Ramesh Kumar
Analyst · H.C. Wainwright. Your line is now open
Thank you, Caja. Good morning and welcome to our full year 2017 results call. Joining me from Onconova’s management team is our CFO, Mark Guerin. 2017 and the first few months of this year marked a turning point in the clinical development of our lead Phase 3 clinical candidate rigosertib culminating in the announcement of promising interim results and the continuation of the INSPIRE pivotal trial. We are proud to be at the frontline of this indication as we seek to address the unmet medical needs of patients with higher risk MDS. We have also made significant advances across the rest of our pipeline and met several strategic business development objectives. We have now secured regional licensing agreements for our pipeline candidates. Early this week, we announced an agreement with Pint Pharma to commercialize rigosertib in Latin America. Pint has an existing hematology/oncology portfolio and a wide footprint in the region. We view this agreement as further validation of rigosertib for the treatment of MDS. Back in December, we also signed a China regional license and collaboration agreement with HanX Biopharmaceuticals for ON 123300, a first-in-class dual inhibitor of CDK4/6 + ARK5. Importantly, this collaboration places ON 123300 on an IND track and towards clinical data in 2019. As we foreshadowed in our third quarter results call, we entered into a CRADA, Cooperative Research and Development Agreement with the National Cancer Institute. NCI will conduct research including preclinical laboratory studies and clinical trial on rigosertib in pediatric cancer associated RASopathies. The execution of these three transactions combined with recent capital raises underscores our ability to leverage the late-stage program pipeline assets to finance multiple programs. In addition to the promising interim analysis of INSPIRE trial, we also reported positive results across our MDS pipeline in recent months. We delivered two presentations highlighting drug activity and the mechanism action of rigosertib in MDS at the ASH annual meeting in December. We also published results from the Phase 1/2 study of IV rigosertib in patients with MDS showing that patients with response or stable disease lived a median of one year longer than non-responders. Based on the continued progress in our oral rigosertib/azacitidine combination Phase 2 program in frontline MDS, we expect to develop additional regional collaborations and creative partnerships to help advance to a pivotal Phase 3 trial for oral rigosertib. Looking ahead, we plan to present clinical data at the Bone Marrow Failure Disease Scientific Symposium in Maryland. We’re also scheduled to present two abstracts at the American Chemical Society National meeting in New Orleans. All-in-all, I’m delighted with the progress in recent months and we are well positioned to continue to execute on our strategy in 2018. I will now highlight the outcome of the interim analysis of our Phase 3 INSPIRE trial which is studying IV rigosertib in patients with higher risk MDS who have progressed on, failed to respond to or relapsed after prior hypomethylating agents or HMA therapy. This is our most advanced program and the key area focus. In January, we announced that we are now moving forward with the Phase 3 INSPIRE pivotal trial following the recommendation of the Data Monitoring Committee and unanimous approval by the Executive Committee overseeing the trial. The DMC recommended a one-time expansion in enrollment using a pre-planned sample size re-estimation, which is consistent with our Statistical Analysis Plan previously discussed with the FDA and EMA. There are few choices for higher risk MDS patients after failure of HMA therapy and no second-line therapy has ever been approved by the health authorities for these patients. These patients have a very short lifespan and there is tremendous unmet medical need. We believe that this trial is the most advanced study for new therapeutic agents for MDS patients after failure of frontline HMA. The expanded INSPIRE study will enroll eligible patients based on the current trial design with enrollment target of 360 patients, with the aim of increasing the power of the trial. As mentioned in the past, the SAP for the INSPIRE trial featured an adaptive trial design permitting several options following the interim analysis which included discontinuation of the trial for futility, continuation of the trial as planned, trial expansion using pre-planned sample size re-estimation, and trial continuation but limited only for the pre-defined treatment subgroup of patients classified as very high risk based on the Revised IPSS system. After interim, the third option was elected based on the review of the data by the DMC. Accordingly, the INSPIRE trial will analyze both ITT and very high risk population for the primary endpoint of overall survival. In the INSPIRE trial enrollment so far, the pre-defined subgroup for very high risk patients constitute greater than 70% of the patients enrolled, a much higher proportion than that was observed in the ONTIME study. It’s important to note that we remain blinded through the interim analysis results. INSPIRE study is active in more than 170 sites in 22 countries across four continents, and more than half of the patients required in the expanded study have been enrolled. We’re planning to add sites in Europe and new territories including Latin America in conjunction with our partner Pint. We look forward to completing enrollment and for the opportunity to analyze overall survival in the MDS patients who have failed prior HMA therapy. We believe that full enrollment can be achieved in the first half of 2019. Our second advanced program is an oral rigosertib plus azacitidine combination as a potential first-in-line therapy for patients with higher risk MDS. A Phase 2 expansion trial of the combination is expected to be fully enrolled this month with the addition of more than 40 patients. Once the expansion trial is evaluated, we plan to submit the pivotal Phase 3 protocol to the FDA under the SPA process, Special Protocol Assessment. The initiation of the Phase 3 trial which is planned to be conducted globally requires additional financing and/or business development transactions. Earlier this month, we presented data relating to the mechanism of action of rigosertib in combination with azacitidine at the AACR Special Conference. The results suggested potential novel clinical strategies to improve outcomes in patients with higher risk MDS and reversal of resistance to treatment with epigenetic therapies. Previously presented data demonstrates that the combination therapy may overcome HMA resistance and also indicates that further study of rigosertib in AML is warranted. Given that as many as 30% of MDS patients go on to develop AML, it is our intention to study AML in the future. We also plan to present initial data from this expanded study at scientific conferences throughout 2018 highlighting the result of dose selection and optimization of the combination regimen, and the potential for combination therapy in MDS and AML. Our plan is to couple the advancement of our programs with strategic transactions and collaborations. The most recent deal announced was with Pint Pharma, a European-based pharmaceutical company focused on the development, registration and commercialization of treatments in Latin America and our deal is for commercialization of rigosertib in Latin America. This agreement adds to our existing partnership with SymBio in Japan and Korea. In exchange for these Latin American rights, Pint will make investment totaling up to 2.5 million by purchasing shares at a premium to market. In addition, regulatory, development and sales-based milestone payments to Onconova of up to 42.75 million and double digit tiered royalties on net sales are included in the agreement. We will supply the finished product for sale in the licensed territories while Pint will support our clinical trial initiatives in their region. We look forward to working with the clinicians and experts at Pint Pharma to advance clinical trials for IV and oral rigosertib in important centers in their territory. In December, we also signed a license and collaboration agreement with HanX Biopharmaceuticals which has strong expertise in drug development and commercialization for the further development, registration and commercialization of ON 123300 in China. ON 123300 is a first-in-class dual inhibitor of CDK4/6 + ARK5, which is currently in advanced pre-clinical development. We believe the compound has the potential to overcome some of the limitations of the current generation CDK 4/6 inhibitors. Under the terms of the agreement with HanX, we are due to receive an upfront payment, potential regulatory and commercial milestone payments, as well as royalties on Chinese sales. The key feature of the collaboration is that HanX will provide funding required for IND enabling studies. Both companies will oversee the IND enabling studies and we will maintain global rights outside of China. We have initiated a pre-IND process for ON 123300 with the FDA and expect to announce the timeline for the IND and plan a clinical exploration in the coming months. Our next generation CDK compound has the potential to overcome some of the limitations of the current generation compounds that require a combination treatment for therapeutic use. As such, we’re excited to advance 123300 towards an IND. Since our last earnings call, we delivered two presentations highlighting drug activity and the mechanism of action of rigosertib in MDS during the 59th ASH Annual Meeting in Atlanta. The highlight of the presentation include oral rigosertib as a second agent demonstrating activity in a Phase 2 trial for lower risk MDS; 32% of 62 evaluable patients, and 44% of patients receiving optimal dosing, achieved transfusion independence which could be an approval endpoint. And we also presented new data on the molecular basis of the combination therapy with rigosertib and azacitidine. Notably, this data was in lower risk MDS where the incidence is very high and the potential duration of treatment is quite long. We also announced a publication of results from phase 1/2 study of rigosertib in patients with MDS and MDS progressing to AML in a journal Leukemia Research. In the study, rigosertib reduced or stabilized bone marrow blasts and improved peripheral blood counts, and patients with response or stable disease had one year longer survival than non-responders. So a lot going on with rigosertib in MDS. We are encouraged by the progress in our late-stage program and the exciting developments underway in our earlier stage programs and partnerships. I will now turn the call over to Mark Guerin, our CFO, for a discussion of our financial results in the full year. Mark?