Ali Fattaey
Analyst · Robert Baird. Your line is open, please go ahead
Thank you, Mani and thank you to the conference call and webcast participants for joining us this morning. We continue to focus our efforts on building Curis into an oncology company with strategic emphasis on our development capabilities as we expand our pipelines with the aim of eventual commercialization of innovative and effective drugs for the treatment of patients with cancer. In addition to the progress with our proprietary clinical drug candidate CUDC-907 we recently exercised two options under our collaboration with Aurigene. One of these involved the license to a pre-IND stage oral immunomodulatory small molecule that targets PD ligands and VISTA inhibitor checkpoint proteins and from now on this molecule is being referred to as CA-170. And the second was a license to a preclinical program of potent and selective inhibitors of the IRAK4 kinase. I will provide additional details regarding these three programs today. Let me begin with our most advanced molecule CUDC-907 which is an oral dual HDAC PI3 kinase inhibitor that we have been investigating in patients with relapse or refractory aggressive lymphomas and separately in patients with certain solid tumors. We are very pleased with the progress being made with CUDC-907, especially in the setting of relapsed refractory diffuse large B-cell lymphoma or DLBCL. Earlier this year we reported interim results from the Phase 1 trial of CUDC-907 in patients with relapsed refractory lymphoma and multiple myeloma at the ASCO Annual Meeting, the European Hematology Association Annual Meeting, as well as at the International Congress on Malignant Lymphoma at Lugano. In these meetings we reported that CUDC-907 monotherapy treatment was very safe and six out of the ten response evaluable, heavily pretreated patients with relapsed refractory DLBCL experienced objective responses, including two patients with complete responses and four patients with partial responses, while two out of the 10 patients had stable disease. Since then, we have continued to enroll patients with DLBCL in expansion cohorts where CUDC-907 is administered as monotherapy or in combination with rituximab. At the upcoming ASH Annual Meeting in Orlando in December the principal investigator for this file Dr. Anas Younes will provide an update on CUDC-907 in an oral presentation. We expect to present an update on all evaluable patients including those from the CUDC-907 plus rituximab combination treatment on the expansion phase of the trial. In addition we expect to present results that tumors from a number of patients with objective responses expressed MYC oncogene protein at high levels and that these correlative results are very consistent with our preclinical observations. This correlation between MYC alterations and clinical benefit is being translated into the design of a Phase 2 clinical trial with CUDC-907 in patients with relapsed refractory DLBCL and that we intend to initiate this trial before year end. We continue to remain very optimistic about CUDC-907's potential in patients with relapsed refractory DLBCL and plan to share details of the proposed Phase 2 trial around the ASH Conference as well. In addition to the ongoing study in hematologic malignancies we continue to enroll patients with advanced solid tumors in an independent Phase 1 trial for the treatment with CUDC-907. Based on CUDC-907 pharmacokinetic properties the molecule appears to readily distribute to various tissues including the tumor tissue with a high resident half life thus exposing the tumors to significant concentrations of CUDC-907 in this solid tumor trial. Additionally, based on insights from our lymphoma study we are planning to modify the solid tumor trial in order to examine the role of the MYC alterations and clinical benefit with CUDC-907 in patients with various solid tumors, including patients with not midline carcinoma. We look forward to providing further updates from the solid tumor study in the coming months. I'd now like to provide an update on our collaboration with Aurigene. Since the announcement of our agreement earlier this year, both Curis and Aurigene teams have been fully engaged with advancing molecules from our collaboration program towards IND filing and preparation for clinical testing. We have recently exercised two options to licensed programs under this collaboration. Within the immune-oncology field we licensed the first-in-class oral small molecule that targets and antagonizes two immune checkpoint regulators, PD ligands and VISTA. We have designated this molecule a CA-170 and are currently conducting IND enabling studies with this molecule. Based on the in vitro and in vivo data in multiple tumor models as well as pharmacokinetic and pharmacodynamic properties we selected CA-170 from a broad program that the two companies have focused on since the beginning of the collaboration. Last Friday, our colleagues at Aurigene presented more detailed preclinical data from this program at the AACR-NCI-EORTC International Meeting in Boston and the presentation is available on our website for your review. I would like to take this opportunity to highlight some aspects of CA-170 here. CA-170 is an orally available small molecule that targets the PD ligands and the VISTA checkpoint inhibitors, both of which are members of the B7 super family of immune regulators and have structural similarity in their extracellular domains. Within the tumor microenvironment, the PD ligands appear to be expressed predominantly on tumor cell, whereas VISTA expression is restricted mainly to cells of the myeloid origin such as the myeloid drive suppressor cells within the tumor microenvironment. Mechanistically PD ligands and VISTA inhibit T-cell activation leading to the generation of exhausted T-cells. Our colleagues at Aurigene were able to show that CA-170 can rescue T-cell proliferation and functional activity as measured by production of interferon gamma that have been specifically inhibited by PD ligands or by VISTA. Although if T-cells are inhibited by other checkpoint regulators such as M3 or CTLA-4 CA-170 is not able to rescue such T-cells therefore suggesting that CA-170 only and specifically antagonizes PD ligands and VISTA checkpoints. Additionally, we and our Aurigene colleagues have tested CA-170 in multiple syngeneic tumor models such as those for melanoma, colorectal cancer and breast cancers. CA-170 has demonstrated effective antitumor activity in these models including in settings that are not effectively addressed by anti-PD1 antibody-based treatments alone. This is in line with what has been reported pre-clinically by others that PD and VISTA pathways are non-redundant and inhibition of both may synergize in mediating antitumor effects. Based on these preclinical results, we expect that in addition to tumors that are responsive to PD pathway directed therapies CA-170 may potentially be used for the treatment of tumors that are nonresponsive or that become refractory to these types of treatments. CA-170 is currently undergoing evaluation in IND enabling studies including GLP toxicology assessment and we are pleased that thus far CA-170 appears safe with a very high therapeutic index in both rodents and nonhuman primate models. We expect to complete the IND enabling studies and file the IND application and initiate a Phase 1 trial of CA-170 within the first half of 2016. In addition to CA-170 we also selected the second preclinical program within the immuno-oncology collaboration with Aurigene. This program takes advantage of the novel chemistry that is developed by Aurigene and is focused on evaluating small molecule antagonist with dual PD-L1 and T-cell immunoglobulin and mucin domain containing protein-3 or TIM-3 targeting properties. TIM-3 is an independent inhibitory checkpoint molecule that plays an important role in immune suppression and is generally co-expressed with PD-1 receptors on highly exhaustive cytotoxic T-cells in the tumor tissues as well as being expressed on certain regulatory T-cells. The lead compounds within this program show potent and selective rescue of T-cell proliferation and function that is induced by PDL and TIM-3, but not by other checkpoint proteins. Outside of immuno-oncology we also exercised our option to license the IRAK4 inhibitor program, which was initiated at the beginning of our collaboration. Aurigene also presented preclinical data from this program during the weekend at the AACR-NCI-EORTC International Meeting and the poster for this presentation is available on our website for your review as well. IRAK4 is a serine/threonine kinase that is an important mediator of Toll-like receptor and interleukin-1 receptor signaling and thus plays an important role in innate immune signaling. Based on this function in this pathway IRAK4 has been of interest as a target to discover drug candidates for treatment of inflammatory diseases. In certain human cancers also such as a subset of DLBCL, CLL and Waldenström's macroglobulinemia oncogenic mutations in the MYD88 genes lead to constitutive activation of IRAK4 leading to the malignant phenotype. Preclinical data from the IRAK4 program showed that the lead compounds from this program are potent selective inhibitors of IRAK4 and have potent antitumor activity in in vivo tumor models with activating MYD88 mutation. In addition to the cancer models, some of these compounds also demonstrate activity in in vivo inflammatory disease models indicating the potential of targeting IRAK4 in both oncology and inflammatory diseases. We are continuing to develop lead molecules and assess their activity in both cancer and inflammatory disease models and have initiated IND enabling studies and expect to file and IND application during the first half of 2016 for clinical testing of these lead candidates. We are very pleased with the progress being made within our collaboration with Aurigene where the two companies are working with the mission of aligning our complementary expertise to expedite development of promising molecules in the field of cancer therapeutics. We continue to remain disciplined in building our development capabilities and advancing our drug candidates in the coming months. Our focus will remain on advancing CUDC-907 into Phase 2 clinical testing in a select group of patients with relapsed refractory DLBCL and also completing the IND enabling studies for CA-170 and IRAK4 inhibitors to advance these modules into the clinic. I will now turn to Erivedge which is being developed and commercialized globally by Genentech and Roche under our collaboration. Roche continues to concentrate on the global commercialization of Erivedge for the treatment of advanced basal cell carcinoma in key territories worldwide. In this regard we recorded royalty revenues of approximately $2.3 million for the third quarter of this year as compared to $1.8 million for the third quarter of 2014. Year-to-date royalty revenues were $6 million as compared to $4.9 million for the nine months period ending September 30, 2014. Recently our partner Roche disclosed its intent to initiate a clinical study to examine the effectiveness of Erivedge in patients with intermediate or high risk myelofibrosis in combination with ruxolitinib or Jakafi which is a JAK kinase inhibitor approved for the treatment of patients with this disease. Myelofibrosis is a serious bone marrow disorder that disrupts the body's normal production of blood cells resulting in extensive scarring in the bone marrow leading to anemia, weakness, fatigue and often an enlarged spleen and liver. Now our Phase 1B portion of this study will assess the safety of Erivedge plus ruxolitinib combined therapy. After the safety of the combination regimen is confirmed a randomized controlled portion of this study may begin. The primary endpoints of this study include reduction in spleen volume and overall response rate and details of this study can be found on clinicaltrials.gov. Outside of oncology, Roche continues to indicate an interest in investigating Erivedge in idiopathic pulmonary fibrosis or IPF. In June of 2014 Roche filed an IND application with the FDA to initiate a multicenter Phase 2 clinical study of Erivedge in patients with IPF. After the Phase 2 study opened but prior to patient enrollment Roche suspended the study in August of 2014 in order to amend the protocol to incorporate Esbriet or pirfenidone, the new standard of care for IPF into the trial design. We are very pleased that Roche continues to invest in Erivedge and look forward to providing further updates as they become available regarding all of these trials. Lastly, I would like to note that James Tobin has resigned as a Director of the Company effective November 04, 2015 after having served as a Director since the inception of the Company. We are grateful for the many significant contributions that Jim has made during his tenure as a Curis Board member and we wish him well in his future endeavors. The Company has benefited greatly from Jim's experience and insights and I join the rest of the Board and Management Team at Curis in thanking Jim for his many years of valuable service. I would now like to turn the call over to Mike Gray, our Chief Financial Officer and Chief Business Officer for his discussion of our financial results, after which we will open the call for Q and A.