Michael S. Weiss
Analyst · ROTH Capital Partners. Please proceed with your question
Thank you, Sean, and thank you Jenna and thanks to all of you for joining us on this call today. The second quarter of 2015 has been an action packed few months with updated data from all of our key Phase 1 and 2 clinical trials having been presented at several major medical conferences, including five oral presentations and four poster sessions. The data presented continues to fuel our excitement and reinforces our belief that the safety and efficacy profiles of TG-1101 and TGR-1202 are well suited to form a backbone for multi-drug combinations. Accordingly we remained focused on commencing before year-end one or more Phase 3 registration trials for our proprietary combination of TG-1101 and TGR-1202, what we refer to as 1303. Additionally we are focused on continuing to broaden our clinical development program to include additional triple therapy combination trials, launching our first trial in autoimmune diseases as well as continuing to evaluate opportunities to enhance our product pipeline to enable further proprietary combinations. Well that as a quick overview of the quarter and our goals for the remainder of the year let me do a quick update on our ongoing GENUINE Phase 3 trial. During the quarter we were excited to announce that we now have over 120 sites open to enrollment into this Phase 3 clinical trial. Driving enrollment into our GENUINE trial is our top priority and to already have so many sites on board is an incredible accomplishment. From the design standpoint the GENUINE Phase 3 study is a randomized trial where patients will receive either 1101 in combination with ibrutinib or ibrutinib alone. The population for this study is patients with high risk chronic lymphocytic leukemia or CLL, while the primary endpoint of the study is progression free survival. Approximately the first few 100 patients of an expected total enrollment of approximately 330 patients will be assessed for overall response rate or ORR. If the ORR assessment is positive, as per our session protocol assessment or SPA, the company plans to use the overall response data as a basis for submission for accelerated approval for 1101. All patients will then be followed for PFS assessment, which is designed to support full approval. As mentioned in the past we hope to complete enrollment into the study and evaluate the overall response endpoint by the end of 2016. The study is supported by what we believe is very compelling data demonstrating the safety and activity of this regimen. Updated results from the Phase 2 study of the 1101 plus ibrutinib in patients with CLL were presented in an oral presentation at the International Conference on Malignant Lymphoma, held in Lugano, Switzerland. Highlights from that presentation include adverse events overall were manageable with limited grade 3, 4 events observed and only 7% of CLL patients discontinuing from study due to an adverse event, none believe to be related to 1101. 88% overall response observed in the 40 CLL patients evaluated for response, for the iwCLL Hallek 2008 criteria and with an additional four patients or 10% achieving no reductions without disease progression. Interestingly, in the 20 high-risk CLL patients evaluated for response the overall response rate was 95% with 25% of the patients exhibiting minimal residual disease and or confirmed or unconfirmed complete response. We call it disciplined study population for the GENUINE Phase 3 trial. We believe 1101 plus ibrutinib if approved will be a very attractive treatment option for patients with relapsed/refractory CLL, especially in those patients with high risk of [indiscernible] where chemotherapy has proven to have little effect. We believe the robust Phase 2 data is highly supportive of a successful outcome in the GENUINE Phase 3 study and then a successful outcome with support approval of the combination under our SPA. We look forward to presenting data from this trial before the end of next year. With that I’d like to present some highlights from the other data presented at a major medical conference in this quarter. For single agent 1202, some of the key findings were that 1202 continues to be well tolerated in the patients now on study for upwards of two plus years. Of the 16 evaluable CLL patients treated at the higher doses of single agent 1202, 88% or 14 of 16 patients achieved a novel PR with 63%, 10 of 16 patients achieving a partial response for the Hallek criteria. In patients with Non-Hodgkin's lymphoma or NHL, 83% of the patients with follicular lymphoma had a reduction of disease burden and 50%, three of six patients treated at higher doses of 1202 achieved partial response. Similar to other BCR antagonists late onset responses and evolving responses have been common especially in CLL and follicular lymphoma. Enrollment into our single agent TGR-1202 study continues and expansion cohorts for CLL, NHL and Hodgkin's lymphoma. And for 1303 some of the key findings presented this quarter were that the combination continued to be well tolerated in the 55 patients evaluable for safety with 18 patients or about a third of patients on the combination for six plus months. A significant dose response difference was seen between the lower doses and higher dose levels. At the higher doses tested 83% of the CLL-SOL patients achieved a partial response for the Hallek criteria, 64 of the patients with follicular and marginal zone lymphoma responded, including two complete responses, and 50% of the patients with diffused large B-cell and Richter's responded, including two complete responses. As seen with 1201 as a single agent responses to the combination have shown to improve overtime. Finally let me highlight the findings for our first chemo-free triple therapy trial of the combination of 1101, 1202 and ibrutinib, which was presented in an oral presentation at ASCO by Dr. Nathan Fowler of the MD Anderson Cancer Center. The key findings in that study were that the triple therapy combination was generally well tolerated and adverse events were manageable, with grade three and four events occurring in only 6% of the patients and no patients discontinued due to an adverse event. On the FXG [ph] side, all four patients with CLL-SOL achieved a response as per the Hallek criteria and three of four of the patients with heavily pretreated Follicular or Marginal zone responded to triple therapy including a follicular patient that was on ibrutinib and rituximab refractory remains on study over 9.5 months. All responses to triple therapy were rapid and profound. The 76% median reduction in disease bearing at the first efficacy assessment and with all patients who had subsequent efficacy assessments achieving a deeper response with a median 92% reduction. All of these studies continued to enroll and I look forward to providing updated data at future conferences. This wraps up just a brief summary and highlights of the substantial data presented in the second quarter, and I encourage anyone interested in the company to review the full data presentations which are available on our website where we have all posters and presentations available for download. Overall, we are very pleased, encouraged and excited by the activity and safety profile of our drugs, both in combination with each other as well in combination with ibrutinib. Given the safety, tolerability and broad section of activity across CLL and NHL, we believe our proprietary 1303 combination could represent an ideal backbone for future combination therapies and are looking forward to broadening our clinical program and explaining other triple therapies. As we've said from the beginning, as a company, our goal is to provide best-in-class multiple drug combination regimens. To achieve this goal we need a well-tolerated and efficacious backbone to build upon. We believe 1303 represents that. With that let me quickly remind everyone of our goals and objectives for 2015. First and fore most we will aggressively recruit into the GENUINE Phase III clinical trial of 1101 in combination with ibrutinib, which now has over 120 sites onboard with the goal of total completing enrollment and analyzing the overall response assessment in the second half of next year. Beyond the GENUINE Phase III trial we are targeting and launching additional combination Phase 3 trails including one or more for our proprietary 1303 combination of 1101 plus TGR-1202 across CLL and NHL. And building for the future, an additional registration trail down the road we planned to expand our overall development program with the launch of new triple combination trails. Notably we announced at ASCO that we're planning a new study with the University of Pennsylvania lead by Dr. Anthony Mato to explore the triple combination of 1101 plus 1202 plus a PD-1 inhibitor which we are excited to commence imminently. Longer term with an eye to our development of our proprietary triple and quad therapies and we will continue to push forward our preclinical pipelines, including the IRAK4 anti-PD-L1 and anti-GITR development process and opportunistically seek to identify drug candidates with complementary mechanisms of action. In the second half of the year we plan to expand into auto-immune diseases. This is an area of great interest to us but one area that we have spent little time discussing with investors. I believe later this year and into next year investors will become more aware of the role of B-cells in auto-immune diseases especially multiple sclerosis and that 1101 and possibly 1202 can play an important role in treating MS. And finally we look forward to providing another full data update on each of our key Phase 1 and 2 clinical trials at the American Society of Hematology Annual Conference held in Orland, Florida this coming December. Let me now turn the call back over to the conference operator to begin the Q&A session following which I will return to make some concluding remarks.