Raul Rodriguez
Analyst · Piper Jaffray
Thank you, Eldon. Great job. Now on Slide 14. As Eldon discussed, TAVALISSE has been well-received by patients and physicians here in the U.S. We believe that globally, TAVALISSE fostamatinib will have the same impact. Outside of the U.S., we are targeting an $800 million market, which currently includes TPO agents and RITUXAN. Like in the U.S., we have potential to be -- provide a differentiated product, which for the first time, allows doctors to address the underlying pathophysiology of ITP. On a recent call, we mentioned the twin goals we have for TAVALISSE fostamatinib in ITP and Global Markets. First is to make it available to as many patients as possible around the world. And second, to retain a significant part of the product's value. And we're making great progress on both goals. As you're probably aware, in mid-October, we received a positive trend vote from the European CHMP, which we believe positions us well for a positive opinion at the CHMP meeting in mid-November. This opinion advises the European Commission on product approval. And while there is no guarantee that a positive CHMP opinion will lead to an approval, we do think it's highly likely. This approval, as you may know, will add another $20 million in the form of a milestone from our partner. Our partner, Grifols, plans to make fostamatinib available to ITP patients in all the major European countries and to launch first in Germany. Germany is the most populous country in Europe with the largest market for ITP patients, a great place to start. Our partner in Japan, Kissei Pharmaceuticals, has initiated a phase -- a Japanese clinical trial in ITP as it works towards an approval of its NDA in Japan. For the Canadian and Israeli market, we recently established collaboration with a new partner, Medison Pharma. And we have now kicked off the approval process in Canada with a new drug submission, which we filed for fostamatinib in adult chronic ITP. On Slide 15, we overview the second indication for TAVALISSE, which is in warm autoimmune hemolytic anemia. This is a wide-open market, with a potential to be very significant. Our goal with TAVALISSE is to be the first approved therapy in this indication, since this is a patient population with no approved FDA-approved therapy. Today, TAVALISSE the furthest to advance in development, providing us with the opportunity to create a market by serving patients with warm AIHA. In addition, this indication is incredibly synergistic with our current ITP business. For the most part, AIHA patients are treated by the same hematologist and HemOncs that currently care for ITP patients. If approved, we already have established physician relationships and an audience that understands TAVALISSE's mechanism of action and how to manage its use. We'll be off and running quickly and efficiently. For our pivotal trial, SYK and patient enrollment is ramping and we remain on track for top line results in mid-2021. On Slide 16. We have an incredibly productive R&D team here at Rigel, the core of which has been at the company for many years and has discovered all the assets in development that you see here on this slide. For ourselves, we are focused on 3 development programs: Our SYK inhibitor, a program led by TAVALISSE fostamatinib; our IRAK1/4 inhibitor program; and our RIP1 inhibitor program, the latest molecule to enter the clinic. We want to reiterate our pipeline generation strategy, how we approach drug discovery, why our approach is advantaged and how it syncs with our downstream development and commercial focus. First, how we do this. The immune system is an incredibly adaptable and useful system to treat a broad range of diseases, both traditional immune diseases and diseases where the immune system can be deployed to provide a benefit. In Rigel, we explore the immune system for targets that play a role in a wide range of disease indications. As this slide shows, we have been incredibly successful in identifying targets, then discovering attractive molecules against these, then developing these molecules for ourselves and via partnerships and now commercializing our first of these. We are, more than almost any company, use cell-based assays to understand the role and benefit of modulating these immune targets. Cell-based assays more closely model human diseases and so provide a more viable small molecule drug candidates. We do cell-based assays here better than anybody. They are time consuming, they are complex but they yield advantaged molecules. That explains why we have succeeded in finding attractive molecules where others have not, such as with our SYK inhibitor, TAVALISSE. We're also able to use this discovery system to produce multiple drug candidates per program. It's very efficient. Having these advantaged molecules, against attractive immune targets, allows us tremendous latitude in how we develop them -- some for ourselves, some licensed to partners, and in the future, some jointly codeveloped. We can address large and small indications, a tremendous range of options, each tailored to that specific opportunity. In the next 2 slides, I'd like to reiterate some of the recent advances in our pipeline. At -- on our investor call, we discussed the results of the Phase Ib clinical trial of our IRAK1/4 program, the tolerability of PK data were very encouraging, but what's most important were the results of the LPS challenge study. In this portion of the trial, we demonstrated proof of mechanism with almost complete inhibition of inflammatory cytokine production in humans, not just assays -- in humans, with our lead molecule. The profound inhibition and timing of that inhibition were correlated with the circulating -- leading levels of our compound. We are currently assessing our options to move this program forward and have several avenues to explore. On Slide 18. We have a brief overview of our recently announced RIP1 inhibitor program. Again, if you hadn't had a chance to listen to our investor call, I would encourage you to do so as it will provide greater insights on this program and its importance. Why -- you may ask why is RIP1 important and why is it exciting? RIP1 is a fundamental immune target and an important mediator of chronic inflammation. RIP1 activation is a key driver of necroptosis, a form of cell death in which the cell ruptures and its contents spill out into the surrounding tissue which signal tissue damage and elicit a damaging inflammatory response. In diseases, this unrelenting necroptosis can drive and further disruptive inflammation. As you may know, RIP1 can be activated by inflammatory mediators, such as the TNS-alpha, which itself is a target of many successful pharmaceutical products. Inhibiting RIP1 and preventing this necroptosis and its disruptive inflammation opens the door to treat many potential indications, including diseases of the gut, the joints, the skin, the brain, including potentially Alzheimer's and ALS, and the hematopoietic system, including the bone marrow. Some of these diseases are not traditionally considered inflammatory diseases but are increasingly found to have an inflammatory basis. So RIP1 is a very exciting and novel approach to treating these diseases, and we have one of the leading programs in this area. We are pleased to have successfully entered the clinic with the systemic RIP1 inhibitor molecule, and next year plan to identify a candidate that crosses the blood-brain barrier to explore potential CNS indications. It's great to see our R&D efforts paying off and we will continue to provide updates on these opportunities. I would now like to turn the call over to Dean for a look at the financials. Dean?