Onconova Therapeutics Provides Corporate Update

5/17/20

NEWTOWN, Pa., (GLOBE NEWSWIRE) -- Onconova Therapeutics, Inc. (NASDAQ: ONTX), a Phase 3 stage biopharmaceutical company focused on discovering and developing novel products to treat cancer, with an initial focus on myelodysplastic syndromes (MDS), today reported financial results for the quarter ended March 31, 2020, and provided a business update.

“With enrollment completed in March, Onconova’s pivotal Phase 3 INSPIRE trial is advancing to the next catalyst. We are fortunate to have achieved full enrollment of INSPIRE prior to the pandemic-driven disruptions to research studies at hospitals and cancer centers across the globe,” said Steven M. Fruchtman, M.D., President and Chief Executive Officer. “Based on survival trends in the INSPIRE trial, we continue to anticipate reporting topline survival data in the second half of 2020. We expect to present the results of this trial at a major medical meeting later this year.”

Dr. Fruchtman continued, “Beyond INSPIRE, we are primed for additional progress, including the to be initiated Phase 1/2a study of rigosertib plus nivolumab in Stage IV KRAS mutated lung adenocarcinoma, following the renewal of clinical cancer research programs post their COVID-mandated stoppage, as well as additional planned studies of rigosertib and our pipeline programs. We are preparing for and look forward to multiple corporate milestones in the second half of 2020.”

First Quarter 2020 Developments and Recent Highlights

Additional Upcoming Company Milestones Expected

  • Pivotal survival data from the INSPIRE trial expected in 2H 2020
  • European Hematology Association Virtual Congress presentation in June 2020:
    • Mutations in RAS Pathway Genes Correlates with Type of Failure to Azacitidine: Genomic Analysis at Randomization onto the Inspire Trial (EHA-4044)
  • Type C meeting to be requested in 2Q 2020 for a randomized Phase 2/3 study of the combination of oral rigosertib plus azacitidine
  • Expansion of the rigosertib investigator-initiated program to include KRAS mutated non-small cell lung cancer, melanoma and other RAS mutated-driven cancers
  • Next generation CDK 4/6 + ARK5 inhibitor, ON123300, US IND submission planned for 4Q 2020, and Phase 1 study commencement in China planned for 2H 2020
  • Anticipated launch of Early Access Program with Inceptua Medicines Group in 2H 2020


First Quarter 2020 Financial Results
Cash and cash equivalents as of March 31, 2020, totaled $31.0 million, compared to $22.7 million as of December 31, 2019. Common stock warrant exercises since our financing transaction in November 2019 have added $10.6 million to our balance sheet. Of the almost 29 million common stock warrants outstanding as of March 31, 2020, over 80% of them were in-the-money as of May 13th. Based on current projections, the Company continues to expect that its cash and cash equivalents as of March 31, 2020 will be sufficient to fund ongoing trials and operations into the third quarter of 2021.

Net loss was $5.1 million for the quarter ended March 31, 2020, compared to $7.6 million for the quarter ended March 31, 2019. Research and development expenses were $3.4 million for the quarter ended March 31, 2020 and $4.1 million for the comparable period in 2019. General and administrative expenses were $1.8 million for the quarter ended March 31, 2020 and $3.2 million for the comparable period in 2019.

About Onconova Therapeutics, Inc.
Onconova Therapeutics, Inc. is a Phase 3-stage biopharmaceutical company focused on discovering and developing novel drugs to treat cancer, with an initial focus on myelodysplastic syndromes (MDS). Onconova has a pipeline of proprietary targeted agents designed to work against specific cellular pathways that are important in cancer cells. Advanced clinical trials with the Company’s lead compound, rigosertib, are aimed at what the Company believes are unmet medical needs of patients with MDS. Onconova has conducted trials with two other research compounds, and has a pre-clinical program with a CDK4/6 and ARK5 inhibitor, ON 123300.

For more information, please visit https://www.onconova.com/.

About Myelodysplastic Syndromes
Myelodysplastic syndromes (MDS) are conditions that can occur when the blood-forming cells in the bone marrow become dysfunctional and thus produce an inadequate number of circulating blood cells. It is frequently associated with the presence of blasts or leukemic cells in the marrow. This leads to low numbers of one or more types of circulating blood cells, and to the need for blood transfusions. In MDS, some of the cells in the bone marrow are abnormal (dysplastic) and may have genetic abnormalities associated with them. Different cell types can be affected, although the most common finding in MDS is a shortage of red blood cells (anemia). Patients with higher-risk MDS may progress to the development of acute leukemia.

About Rigosertib
Rigosertib, Onconova’s lead candidate, is a proprietary Phase 3 small molecule. A key publication in a preclinical model reported rigosertib’s ability to block cellular signaling by targeting RAS effector pathways (Divakar, S.K., et al., 2016: "A Small Molecule RAS-Mimetic Disrupts RAS Association with Effector Proteins to Block Signaling." Cell 165, 643). Onconova is currently in the clinical development stage with oral and IV rigosertib, including clinical trials studying single agent IV rigosertib in second-line higher-risk MDS patients (pivotal Phase 3 INSPIRE trial) and oral rigosertib plus azacitidine in HMA-naïve and refractory higher-risk MDS patients (Phase 2). Patents covering oral and injectable rigosertib have been issued in the US and are expected to provide coverage until at least 2037.

About the INSPIRE Phase 3 Clinical Trial
The clinical trial INternational Study of Phase 3 IV RigosErtib (INSPIRE) was finalized following guidance received from the U.S. Food and Drug Administration and the European Medicines Agency. INSPIRE is a global, multi-center, randomized, controlled study to assess the efficacy and safety of IV rigosertib in higher-risk MDS (HR-MDS) patients who had progressed on, failed to respond to, or relapsed after previous treatment with a hypomethylating agent (HMA) within nine cycles over the course of one year after initiation of HMA treatment. This time frame optimizes the opportunity to respond to treatment with an HMA prior to declaring treatment failure, as per NCCN Guidelines. Patients are randomized at a 2:1 ratio into two study arms: IV rigosertib plus Best Supportive Care versus Physician's Choice plus Best Supportive Care. The primary endpoint of INSPIRE is overall survival. The trial continued beyond the pre-specified interim analysis and is nearing its conclusion. Full details of the INSPIRE trial, such as inclusion and exclusion criteria, as well as secondary endpoints, can be found on clinicaltrials.gov (NCT02562443).

About IV Rigosertib
The intravenous form of rigosertib has been studied in Phase 1, 2, and 3 clinical trials involving more than 1,200 patients, and is currently being evaluated in a randomized Phase 3 international trial (INSPIRE) for patients with HR-MDS after failure of HMA therapy.

About Oral Rigosertib

The oral form of rigosertib was developed to provide a potentially more convenient dosage form for use where the duration of treatment may extend to multiple years. This dosage form may also support combination therapy modalities.?To date, over 400 patients have been dosed with the oral formulation of rigosertib in clinical trials. Combination therapy of oral rigosertib with azacitidine, the standard of care in HR-MDS, has also been studied. Currently, oral rigosertib is being developed as a combination therapy together with azacitidine for patients with higher-risk MDS who require HMA therapy. A Phase 1/2 trial of the combination therapy has been fully enrolled, and the updated efficacy and safety data was presented at the ASH 2019 Annual Meeting in December 2019.

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