, the majority of patients receiving both. With respect to efficacy signals, opaganib show the benefit in reducing the need for supplemental oxygen. Specifically, a greater proportion of patients treated with opaganib no longer required supplemental oxygen by day 14. Opaganib also showed improvements in time to discharge from hospital. And importantly, these observed benefits were consistent where the patients were treated with remdesivir or corticosteroids or both as the underlying standard-of-care. In terms of safety, opaganib was overall safe and well tolerated. For an update on the progress of the ongoing global Phase 2/3 COVID-19 study with opaganib. This randomized double-blind placebo-controlled on top of standard-of-care study in hospitalized patients with severe COVID-19 is nearing the completion of enrollment of its 464 subjects. With almost 100% of subjects already enrolled, we expect the last patient to be randomized in the coming days. Last patient out is expected to take place at the end of the follow-up period of six weeks and topline results should be expected soon thereafter. The primary endpoint of the study is the proportion of patients’ breathing room air without oxygen support by day 14. The study will also capture additional standard important outcome measures in the follow-up period of up to six weeks, such as the incidence of incubation and mortality. The study has been approved in multiple countries including Italy, U.K., Poland, Russia, Israel, Mexico, Colombia, Peru, Brazil and was recently also opened in the U.S. Four independent DSMB recommendations to continue this study were already provided following unblinded safety and futility reviews. Furthermore, an evaluation of the blinded -- blended incubation and mortality rates today is encouraging as compared to what might be expected in the treated patient population based on reported rates of mortality from large platform studies, such as recovery and other studies in similar patient population. In terms of regulatory development, FDA has indicated that additional study to support application in the U.S. will be needed. Evaluations and discussions continue with the FDA, EMA and regulators in other countries as to the path to the applications in the various respective territories. It should be noted that the COVID-19 regulatory landscape has evolved over the last year and continues to do so rapidly. Initially in the early stages of the pandemic, FDA and other regulatory agencies approved emergency use based on very limited data due to the absence of approved therapies or vaccinations and coupled with widespread serious disease. Today, with the advent of vaccinations and with several emergency use approved therapies, FDA requirements have become stricter and the hurdles for approval have risen accordingly. Our expectation for discussions with senior expert consultants is that the strength of clinical safety and efficacy data will be key to potential regulatory application. RHB-107 also called upamostat is our second Phase 2/3 COVID-19 program and it is currently targeting COVID-19 in the outpatient setting, the largest category of COVID patients. It is a novel, orally administered, serine protease inhibitor with potent anti-SARS-CoV-2 activity as demonstrated in an in vitro model of human bronchial tissue. Upamostat targets a human cell factor involved in enabling viral entry into the cells. So it too is expected to uphold its activity against the continually emerging variants. Upamostat is also a simple to distribute and administered already available pill, which is particularly well suited for treating the mild to moderate outpatients. We have initiated a Phase 3 study of upamostat in COVID-19 outpatients in the U.S., and are in the process of expanding it globally to territories in which the infection is widespread and access to vaccination is limited. The study is targeting 310 patients to be enrolled in a two part randomized double-blind placebo-controlled Phase 2/3 study. The endpoint of the study includes time to sustain recovery and the incidence of hospitalization and disease progression. Patients will also be tested for their specific viral strain. Our non-COVID-19 pipeline fronts, we have initiated a Phase 3 study for treating first-line, nontuberculous micro bacterial infection with RHB-204. Nontuberculous mycobacterial infection, or NTM in short, is a rare disease with chronic debilitating manifestations and with no FDA-approved first-line therapy. RHB-204 is a promising potential first-line, stand-alone oral therapy. It’s all in one combination capsule is design to ensure that the proper combination of antibiotics is administered with each dose intended to safely and effectively treat NTM and maintain microlight sensitivity. RHB-204 has been granted orphan drug designation, qualified infectious disease product designation and fast track designation. With these designations, it is eligible for priority review of the NDA and for 12 years of market exclusivity. The randomized, placebo-controlled Phase 3 study is planned to enroll 125 subjects at up to 40 sites across the U.S. And as is the case across the industry in non-COVID-related clinical studies, we are experiencing screening slowdown due to the constraints imposed by the pandemic on sites, physicians and patients. We are addressing this and are planning to expand the study to additional territories outside the U.S. and we expect enrollment to pick up over time as the impacts of COVID-19 subside. The key study endpoints of sputum culture conversion and patient reported clinical outcomes will be evaluated at month six with ensuing longer term follow up, including the post-treatment maintenance of conversion. I will now turn it to Rob, our Senior VP of Sales and Marketing to update on our commercial progress.