Ramesh Kumar
Analyst · Jason McCarthy with Maxim Group
Thank you. Good morning and welcome. Joining me from Onconova’s management team is the CFO, Mark Guerin. We had a productive start to the year, advancing the Phase 3 INSPIRE trial of our lead clinical candidate and securing additional funding to support our late stage trial as we position Onconova for multiple key milestones. During the quarter, our targeted Phase 3 study of IV rigosertib for patients with second line higher risk MDS, continued to advance. The INSPIRE trial is now open in 18 countries. And consistent with our earlier guidance, we are on track for interim analysis and full enrolment targets over the coming year. We’re also on track to submit the protocol for a physical Phase 3 trial for first line patients with MDS for oral rigosertib in combination with azacitidine with the FDA. We plan to pursue special protocol assessment, SPA. We recently initiated the scientific advice process with the EMA for this study, having completed the end of Phase 2 meeting with the FDA last year. While designing the new trial, we have expanded our Phase 2 trial to obtain additional efficacy and tolerability data for the combination routine across a large number of sites. We believe that this additional data will be helpful for the new Phase 3 trial. Alongside the advancement of our IV and oral rigosertib formulations, we reported positive data on two promising pre-clinical candidates in this quarter. In particular, I would like to highlight data on our third generation CDK4/6 antagonist demonstrating potential advantages over second generation CDK inhibitors, now in the market for breast cancer indications. We secured initial funding last month and we are well positioned to execute our clinical development plan, as we seek to advance innovative treatments for patients with MDS and other cancers. 2017 represents an important year in our clinical development, with interim analysis of our INSPIRE pivotal trial expected in the second half of the year. Considering that INSPIRE patient population is highly selective, we are pleased with the trial progress to date. We’ve already activated one in 63 sites across 15 countries, including 33 in Japan, 44 in North America and the rest of the world. We expect the final three to four countries to join this study in the coming months. Reflecting the complex operational process between activated side and first patient enrolment, as of April 30, only 60 of the active sites have enrolled patients, with the first patient enrolled in Belgium, Ireland and Israel, as well as Italy during the months of March and April. We intend to provide updates on enrolment statistics only after we open all the sites, which we expect to be in the second quarter of 2017. Recently, we also completed our second preplanned Data Monitoring Committee review. After review of safety data from enrolled patients in the INSPIRE trial, the DMC recommended that the study proceed as planned. I would like to reiterate a point I made in the last call. The INSPIRE trial is highly selective and requires us to search extensively to identify appropriate candidates that meet stringent entry criteria. These criteria are based in part on the learnings from our previous Phase 3 ONTIME trial. Since currently there are no approved therapies for second line high risk MDS patients, several early stage clinical trials, as well as the alternative of no treatment are competing with our pivotal trial. This is one reason for the broad based trial approach we are pursuing. The ONTIME trial identified several previously recognized prognostic factors, including patients of groups who appeared to experience improvement in the primary endpoint of overall survival. By leveraging these prognostic (indiscernible) in the design of the INSPIRE trial for patients who are refractory to prior hypomethylating agent therapy, we are aiming to increase the probability of the trial’s success. In addition, the provision for interim analysis provides another window into the progress of the new trial. Our statistical analysis plan is now under review by the FDA and EMA and will be the - will provide the basis for data analysis at the interim and top line intervals. We expect this review to be completed in the second quarter. In this analysis, the INSPIRE study design permits two looks into the study populations, ITT as well as a predefined IPSS-R very high risk sub group, providing two shots on goal with the data. Based on our progress to date, we continue to project full enrolment by the first quarter of 2018 or sooner if the enrolment further accelerates with all sites active from the second quarter of 2017. We will provide updates. We anticipate final data in 2018, allowing for global filings and commercial launch in 2019. We believe this open opportunity there presents a compelling global commercial proposition. Turning to our oral formulation of rigosertib in combination with azacitidine, the synopsis of this trial - the pivotal trial has been prepared. Recently we submitted a briefing book to the EMA for scientific advice. As I mentioned earlier, we expect to submit the protocol for SPA to the FDA during the third quarter. We've also expanded our Phase 2 trial of rigosertib in combination with azacitidine. The two key objectives of the study are to obtain additional data on efficacy and tolerability of the combination regimen by continuing dose exploration and quality of life assessment in the new cohorts. We expect to open more than 10 sites in this extension of the Phase 2 trial, including all three sites that participated in the original study. And we expect to enroll up to 40 new patients. The first two patients have been enrolled in this expansion study. Earlier this month, we presented clinical data at the 14th International Symposium for MDS in Valencia, Spain, alongside our collaborators from Mt Sinai School of Medicine and The Cleveland Clinic. Our oral presentation of data from the Phase 2 combination trial highlighted the duration of benefit in patients with complete remission and presented a case study of a HMA (failure) patient who benefited - who continued to benefit from the combination therapy for more than two years. Then, in a poster presentation, a new prognostic tool being developed at the Cleveland Clinic, was applied to retrospective analysis of ONTIME trial data to highlight the heterogeneity of the enrolled patients. The new INSPIRE trial eligibility is designed to include a more homogeneous patient population. As a reminder, frontline MDS represents a much larger medical need and opportunity due to the increased number of patients and longer potential duration of treatment. I would also like to reiterate that during our meeting with the FDA, we determined that the unexpected - the expected endpoint for the upcoming Phase 3 trial will be related to response rather than overall survival, thereby potentially reducing the trial’s cost. As all study patients will be receiving an approved or experimental treatment, we also expect the enrolment to be relatively fast. During the first quarter, we also reported exciting data about two, three clinical compounds, underscoring the depth of our pipeline. Positive preclinical data was announced for a first in class dual inhibitor of CDK4/6 + ARK5, as well as the Type 1 novel inhibitor of FLT3 and Src pathways as a novel strategy for AML. And these presentations were made at the AACR conference in D.C. in April. ON 123300 is a third generation potent CDK4/6 inhibitor that also inhibits ARK5 with low nanomolar potency. And this compound was found to be as effective as Palbociclib, the new breast cancer drug called Pfizer's Ibrance in an Rb positive xenograft model. Moreover, the molecule may have the potential advantage of reduced neutropenia when compared to Palbociclib. There is a need for next generation CDK4/6 inhibitors given the limitations of second-generation compounds that depend on a second molecule for therapeutic use. We are particularly excited about ON 123300 because of its potential to act as a single agent, as a dual inhibitor of CDK 4/6 + ARK 5, which could be suitable for indications that may not be amenable to Palbociclib-like second generation compounds. We also presented data on a novel FLT3 plus Src inhibitor, ON 150030 is a Type 1 inhibitor which is differentiated from Type 2 inhibitors such as Quizartinib that do not work against mutated kinases. We’re actively seeking partners for our early stage development programs, as well as regional partners for rigosertib. I would like to share with you that we're initiating a (cradle) or collaborative program focusing on diseases with well-defined molecular basis in defects in the Ras Effector Pathways, which are the target of rigosertib. Based on new data published last year, with developing preclinical and clinical collaborative programs with the National Institute of Health, National Cancer Institute, as well as academic investigators and patient advocacy groups. NIH/NCI scientists are developing a broad ranging rigosertib clinical protocol for pediatric rasopathies. The (cradle) will be executed with the NIH/NCI to permit the clinical trial with rigosertib in these indications. Another therapeutic focus will be JMML or Juvenile Myelomonocytic Leukemia, a well described rasopathy affecting children, which is incurable without an allogenic transplant. Further details of these programs will be presented in a KOL, Key Opinion Leaders session expected to be held in New York during the third quarter of 2017. I will now hand the call over to our CFO, Mark Guerin.