Mike Weiss
Analyst · Brean Capital. Please proceed with your questions
Thanks, Sean, and thanks to all of you for joining us on this call today. 2014 was a truly transformational year for our company. We made significant progress in the development of our lead compounds, TG-1101 and TGR-1202. And we’re excited to announce the company’s first Phase 3 clinical trial, the GENUINE trial, which is being conducted under Special Protocol Assessment for patients with high-risk chronic lymphocytic leukemia or high-risk CLL. Additionally, we’re able to expand our portfolio with complementary product candidates, as well as end the year with a strengthened balance sheet through strategic capital raises. Our vision has been clear since the start of the company, just three short years ago, to be the leader in developing best-in-class combination therapies for B-cell malignancies. And we’re proud of the progress we’ve made thus far toward that goal. Before I review the most recent clinical updates, I want to highlight some of the notable achievements over the last 12 months. We presented clinical updates from all ongoing studies in seven months at ASCO, EHA, and the Pan Pacific Lymphoma Conference. We converted our agreement for TGR-1202 from a joint venture structure to a full license agreement providing us greater control over development and commercialization. We completed a global license agreement with Ligand Pharmaceuticals for the development of IRAK-4 inhibitors. We commenced the first ever triple combination clinical study of TG-1101 plus TGR-1202 plus ibrutinib. We announced our first Phase 3 clinical trial of TG-1101 in combination with ibrutinib under Special Protocol Assessment. And finally, we presented key data at the 56th Annual American Society of Hematology meeting also referred to as ASH in December, which included an oral presentation of the data from our Phase 1/2 dose escalation study of TG-1101 in combination with TGR-1202, including a few patients on the triple therapy arm, which again included ibrutinib. We also had two poster presentations showing updated data from the Phase 2 trial of TG-1101 in combination with ibrutinib and updated data from the Phase 1 dose escalation trial of TGR-1202. And just last week, we were excited to announce that we entered a global collaboration to develop and commercialize anti-PD-L1 and anti-GITR antibody research programs in the field of hematologic malignancies. These antibodies were developed in the labs of Dr. Wayne Marasco of Dana-Farber Cancer Institute. In the addition to the above achievement, we also raised approximately $70 million over the course of 2014 and an additional, approximately, $20 million this year, which we feel positioned us well to execute the planned clinical programs and our overall business plan. Now I would like to review the data that we recently presented at ASH in December. I’ll start with the data on the combination of 1101 plus ibrutinib, which supported the launch of our first Phase 3 trial. I will then review data from our ongoing single-agent study of TGR-1202, which will then be followed by data on the proprietary combination of 1101 plus 1202. And lastly, on the triple therapy combination cohort, which includes all three 1101, 1202 and ibrutinib. Beginning with the Phase 2 data from the combination of TG-1101 and ibrutinib, the poster presentation included data from 54 patients with relapsed and/or refractory CLL or mantle cell lymphoma. The combination was well tolerated in the 54 patients evaluable for safety, with few Grade 3/4 reported. Adverse events were manageable, with only 7% of patients discontinued from the study due to adverse events. This included two events attributed to ibrutinib and two events deemed not related. With respect to efficacy of the 20 CLL patients with previously treated high-risk disease, 19 or 95% had a complete or partial response as per the iwCLL criteria. This is the patient population that will be studied in the company’s recently announced GENUINE Phase 3 clinical trial, which has been conducted pursuant to a Special Protocol Assessment with the FDA. As a reminder, the GENUINE Phase 3 trial is a randomized controlled clinical trial, with patients receiving either TG-1101 plus ibrutinib or ibrutinib alone. The trial will enroll approximately 330 patients, the first 200 patients included in the overall response endpoint. As per the SPA, if positive the company plans to file the overall response data from the trial to support accelerated approval for TG-1101. All patients will then be followed for progression free survival or PFS, which is designed to support full approval of TG-1101. We are very excited about the prospects of this study and look forward to completing enrollment and reporting on the overall response endpoint in the second half of 2016. Let me now discuss the data presented at ASH on TGR-1202 as a single-agent followed by the combination of 1101 and 1202, which we affectionately refer to in company as TG-1303. The TGR-1202 single-agent ASH update included data from 55 patients either relapsed or refractory hematological malignancies achieve a TGR-1202 at doses ranging from 15 milligrams to 1,800 milligrams once per day of the initial formulation and 200 milligrams to 1,200 milligrams once per day of the recently introduced micronized formulation which is assumed to exhibit approximately double the absorption of the initial formulation. From a safety standpoint, TGR-1202 is well tolerated with no observed dose related tends and adverse events, notably of the 55 patients evaluable for safety, no single agent drug-related liver toxicity or events of colitis were observed, with the median time on study of approximately six months and some patients on daily TGR-1202 for over 1.5 years. As you may be aware, these are adverse events associated with other PI3K-delta inhibitors, both FDA approved and in development. Of the 55 patients treated with TGR-1202 at the time of the presentation, only two patients less than 4% were withdrawn due to adverse events. Significant clinical activity was observed in patients with CLL treated at what we consider to be therapeutic dose levels. That is to say, doses greater than or equal to 800 milligrams of the initial formulation or any of the doses tested with the improved micronized formulation. In those patients with starting doses at therapeutic levels 13 of 14 evaluable patients or 93% exhibited greater than 50% reduction in nodal size, sometimes referred to as a nodal response and seven of 14 patients or 50% achieved a partial response per the iwCLL criteria. Lastly, at ASH, Doctor Matt Lunning of the University of Nebraska Medical Center presented data from the dose escalation study of TG-1101 in combination with TGR-1202. The combination was viewed to be well tolerated with few Grade 3/4 events reported outside neutropenia, which was seen in about one-third of the patients. With respect to efficacy, the data presented at ASH showed 100% of the evaluable CLL/SLL patients were 9/9 had nodal reductions with six of nine patients or 67% achieving an objective response per the iwCLL criteria and the remaining patients on study awaiting further assessment. Additionally, we saw a 43% response rate in three of seven patients with relapsed/refractory diffuse large B-cell Lymphoma, including two patients achieving an independently confirmed complete response. Consistent with the dose exposure relationship observed with single agent TGR-1202, all Lymphoma responses thus far in the study occurred at the highest doses of TGR-1202 tested at that time, which was 1,200 milligrams of the old formulation and 600 milligrams of the micronized formulation. We are encouraged by these early dose response data and look forward to presenting additional data from later cohorts this year, as we push the doses higher to what we believe will be optimal doses of TGR-1202 of 800 milligrams to 1,200 milligrams. Also included in the ASH presentation from Dr. Lunning were the first five patients who were treated with a triple combination of TG-1101, TGR-1202 and ibrutinib. Notably, this marked the first data presentation on the clinical combination of a PI3K delta inhibitor and the BTK inhibitor. Given the recent tolerability issues seen with novel combinations of this type, we proceeded cautiously with this combination in a three plus three dose escalation and up-to-date [ph] very pleased with the results, even in the difficult to treat population that has been enrolled. With respect to safety, a triple combination was well tolerated with no Grade 3 or 4 events observed with patients on the triple therapy, upward of four plus months. Of the five patients enrolled, three were evaluable for response with two patients too early to evaluate. Two of the first three evaluable patients responded to the triple therapy including a patient with Follicular Lymphoma. It was refractory to both ibrutinib and rituxan. That patient achieved a significant response within eight weeks of the initiation of therapy. Dose escalation continues in that arm of the study as well and we’re excited to see how that data evolved with higher doses of TGR-1202 still yet to be incorporated. It is important to note at this time we have approximately 50 patients who have been on TGR-1202 for greater than six months as a single agent or in combination studies and we’re yet to observe any drug-related colitis. Given the inter-patient dose escalation, most of these patients would have been exposed to doses greater than 800 milligrams of the original formulation for the majority of their timeline study and are currently at doses of greater than or equal to 800 milligrams of the micronized formulation. We are looking forward to building upon these encouraging data presentations. I’m presenting updates on all of our studies throughout 2015. We expect 2015 will be another transformational year for the company and has already gotten off to an exciting start with the recent additions of our anti-PD-L1 and anti-GITR programs. With that as a summary, with a very productive 2014, let me talk about our top priorities for 2015. First, we plan to aggressively recruit into the GENUINE Phase 3 clinical trial, TG-1101 in combination with ibrutinib. We’re planning to commence additional combination of Phase 3 clinical trials, particularly for the company's proprietary 1303 combination of 1101 plus 1202 in patients with CLL and NHL. We plan to launch new triple therapy combination trials in addition to the currently enrolling Phase 1/2 trial of TG-1101 plus TGR-1202 plus ibrutinib. We are targeting to enter the clinic for the company’s IRAK4 inhibitor program sometimes in the second half of the year. We are also targeting the commencement of clinical development for the treatment of autoimmune diseases with one or more of our drug candidates. And finally we plant to present updated data on each of our Phase 1 and Phase 2 clinical trials at major hematology/oncology conferences during 2015. As you can see, we have a very ambitious program set for 2015 that will continue to set us up for success in the coming years. With that, I’d like to turn the call back over to the conference operator to commence the Q&A session, following which I’ll return to provide some concluding remarks.