Mike Weiss
Analyst · SunTrust Robinson Humphrey. Please go ahead
Thank you, Sean and thanks to all of you for joining us this morning. I'm going to start this call by thanking our long-term shareholders for their continued support. Unlike many small companies that look to cut corners or take shortcuts, we have chosen a different path running large robust clinical trials, while pioneering novel -- novel combination therapy for B-cell malignancies. This kind of development takes time, but we are confident that all of our hard work and your patience will soon be rewarded. I can assure you your company has never been better positioned for success and your management team never more focused on creating long-term shareholder value by developing drug combinations that we believe will change patients' lives for the better. 2017 has already been an action-packed year with the achievement of many important milestones including, first and foremost delivering positive Phase 3 GENUINE data for the combination of ibrutinib plus our novel glycoengineered anti-CD20 monoclonal antibody with ublituximab also referred to as TG-1101. We received orphan-drug designation for our newly named U2 combination of ublituximab and umbralisib, which is also referred as TGR-1202, our next generation PI3K delta inhibitor for the treatment of CLL and diffuse large B-cell lymphoma. We also announced the results of the preplanned interim analysis by an independent Data Safety Monitoring Board or DSMB for the UNITY-CLL Phase III trial, which allowed us to close enrollment in both single-agent arms and also found that there are no safety concerns requiring modification of the study. We also had a busy summer, presenting at multiple large cancer and hematology meetings, including reporting positive data from the chemo-free triple combination of TG-1101, TGR-1202 and ibrutinib in both CLL and NHL. The overall response rates were 100% for CLL, Marginal Zone Lymphoma and Mantle Cell Lymphoma, all indications where ibrutinib is approved with substantially lower response rates. We also updated the all oral combination of TGR-1202 plus ibrutinib in patients with relapsed or refractory CLL and Mantle cell lymphoma showing the combination continuing to be well-tolerated and highly active. And finally, this summer, we presented data from the triple combination of TG-1101, TGR-1202 and bendamustine in patients with diffuse large B-cell and follicular lymphoma. We are very pleased with the high level of activity and tolerability profile demonstrated across both types of lymphomas. We've also been very busy building on our MS franchise and have moved this program rapidly towards Phase 3. So far this year, we've completed enrollment into our Phase 2 study of TG-1101 in patients with multiple sclerosis. We presented preliminary data from that Phase 2 study showing rapid and robust B-cell depletion utilizing a convenient one-hour infusion, which is significantly shorter than the competition. We were able to reach agreement with the FDA pursuing it as Special Protocol Assessment or SPA for our Phase 3 program, now named ULTIMATE I and ULTIMATE II of TG-1101 in relapsing forms of MS. Over the next month or so, before the end of the summer, we plan to launch the Phase 3 program in MS. In addition to these data presentations, we've been actively enrolling into our UNITY-CLL Phase III program this year, which has exceeded all of our expectations, putting us in the enviable position of being able to complete enrollment by the end of this year, which is almost six months earlier than our original guidance. All in all, I would say a very productive and action-packed year thus far. And if you thought that was exciting, just wait to see what we have planned to achieve over the next six to 12 months. Let's start with the GENUINE study and the potential BLA filing for accelerated approval. Recall GENUINE is a randomized Phase 3 trial comparing ibrutinib alone versus ibrutinib plus TG-1101 in the hard-to-treat patient population high-risk relapsed/refractory CLL. In the third quarter of last year, after consultation with the FDA, we amended the Phase 3 protocol to eliminate one of the two co-primary endpoints, leaving overall response as the sole primary endpoint following the amendment. We repowered the study solely for the overall response endpoint, which following the unblinding restudy showing almost 70% advantage in taking the combination, which was highly statistically significant. It is probably worth mentioning a point that I believe has confused some investors. At the moment, we amended the study, we and the FDA were well aware that we were no longer powered for the PFS endpoint. In statistical terms, that means the result of that outcome becomes less reliable unless weight can be given to the p-value, even if it is "statistically significant." The most common use for results from under-powered endpoints will be to help design and power a follow-up study, rarely would they be persuasive for FDA approval. We're quite pleased to see a trend for the very robust PFS advantage of the combination and believe given a highly statistically significant result for the primary endpoint, which was appropriately powered, the PFS benefit observed shows nice internal consistency of the data, and is certainly supportive of the belief that the overall response advantage is reasonably likely to lead to an increase in PFS, which is the regulatory hurdle required for accelerated approval. As noted previously, we plan to discuss with the FDA the possibility of filing GENUINE for accelerated approval in the fourth quarter. And if all goes well, we plan to file a BLA in the first half of next year. Assuming priority review, approval could come as early as the fourth quarter of 2018. We see the market opportunity for this combination in patients that have high-risk relapse/refractory CLL as somewhere between $250 million to $500 million, which is really a nice starting place for us as a company. That said, we continue to be most excited about our UNITY program and the blockbuster potential of the U2 regimen. So, let's focus on UNITY-CLL for a moment. The study is now a two-arm on study comparing U2 to obinutuzumab plus chlorambucil in frontline and previously treated CLL. This is a large randomized study and if successful, we would anticipate a very broad label for the treatment of CLL, setting up the U2 regimen as a flexible treatment option to use by doctors in any CLL setting. The robust rate of enrollment into the study continues to give us comfort of the significant role U2 will play in the care of patients with CLL. The timeline year is to complete enrollment by year end, announce topline overall response data next summer, and if positive, file for approval in fourth quarter of 2018 making approval possible in mid-2019. We will then continue to follow patients for a PFS outcome for a full approval. All in all, potential accelerated approval based on UNITY-CLL is only about six months behind a possible approval based on GENUINE. As inferred above, we think U2 has a significant market potential in CLL with peak sales potentially exceeding $1 billion. Next, let's review in more detail our UNITY-NHL program. There are now three parts to this study; first, the original part of the study, which is diffuse large B-cell cohort. From a timing perspective, we expect to hold the first interim analysis before the end of the summer, which could allow us to replace single-agent TGR-1202 with the triple therapy of U2 plus bendamustine. We would then expect to complete enrollment in this portion of the Phase 2b by the end of the first quarter next year. At that point, we can make a decision on filing for accelerated approval and the design of a Phase 3 trial. Next, we have the follicular cohort. We just recently started enrolling into this cohort and early enrollment trends are encouraging. We are not currently giving timelines, but expect to provide better guidance at ASH -- at our ASH Analyst Event in early December. By then, we should have enough enrollment experience and be better positioned to provide timelines. In this cohort, we are also anxiously watching the regulatory outcome for the pilaralisib and intravenously deliver dual PI3K alpha delta inhibitor, which recently filed for accelerated approval for follicular lymphoma. The PDUFA date should be later this year. If they are successful, which we really hope they will be, we should be well-positioned to be a fast follower of better regulatory strategy in the Marginal Zone Lymphoma cohort. Again enrollment has just begun, so we will defer guidance until ASH as well. As a point of reference, ibrutinib recently received accelerated approval for Marginal Zone Lymphoma with 63 patients and a 46% overall response rate, and is the only drug currently approved specifically for Marginal Zone Lymphoma. While it is an ultra-orphan indication, we would hope to be able to enroll at least 60 patients over the next 12 months or so. Once complete, and if overall response is comparable, we will be able to file the same regulatory strategy as used for the ibrutinib approval. As you can see, we have been hard at work at advancing our pipeline toward multiple approvals across CLL and NHL, and we're extremely pleased with the progress we've made thus far this year, in both our oncology and MS strategies, and look forward to an exciting remainder of the year. With that, let me turn the call over to the conference operator to begin the Q&A session, following which I will return to make some concluding remarks as well as reiterate our goals for the remainder of the year.