Michael Weiss
Analyst · Raymond James. Please proceed with your question
Thank you, Sean and Jenna, and thanks, everyone, for joining us today. I thought I’d start this call by reminding everyone of our corporate mission. We started this company to develop the best possible combination treatments for patients with B-cell diseases. Multimodality therapy is necessary for best outcomes, but can be very expensive when drugs are being combined from different companies. So we undertook the challenging task of creating homegrown combinations. Over the last seven years, we’ve built a robust portfolio of B-cell target agents and have built an incredible engine for developing these novel medicines. We know we have set our sights high, but we also know our goals are within reach. We have five Phase 3 or registration-directed trials fully enrolled across the three major indications of interest: Chronic lymphocytic leukemia, non-Hodgkin’s lymphoma and MS. And this is just the beginning. We’ve also carefully and thoughtfully put together an early-stage pipeline that will power our next-generation proprietary triple and quad combinations, which will harness the immune system with our own PD-L1 inhibitor and our anti-CD47, anti-CD19 bispecific antibody. In combination with ublituximab, these three agents bring together the most important killing machinery our bodies have to offer, T cells, NK cells and macrophages. And the future is now as we should have these agents in double and/or triple combinations in 2019. Our goal is to attack B-cell malignancies from multiple angles with U2 as the backbone to provide the best possible outcome for patients, and we won’t stop trying novel combinations until we have succeeded in our mission. It’s a bold vision with lots of moving parts, and minor setback’s a part of the process. The key is to not let these minor hiccups derail the mission. Our commitment to our combinatorial approach to drug development is unwavering, and we are as excited and confident today in our success as we’ve ever been. With that, let’s highlight some of the notable achievements for 2018 so far. Early in the year, we saw results from our umbralisib Phase I study published in Lancet Oncology. We believe the results support our Phase 3 development, and we encourage everyone to read that paper. We also extended our portfolio of B-cell targeted drugs under development in licensing in novel first-in-class anti-CD47, anti-CD19 bispecific antibody now known as TG-1801. That follows our acquisition late last year of a novel BTK inhibitor referred to as TG-1701. We have also been building our team, adding key senior hires across commercial, regulatory, quality, CMC and project management, all with large pharma, large biotech experience, enhancing the robustness of our overall operations. We also presented the final Phase 2 results from ublituximab in multiple sclerosis at the ECTRIMS Annual Meeting, which continue to show complete elimination of T1 gad-enhancing lesions, reductions in T2 lesion volume and a remarkably low annualized relapse rate of 0.07. We also completed an enrollment into our ultimate MS Phase 3 clinical program. In the third quarter, we completed an enrollment into the current cohorts of the UNITY-NHL registration-directed clinical program. And most recently, we announced the acceptance of two abstracts for presentation at the American Society of Hematology Annual Meeting highlighting triple combination therapies with U2 as the backbone. We’ve made great progress this year and believe the next 12 to 18 months will be even more impactful as we deliver key pivotal data while we continue to build our novel next-gen combination therapies with our in-house product candidates. With that, let me briefly remind everyone of our current pivotal programs in the order of the expected release of pivotal data. First, let’s discuss UNITY-NHL. As you may recall, this is a multifaceted program with three primary cohorts: Follicular Lymphoma, Marginal Zone Lymphoma and Diffuse Large B-Cell Lymphoma. Within the three cohorts, we are planning to evaluate single-agent and combination therapies leading ideally to U2 as the backbone across various subtypes of Non-Hodgkin’s Lymphoma. Let me discuss each cohort briefly, starting with the relapsed/refractory follicular lymphoma. Here, we are evaluating single-agent umbralisib. This cohort is designed to mimic the regulatory path the number of other agents have followed successfully for accelerated approval in this patient population. We have enrolled approximately 100 patients, and we are targeting approximately a 40% to 50% overall response. In our Phase 1 study published in the Lancet Oncology, umbralisib does get the higher doses, including the those being used here in UNITY-NHL trial, demonstrated an overall response of 53%. The next cohort is relapsed/refractory marginal zone lymphoma. Here, again, we are treating patients with single-agent umbralisib. Marginal zone lymphoma is another indolent or slow-growing form of Non-Hodgkin’s Lymphoma, which is similar to follicular lymphoma and chronic lymphocytic leukemia. Few trials have specifically studied marginal zone lymphoma, and the only approved agent, ibrutinib, was approved in 2017 via accelerated approval. This cohort is designed to mimic the regulatory path of ibrutinib in these patients. We have enrolled approximately 70 patients, and here too, we are targeting approximately 40% to 50% overall response. The last cohort is evaluating patients with relapsed/refractory diffuse large B-cell lymphoma treated with the triple combination of U2 plus bendamustine. Diffuse large B-Cell is an aggressive and heterogenous form of NHL. This cohort is more exploratory as there’s not a clearly defined regulatory pathway. As mentioned, all three of these cohorts have now completed enrollment. We believe the number of patients as well as the patient profile enrolled in the follicular and marginal zone cohorts are consistent with prior accelerated approval filings. Next, let’s discuss our UNITY-CLL Phase 3 trial. As a reminder, UNITY-CLL is a randomized study of ublituximab in combination with umbralisib together referred to as U2 compared to an active control arm of obinutuzumab plus chlorambucil in patients with both treatment naïve and relapse or refractory chronic lymphocytic leukemia. This is a large global trial being conducted under Special Protocol Assessment with the FDA. The DSMB recently met, and while we were disappointed that they did not provide us an answer on overall response, we were pleased by the safety update from this trial. The DSMB reviewed safety information from over 600 patients, including approximately 180 treatment naïve CLL patients treated with umbralisib alone or in combination with ublituximab. After review of the data, the DSMB identified no safety concerns and recommend the trial continue without modification. This was reassuring, especially considering that no PI3K delta inhibitors have been approved in front line CLL, primarily due to toxicity concerns. Again, the primary endpoint for this trial is Progression Free Survival and is event-driven, which means we need to see certain number of events before we can call the study complete. Event in the Progression Free Survival study are disease progression or death. So since this is an event-driven trial, we can’t accurately predict exactly when the PFS readout will occur. That said, our current estimate is PFS can read out in the second half of 2019, and we remain optimistic about the prospects for successful PFS result. Other B-cell receptor antagonists have shown dramatic improvements in PFS in similarly designed studies, and we believe the umbralisib early clinical data supports our confidence in a positive PFS outcome. Next, let’s review our multiple sclerosis program. As mentioned at the start of this call, we’ve recently presented the final results from the Phase 2 trial of ublituximab in MS at the Annual ECTRIMS Conference last month. In our view, these final results confirm our belief that our Phase 2 data are every bit as good, if not better, than the Opera Phase 2 data at the same time point and as we believe the Phase 2 results are highly supportive of our ongoing Phase 3 program, known as the ULTIMATE MS Phase 3 trials. As a reminder, we are running two identical large global Phase 3 trials under Special Protocol Assessment evaluating ublituximab and relapsing forms of MS. Both of these studies have now completed enrollment. Currently, ocrelizumab is the only approved CD20 on the market for MS and in its fifth quarter after launch at approximately $500 million in sales in the U.S. alone. That is a current run rate of over $2 billion a year and growing. This is a major opportunity for us, and we look forward to potentially having our Phase 3 data available as early as mid-2020. Next, let me highlight a bit of the data we plan to present at ASH next month. In our oral presentation, we’ll present data on the triple combination of umbralisib, ublituximab and pembrolizumab in patients with CLL and Richter’s transformation, a form of CLL that has transformed into a very aggressive form. As you may know, we’re developing our own PD-L1 TG-1501 and soon plan to replace pembro with TG-1501 in that triple combination clinical trial. There are a few really exciting pivots of data included in that abstract. Of the four BTK refractory CLL patients, three of them responded to the triple therapy. Interestingly, two of those three responders achieved their response on U2 alone prior division of pembro. Also, there were four patients with Richter’s Transformation. Two of those four patients achieved complete responses. Both of those complete responders were ibrutinib refractory, with one of those patients also CAR-T refractory. With that, I’d like to turn the call over to the conference operator to begin the Q&A session, following which, I will return and provide some concluding remarks as well as review our remaining milestones and outlook for the remainder of 2018.