Mike Weiss
Analyst · Alethia Young with Cantor Fitzgerald. Please proceed with your question
Great, thank you, Jenna, and thanks, everyone, for joining us today. During the first half of 2021, we hope that our long-term goals and vision for TG -- TG have really come into focus for investors. Our first phase of our multi-phase strategy now complete with the accelerated approval of the UKONIQ, the first and only dual inhibitor of PI3K-delta and CK1-epsilon for the treatment of relapsed or refractory marginal zone lymphoma and follicular lymphoma. We are very proud of these accelerated approvals for patients who have failed prior therapies and have limited treatment options. We estimate approximately 8,000 patients each year will be seeking treatment in our approved MZL and follicular indications, which we see as an excellent starting point for our commercial efforts. Building on the momentum from our UKONIQ launch, we have submitted and received a PDUFA target goal date of March 25, 2022 for a BLA application requesting approval of the combination of UKONIQ plus ublituximab, our novel glycoengineered anti-CD20 monoclonal antibody, the combination of which we refer to as U2, for the treatment of patients with chronic lymphocytic leukemia. We have also submitted a supplemental New Drug Application, sNDA for UKONIQ for the same indication and received the same PDUFA date for the sNDA. We are excited about the potential to bring our novel U2 combination to CLL patients, especially those who have failed or who are not good candidates for current standards of care. CLL is a significantly larger patient population than marginal zone and follicular. We currently estimate that approximately 30,000 to 40,000 patients will be seeking a new treatment each year in our proposed CLL indication. Not only is CLL multifold larger patient population than marginal zone and follicular, but we would expect the median duration of treatment to be longer in CLL as well. One other important factor to note is that we believe that 85% of our target prescribers for marginal and follicular lymphoma are the same prescribers that will be targeting -- that we will be targeting for chronic lymphocytic leukemia. So the significant efforts our team has made in building relationships for the marginal zone and follicular launch should translate nicely into our potential CLL launch. Next up in our multi-phased approach is the largest patient population we will be addressing, which is patients with relapsing forms of MS with ublituximab as a single agent. We are targeting a submission of a BLA for MS this quarter and hope to receive a target PDUFA date in the third quarter of next year. We believe our Phase 3 data supports an attractive treatment option for patients with relapsing forms of MS. Entering MS will also raise our commercial profile significantly as we expect to participate as one of only three anti-CD20 monoclonal antibodies and what is then projected to become a $10 billion to $15 billion per year market just for anti-CD20 molecule antibodies in the treatment of MS. But the core focus will be on the regulatory and then commercial execution of these first three opportunities, especially the larger market opportunities in CLL and MS. We will continue to seek to enhance our Hematology Oncology franchise by broadening the potential U2 label to new indications such as in marginal zone and follicular lymphoma and also into new combination uses of U2 in CLL, for example, in combination with venetoclax and our very own TG-1701. The ability to combine with standard of care agents in CLL, we hope will bring better outcomes to patients and should also broaden the potential penetration of U2 and CLL. On the MS side, we will seek to build on ublituximab potentially in other auto-inflammatory diseases, as well as seek to build additional programs in MS. With that, let me provide some recent highlights related to our initial commercial launch efforts with UKONIQ and our key regulatory efforts and development programs. First, let me just remind everyone and restate that in February, the FDA granted accelerated approval of UKONIQ for the treatment of adult patients with relapsed or refractory marginal zone lymphoma who have received at least one prior anti-CD20 based regimen, and for adult patients with relapsed or refractory follicular lymphoma who have received at least three prior lines of systemic therapy. This approval was based primarily on the results from the UNITY NHL trial, which were recently published in the Journal of Clinical Oncology. On the commercial side, UKONIQ became commercially available a few weeks following approval, and overall, I can say we are extremely pleased with the performance of the commercialization efforts to date. Launching during a global pandemic is no easy task, but under the circumstances, the team has done a really nice job in engaging target prescribers, both commercially and educationally under the leadership of our Chief Commercialization Officer, Adam Waldman. Adam will join us shortly to discuss some launch metrics and give some high-level qualitative assessments of the launch thus far. I don't want to steal his thunder, but again from where I sit, the launch is going well and believe is positioning us for future success with the potential approval of U2 for CLL early next year. Speaking of which, and as noted above, the BLA and sNDA for U2 in CLL have both been granted a PDUFA target goal date of March 25, 2022. For the MS Program, we were pleased in the second quarter to be able to present the positive results from our ULTIMATE I and II Phase 3 trials evaluating ublituximab in relapsing forms of MS at two major conferences, the American Academy of Neurology Annual Meeting and the European Academy of Neurology Annual Meeting. As mentioned during our last call, both studies met their primary endpoint with ublituximab treatment demonstrating a statistically significant reduction in annualized relapsed rate referred to as ARR. with ublituximab treatment resulting in historically low levels of ARR. We believe these results are highly encouraging and showcase the potential of ublituximab to provide an efficacious treatment option in a one-hour infusion every six months following the first dose. The expert feedback we have received thus far has been very positive, and our one-hour infusion, that's viewed as an important benefit for both physicians and especially their patients. These trials were conducted under special protocol assessment with the FDA and we are on track to complete a BLA submission for ublituximab to treat RMS this quarter. And briefly before I turn the call over to Adam, I want to provide a quick update to our combination and pipeline programs that we hope will be drivers of future growth. Starting with U2 plus venetoclax, which has moved forward now into Phase 3 for patients with CLL within the ULTRA-V trial. The Phase 2 portion of the ULTRA-V study completed enrollment earlier this year. You may recall that at last ASH in December, Dr. Paul Barr of the Wilmot Cancer Center in Rochester, New York presented preliminary results from his Phase 1 study of the U2 plus venetoclax combination, which included results from the first 27 patients in the study to complete the 12 cycles of fixed duration therapy. In those patients, there was 100% overall response rate and greater than 75% of the patients achieved undetectable MRD in the bone marrow. We view these results as highly encouraging and we look forward to presenting updated data from this Phase 1 trial later this year with approximately double the number of patients through 12 cycles of treatment. Next, let's discuss TG-1701, our investigational BTK inhibitor. We were pleased to present updated results from the Phase 1 trial of TG-1701 as a monotherapy and in combination with U2 last month during the summer Oncology Meetings, including ASCO, EHA and ICML. We were pleased to see that with additional patients treated with TG-1701, it continued to show encouraging clinical activity paired with what appears to be a tolerable safety profile. As I mentioned earlier, we view these triple therapy trials as a way to enhance the utility of U2 in the treatment of CLL. Further in the clinical pipeline are our CD19, CD47 bispecific antibody referred to as TG-1801 and our PD-L1 antibody referred to as TG-1501 or cosibelimab. Both are moving through early stages of testing with the possibility of data later this year or next. 2021 has been a very busy year for us as we've made significant progress on both the clinical and regulatory fronts and look forward to an impactful end of year and into 2022 as we strive to expand our commercialization efforts into CLL and MS. With that, I'm excited to turn the call over to our Chief Commercialization Officer, Adam Waldman to share some highlights from our early commercialization efforts. Adam?