Ali Fattaey
Analyst · RBC Capital Markets. Your line is now open
Thank you, Jim and morning everyone, and thank you for joining us today. It is my pleasure to provide you an update on Curis, and our progress in developing multiple innovative drugs for patients with cancer, including our 2 most advanced programs; CA170 and CUDC-907. First, I would like to discuss the CA170, which is the first orally administered small molecule checkpoint antagonist that was discovered in our collaboration with Aurigene and targets the PD-1 Ligands and VISTA immune checkpoints, and is now in clinical development. We recently presented pre-clinical findings from the CA170 program at the AACR Tumor Immunology and Immunotherapy conference last month, describing how CA170 treatment in tumor bearing mice resulted in increased numbers of activated T-cells and increased expression of T-cell markers of activation when measured in mouse blood samples, in tumor draining lymph nodes, and in excised tumor samples. As we have previously shown in these same pre-clinical mouse models and in our studies, CA170 also resulted in significant anti-tumor activity when compared to anti PD-1 antibodies that were tested in the same studies. With regards to CA170 clinical development, patient dosing with oral CA170 in the clinic -- excuse me, began in June of this year, and has progressed through multiple dose levels with no safety events thus far that marred limiting those or continued treatment of ongoing patients. At each dose level examined, we continue to analyze patient samples to assess markers of immune modulation, including some of the same markers that we assessed in our pre-clinical studies. We also monitor extensively for safety and any signals of clinical activity as well as drug exposure and analysis of PK parameters of oral CA170. We anticipate CA170’s behavior in patients to be comparable to what we have observed in multiple non-clinical animal models. We intend to use this data to guide the selection of recommended dose in the expansion phase of this study. We look forward to discussing this data at upcoming scientific conferences and upon initiation of the expansion stage, which is currently expected in 2017. In the expansion stage, we expect to enroll patients who are naïve to anti PD-1 or PDL-1 treatment, with specific tumor types that have been shown to benefit from checkpoint targeting therapy. To effectively enroll such patients, we are opening the CA170 trial in multiple centers in Europe and in Asia, where access to approved checkpoint targeting drugs in these tumors types is limited. While anti PD-1, PDL-1 treatment naive patients are of primary interest, we also intend to enroll patients previously treated with these treatments as CA170 targets the VISTA checkpoint as well as the PD Ligands. If successful in demonstrating clinical benefit in this pre-treated patient population, it may allow for a relatively rapid path to registration for CA170. Now I'd like to turn to discussion for CUDC-907, which is being investigated as a monotherapy in an ongoing phase 2 trial in up to 60 patients with relapse refractory DLBCL to assess its efficacy specifically in DLBCL patients with MYC altered cancers. The primary endpoint of this study is overall objective response rate, with secondary endpoint of durability of clinical benefit among other end points. Based on an analysis of published historical trial results, we anticipate that a response rate in the phase 2 trial that is similar to the overall response rate that we have observed in patients with the DLBCL in our Phase 1 trial, combined with demonstrable durability of the clinical benefit, should provide the basis for discussion with the FDA. For reference, the historical median progression free survival duration in this population of patients is approximately 3 months. Our Phase 2 trial is currently open and enrolling patients in multiple centers in the US and in Europe. We expect to analyze sufficient clinical data from this study in the first half of 2017, and provided sufficient clinical benefit is observed, we expect to request a meeting with the FDA to discuss a potential path for accelerated approval of CUDC-907 monotherapy in this indication. To summarize the results from the Phase 1 trial of CUDC-907, in a total of 88 patients with advanced lymphoma or multiple myeloma that were enrolled in the study, among the 25 patients with relapsed refractory DLBCL treated with CUDC-907 monotherapy, as we have noted before, 3 patients achieve complete response, 5 achieved partial responses, and 4 achieved stable disease for an overall response rate of approximately 30%, and a disease control rate of approximately 50%. A retrospective analysis of these data confirm that among the 5 patients with known MYC altered DLBCL disease, four achieved objectives responses, including all three patients who achieved the complete response on monotherapy. Now, to comment briefly on our pre-clinical pipeline. Last month we licensed the second immunooncology program in our partnership with Aurigene. This program is focused on generating and optimizing oral small molecule candidates that target the PD1 and 10-3 immune checkpoint pathways. We've also identified CA-327 as the development candidate in this program and have initiated IND-enabling studies using this compound, with the intent of filing our IND by approximately mid-2017. Finally, I'll turn to Erivedge, which is commercialized globally by our collaboration partners, Genentech and Roche, for the treatment of advanced basal cell carcinoma. We are pleased to note that Roche and Genentech continue with their commitment to develop Erivedge and indications basal phase cell carcinoma, where they are now conducting two exploratory combination therapy trials to treating patients with. IPF and myelofibrosis. With that, I will now turn the call over to our CFO, Jim Dentzer for a discussion of our financial results. Jim?