Michael Weiss
Analyst · Ladenburg Allen
Great. Thanks, Sean, and thank you, Jenna, and thanks, everyone, for joining us this morning. Seeing as we were just on a call a few weeks ago, we're going to try to keep this one relatively short. I thought I'd start out by focusing on the ASH abstracts that we released last week. I'll provide a little bit of color and context around those presentations, and then touch on some of this year's major accomplishments and conclude, after the Q&A with some upcoming goals and catalysts for the company. So to start, let's talk about the 2 presentations in ASH that we announced last week. First is an oral presentation on the triple combination of umbralisib, our highly selective PI3K delta and CK1 Epsilon inhibitor; and ublituximab, our glycoengineered anti-CD20 monoclonal antibody, which together, we refer to as U2, so U2 plus venetoclax, in patients with relapsed or refractory chronic lymphocytic leukemia, also CLL. This is a Phase I/II study was designed with the intent to assess whether U2 plus venetoclax could potentially drive deep and durable responses in a fixed time frame of treatment. For example, in the study, 12 months and then stop treatment if you achieve MRD-negative in the bone marrow. A few exciting and tidbits in this abstract included that U2 alone was highly active. With an overall response rate of 85%, 11 of 13 patients after 3 cycles of therapy, and this is, again, prior to the introduction of Natcat. We start with a U2 alone induction. And these are patients who are heavily pretreated, relapsed/refractory CLL patients, including a number of them that were refractory to ibrutinib. Following cycle 3, venetoclax was introduced to the study and all 9 patients that had at least 7 cycles of follow-up at the time of the ASH abstract submission had a complete or partial response to the 3 drug combination. As importantly, of the 5 patients with 12 cycles of follow-up at the time of the ASH abstract submission, all of them had achieved undetectable minimal residual disease in the peripheral blood and 4 or 5 of those patients had achieved undetectable MRD in the bone marrow, and were able to stop treatment at the end of cycle 12. While these are small patient numbers, these results appear to represent a substantial improvement over existing therapy. We look forward to the presentation with additional data from this study at ASH, including additional patients to the longer and patients through longer follow. To confirm these dramatic effects, these data will be presented at ASH by Dr. Paul Bar, Director of the Clinical Trial Center at Wilmot Cancer Institute at the University of Rochester. Additionally, we have already begun enrolling in what we hope will be a registration-directed Phase II single-arm study called the Ultra V study, which looks at the combination of U2 plus venetoclax in both relapsed/refractory and treatment naive CLL patients. This study is being led by Dr. Richard Furman. He's the Director of the CLO Research Center at Wild Cornell Medicine here in New York City. The second abstract accepted for a poster presentation is the Phase I study of TG 1,701, our novel BTK inhibitor as a sale agent and in combination with U2 for patients with a variety of relapsed fractory B-cell malignancies. As you may recall, we have previously studied the triple combination of U2 plus ibrutinib, where we demonstrated a 100% response rate in patients with CLL and marginal zone lymphoma, with a well-tolerated safety profile. The promising results seen in the U2 Casarino study, which was published in Lancet hematology motivated us to move our proprietary once-daily BTK inhibitor into triple combination studies as rapidly as possible. The ASH abstract includes the first ever clinical data on our BTK inhibitor, TG-1701 and includes data from the single agent cohort as well as the triple combination cohort with U2. Responses haven't seen at all dose levels. And all patients treated in the triple combination at the lowest dose have achieved a response at the first assessment, including a complete response in a patient of follicular lymphoma and 2 partial responses, one in a patient with follicular lymphoma and one in a patient with marginal zone lymphoma. This study is particularly important to us at TG, as it represents a significant step forward in our mission to develop novel combination therapies to those patients in need. This is the first triple combination study conducted for all the agents or proprietary TG drug candidates. Needless to say, we are excited for the ASH Meeting in Orlando next month. Both of these trials will come into better focus when we have the UNITY-CLL pivotal data, but please understand that we're conducting today the studies that will hopefully enable a strategy that puts U2 in a position to be used both as you go alone and also on top of BTKs and venetoclax to optimize those treatments. Neither BTKS nor venetoclax alone are the solution. Our belief is that U2 makes those treatments better and should enhance the number of patients to get long-term durable remissions, so patients can stock therapy. That is the goal of all this work. With that, it's probably a good time to transition to the UNITY-cLL study as much of the excitement of these 2 abstracts hinges on a positive CLL outcome. As a reminder, the UNITY-cLL trial is a randomized Phase III study of U2 compared to an active control arm of a combination of a chemotherapy and an anti-CD20 monoclonal antibody in patients with both treatment naive as well as relapsed/refractory chronic lymphocytic leukemia. The primary endpoint for this trial is progression-free survival. As we have said previously, we hope to have results from this study around year-end or into the first quarter of next year. However, as this is an event-driven trial, it is challenging to precisely predict the timing of completion. We remain extremely optimistic about the study and the prospects for a successful PFS outcome. Before I transition to a quick highlight reel of what we've accomplished this year so far, let me also remind everyone that in addition to the UNITY-CLL Phase III data, we have another large Phase III program reading out in 2020. That, of course, is our ultimate one and two Phase III trials in relapsing forms of multiple sclerosis. These are two independent Phase III trials comparing ublituximab to oral teriflunomide. The primary endpoint for each study is annualized relapse rate, following 96 weeks of treatment and are designed to support submission for full approval of ublituximab in relapsing forms of MS. These trials are being conducted under special protocol assessment with the FDA and have been fully enrolled for over a year now. We are targeting top line data from these trials in the middle to second half of next year. For sure, exciting times ahead for TG. But let's not forget all the progress we've made already this year. Let me finish my prepared remarks with a little recap with the major achievements for the first three quarters of 2019. Earlier in the year, we announced that our registration-directed UNITY-NHL studies, marginal Zone lymphoma cohort met its primary endpoint, and we received a breakthrough designation from the FDA for this indication. Soon thereafter, we presented preliminary positive data at a few important medical conferences, demonstrating an approximate 50% overall response rate and approximately 20% complete response rate for embolism as a monotherapy with what appears to be a well-tolerated safety profile. Later, we announced that we met with the FDA to discuss a module one lymphoma filing. And after such meeting, we announced our intention to target the commencement of a rolling NDA submission around year-end. Then we announced that almost - with almost 4 years of follow-up, our GENUINE study demonstrated that ublituximab, in combination with ibrutinib, improved progression-free survival over ibrutinib monotherapy in patients with high-risk relapsed refractory CLL. Despite recent approvals, this patient population remains a high unmet medical need, compared to share of the data with the FDA and present this data at a future medical conference. And finally, just two short weeks ago, we announced that the follicular lymphoma cohort from our UNITY-NHL study also met its primary endpoint of overall response rate. The follicular lymphoma cohort was designed to replicate the successful accelerated approval our pathway is taken by other PI3K deltas. Overall response for the approved PI3 K Delta has ranged from 42% to 59%, and our target range for success was 40% to 50%. We plan to discuss these results with the FDA with the goal of initiating an accelerated approval filing for follicular lymphoma in 2020. We 2019 has been an exciting year for us, and we plan to keep the momentum going into 2020, which we believe will be a transformational year for our company with 2 substantial pivotal data readouts for our UNITY-CLL and ultimate MS. Phase II trials and our transition into a commercial organization with the potential approval of umbralisib for marginal zone lymphoma before year-end. 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 to make some concluding remarks.