Eric Hedrick
Analyst · Cowen
Okay, thanks Dr. Wu. And good morning everyone on the call. On Slide 24, the statistics are robust product portfolio in pipeline, which includes three marketed products in China, three late stage drug candidates and six early stage programs, which are evenly split between internally developed and collaborative programs. We currently have more than 50 ongoing or planned clinical trials and with respect to our two lead programs, the BTK inhibitor zanubrutinib and the PD-1 tislelizumab. Both programs are broad in nature addressing multiple indications contemporaneously with the intent to support multiple labeled indications across the globe, including China, U.S. and Europe. Turning specifically to zanubrutinib on Slide 25. We are running a broad registration enabling program across various T-cell malignancies, which includes chronic lymphocytic leukemia, Mantle cell lymphoma, Waldenstrom macroglobulinemia, marginal zone lymphoma and follicular lymphoma. Noting that follicular lymphoma indication would be unique amongst BTK inhibitors. We have filed an application in China based on pivotal data in CLL and MCL that have been granted priority review by the CDE. In the U.S. we've been granted Fast Track Designation for Waldenstrom and breakthrough designation in mantle cell lymphoma. In the next few slides, I will review in greater detail, the ongoing trials which are intended to support global filings in multiple indications for zanubrutinib. Moving to Slide 26. Our lead indication globally is Waldenstrom macroglobulinemia where we are conducting a head-to-head Phase 3 trial of zanubrutinib versus ibrutinib, the currently approved BTK inhibitor in this indication. This trial completed enrollment in July 2018 and we are anticipating a data readout in the second half of this year. As shown here, the trial randomized patients with MYD88 mutation, which defines about 90% of Waldenstrom's patients in the one-to-one ratio to treatment with either zanubrutinib or ibrutinib. The study is designed to detect superiority for zanubrutinib with respect to response quality - in this case defined as the proportion of patients achieving at least 90% reduction in disease burden. Patients lacking the typical MYD88 mutation who have traditionally not been responsive to ibrutinib received zanubrutinib on a third nonrandomized arm. It should be noted that the data from this nonrandomized arm has been submitted to a major conference this year for presentation. Moving to CLL on Slide 27. Two Phase 3 trials intended to support approval globally are currently being conducted. The initial registration trial is the comparison to zanubrutinib to the BR regimen in patients with previously untreated disease. This is the PFS primary endpoint trial in which patients who do not harbor a 17p deletion, which is a marker resistant to traditional chemo immunotherapy randomized to receive either zanubrutinib or BR. There is a separate nonrandomized arm looking at patients with the 17p deletion. The trial as the whole should complete enrollment this year. One other note about this design, a similar Phase 3 study comparing the first generation BTK inhibitor ibrutinib to BR was presented at last year's ASH meeting, showing a highly significant PFS advantage for the BTK inhibitor to the patient. This certainly raises our confidence and the outcome of our Phase 3 trial. On this slide, you also see a second Phase 3 trial, this in patients with relapsed or refractory CLL. This is an ongoing study and we plan to enroll 400 patients. The primary endpoint to this trial is overall response rate defined as complete plus partial response. And the study is powered to detect superiority for zanubrutinib in a hierarchical analysis plan, which will first test non-inferiority. On Slide 28, we would like to provide an update today that the non-randomized deletion 17p arm in the first length study is completed enrollment with 110 patients. Importantly, this is the largest cohort of treatment i.e. 17p deleted CLL patients have been prospectively studied. And we should be able to analyze the response data from the study on this year. On Slide 29, we are also investigating zanubrutinib, in combination with obinutuzumab in relapsed/refractory follicular lymphoma based on Phase 1b data was presented in 2017, which showed high rates of overall in complete response with the combination. As noted previously, no BTK inhibitor has been approved to date in this indication. Slide 30, summarizes the effects of zanubrutinib. Zanubrutinib that may ultimately be able to address specific limitations that presently exist with BTK inhibitor therapy. We believe that improvement and continuous target occupancy may ultimately translate the differences in response quality, and this is being tested in the two head-to-head Phase 3 trials, as I mentioned earlier. However, in practice, particularly in studying the CLL, toxicity and tolerability issues are for more commonly treatment-limiting most so than limitations in efficacy. In this regard, we've been incurred by the low rates of toxicity related treatment discontinuation and cumulative off-target events, such as myalgia, arthralgia, hypertension that have been observed to date in zanubrutinib clinical trial. Additionally, we believe that comparatively favorable drug-drug interaction profile for zanubrutini, particularly in lack of CYP3A liability will translate well into practice setting such as CLL, [will come with the] [ph] disease and requirement for contaminant medications can be challenging with ibrutinib. On Slide 31, we move onto our next significant near-term development opportunity for tislelizumab or PD-1 antibody. Tislelizumab is Fc engineered antibody that does not bind Fc receptor on macrophages and thereby potentially macrophage driven TF factor self-suppression. The broad registration trials program for tislelizumab is summarized here. And as you can see it focuses largely on opportunities in most prevalent cancers in Asian patients, including non-small cell lung cancer, hepatocellular cancer, esophageal cancer and gastric cancer. The global registration for the program is being conducted and collaboration with Celgene. BeiGene is presently sponsoring and operating the vast majority of the global clinical trials and all of the China focused registration trials. Tislelizumab is also a backbone with an expanding roster of combination development efforts, listed here on the combinations that internally developed agents, now we're mentioned shortly of the evolving combination development program was partnered that such as zanubrutinib. Slide 32 depicts the ongoing registration trials for tislelizumab, including these trials intended to support approval in multiple regions and there is focused on enabling registration in China. We're investigating tislelizumab in registrational trials in both solid tumor indications and hematologic malignancies. Notably, the studies intended to support global approval are required a significant proposition of patients from China and representing BeiGene focused on conducting single trials with a global in the truest sense of word. Most of the trials in the program were initiated in late 2017 to 2018, and this includes programs in the hepatocellular cancer both in the relapse of first-line setting and gastric cancer in first-line setting and the esophageal cancer squamous in the second and first line setting, and then non-small cell lung cancer in the first and second line settings. In the Phase 3 program in patients with locally advanced disease in combination with radiation therapy. Listed at the bottom where the ongoing studies commenced its support registration predominately in China. One of these studies a pivotal trial in patient for classical Hodgkin's diseases has been filed with CDE in this currently under review. The second pivotal trial in urothelial bladder cancer has completed enrollment with the plans filed with the CDE in 2019. Two Phase III non-small cell lung cancer trials are also actively enrolling. On Slide 33, we are announcing here today that the Phase 2 study in second or later line HCC has completed enrollment of approximately 250 patients after being initiated in April of 2018. Moving to Slide 34 for late development portfolio also includes the PARP inhibitor pamiparib. This is currently being evaluated in two registrational trials in China. One in later line, RAS-mutated ovarian cancer and one is the maintenance agent for patient with second-line platinum-sensitive ovarian cancer. The global program is focused on use in the maintenance setting gastric cancer, it is responsive to platinum-based regimen and exploratory trials in the setting of glioblastoma, where we believe the CNS [quality] [ph] is something that could be important. Lastly, Slide 35 summarizes our expanding early development pipeline, including sitravatinib, a multi-kinase inhibitor, which we can licensed from Mirati for development and commercial rights in Asia, Australia and New Zealand last year. We are evaluating sitravatinib in combination with our PD-1 inhibitor tislelizumab in non-small cell lung cancer, renal cell carcinoma, ovarian cancer, hepatocellular cancer and gastric cancer in Phase 1b and Phase 2 studies. Combination studies of lifirafenib, a Raf Dimer inhibitor with the MEK inhibitor with SpringWorks and solid tumors, and sitravatinib combination with PI3K delta inhibitor for MEI Pharma B-cell malignancies, we are also being initiated. We also have PD-L1 antibody, BGB-A333 and TIM-3 antibody, BGB-A425, in early clinical development in the single agent and in combination with tislelizumab. And with that, I'll turn the call over to Howard to review the financial results and the upcoming event. Howard?