Dr. Steven Fruchtman
Analyst · Jason McCarthy with Maxim Group. Your line is now open
Thank you very much, Ramesh. At Onconova, we continue to be very excited about our differentiated pipeline and the strong progress we’re making in our ongoing clinical trial programs that are advancing very nicely towards important inflection points. These programs include our lead clinical program the Phase 3 INSPIRE pivotal trial with intravenous Rigosertib for high risk second-line patients with myelodysplastic syndromes also known as MDS who have failed to respond to progressed while on hypomethylating agents such as a Azacitidine or Decitabine. In January of 2018, we announced a completion of a preplanned interim safety and efficacy analysis leading to an increase in the sample size for the ongoing pivotal Phase 3 INSPIRE trial. We expect to complete full approval to this trial and provide topline data in the second half of 2019. We have two Rigosertib clinical programs, one, with intravenous Rigosertib, and the second, with oral Rigosertib to address the unmet medical needs of high-risk MDS patients. The INSPIRE trial with intravenous Rigosertib is ongoing and the Phase 2 combination trial of oral Rigosertib with injectable Azacitidine will be presented at the upcoming American Society of Hematology Meeting, which is also referred to as ASH. The combination trial is in patients with high-risk MDS and includes both HMA naïve, as well as patients who are refractory to HMA or Azacitidine therapy. The synopsis for this proposed pivotal Phase 3 trial to follow the combination Phase 2 trial to be presented at ASH will be in high risk patients with MDS and has been reviewed with the U.S. and ex-U.S. health authorities, and we have agreed on the trial design and a composite response endpoint. We plan to conduct this pivotal Phase 3 trial under a Special Protocol Assessment or SPA to be filed by the end of this year 2018. This filing will be followed by a similar submission in Europe and Japan, the latter by our partner in Japan and Korea SymBio. After the SPA negotiation process is completed, the pivotal Phase 3 trial for the combination product for front-line HMA naïve high-risk MDS patients may be initiated pending financing or business development activities. As a reminder, and for those who may be new to the Onconova story, MDS is a very complex disease of bone marrow failure syndromes associated, with the infiltration of the bone marrow with leukemia cells and is most often seen in elderly patients. Up to 30% of patients with high-risk MDS may advance to acute leukemia, typically AML, which is why and the reason they are designated as high-risk MDS patients. The patients who transform to AML are refractory to hypomethylating agents, as well as standard induction chemotherapy and typically unfortunately succumb to their underlying disease. There are no approved products in the world for high-risk MDS patients who fail hypomethylating agent, which is the current standard-of-care for high-risk MDS. Thus Rigosertib has the potential to address this critical unmet medical need. We have also conducted a Phase 2 trial with oral Rigosertib in low-risk MDS patients. The data was most recently presented at the 2017 ASH meeting. This trial focused on low-risk MDS patients who are red cell transfusion dependant. Similar to high-risk MDS patients, low-risk MDS patients also suffer from inadequate bone marrow function and are typically unfortunately unable to produce adequate numbers of circulating blood. But they have a low-risk of transforming to acute leukemia than those with high-risk disease and thus the low-risk MDS designation. There are more than 10,000 low risk MDS patients in the U.S. and these patients also have a tremendous unmet medical need due to their need for transfusional support and we hope to address this need. Our therapeutic goal is improving their bone marrow function and ideally making these patients either red cell transfusion independent or reduce their need for transfusional support. We have continued to actively participate in and present at major MDS conferences across the globe on our ongoing trials. Following the interim analysis of the pivotal INSPIRE Phase 3 trial, we reported results across our MDS pipeline. We presented initial Phase 2 safety data from the expansion study of oral higher dose Rigosertib in combination with Azacitidine in patients with MDS at the recent 6th International Bone Marrow Failure Disease Symposium in March of 2018. We previously presented efficacy data at ASH with this combination and the data demonstrated an encouraging overall response rate of 76%, 62% in patients following HMA failure, and 85% response in HMA naïve patients. As Ramesh already mentioned, we were pleased to have four abstracts related to Rigosertib accepted for presentation at the upcoming 60th American society of Hematology Meeting. Dr. Shyamala Navada of the Icahn School of Medicine at Mount Sinai Hospital in New York on behalf of all of our co-investigators, will present updated efficacy and safety data from the Phase 2 combination trial of oral Rigosertib plus azacitidine. Additional presentations at ASH will highlight the PK/PD and safety clinical data from patients treated with this combination, as well as a punitive biomarker to predict responses to Rigosertib will also be presented. As we make progress with our key Rigosertib trials in adult MDS, and as I mentioned, we await the results from our funded collaboration under a CRADA with the National Cancer Institute or NCI in pediatric cancer associated RASopathies in children born with the RAS mutation. The NCI is conducting PK/PD and dose escalation studies in preclinical models to prepare for dosing of pediatric patients with single-agent Rigosertib. A clinical trial protocol concept has been developed and is under review at the NCI. Based on NCI guidance, we expect the first pediatric patients to be put on study in the first half of 2019. Regarding one of the RASopathies , juvenile myelomonocytic leukemia or JMML, also referred to as pediatric MDS, the National Cancer Institute intends to conduct a Phase 1 trial with Rigosertib as part of a collaborative initiative with Onconova for the treatment of JMML and although oncological RAS driven genomic pathway diseases. As I mentioned, we have a cooperative research and development agreement or CRADA with the NCI and clinical protocols under their review. We anticipate this trial will start in the first half of 2019. In addition, preclinical models of JMML are being studied at the University of California at San Francisco, an expert center in the studies of JMML and is being funded by the leukemia and lymphoma society. We also have a number of investigator initiated studies. A study for patients with myeloproliferative neoplasms or MPNs where the bone marrow makes too many circulating blood cells is being conducted at MDS and Cancer Center. And the second study on RAS driven rare squamous cell carcinoma of the skin is being run at centers of excellence in Europe with expertise in this disease -- in this rare condition. Additional combination studies with Rigosertib in solid tumors are under consideration. In summary, there are many important ongoing activities related to the advancement of both intravenous and oral Rigosertib programs in MDS, which are moving forward toward impactful milestones for Onconova in the near-term. We will remain focused on these programs, while also looking to enhance the potential of Rigosertib in additional indications and collaborate -- and combinations through collaborations and partnerships. With that, I thank you and I will turn the call over to Mark Guerin, our Chief Financial Officer, for a discussion of our financial results for the quarter. Mark?