StemCell Therapy

AGOURA HILLS, Calif., Dec. 27, 2019 (GLOBE NEWSWIRE) -- Mateon Therapeutics, Inc. (OTCQB:MATN) today announced the publication of a peer-reviewed research article co-authored by Fatih Uckun MD. PhD, the Chief Medical Officer for Mateon, Vuong Trieu, PhD, the Chief Executive Officer and President for Mateon and four hematology/oncology professors from academic US institutions in the prestigious oncology journal Cancers (Basel).

The article describes in detail the data obtained in the recently completed multi-institutional OXI1222 study that was aimed to evaluate the clinical potential of Mateons lead anti-leukemia drug Combretastatin A1 (also known as OXi4503) in adult patients with previously treated relapsed acute myeloid leukemia (AML). This clinical study was registered at http://www.clinicaltrials.gov as NCT02576301. Patients were treated by participating leukemia experts affiliated with the University of Florida, University of Kansas Cancer Center, David Geffen School of Medicine at UCLA, and University of Miami Sylvester Comprehensive Cancer Center, Miami who co-authored the published article. The primary purpose of this Phase 1B study was to define the maximum tolerated dose and safety profile of OXi4503 and cytarabine administered in combination (OXA) in patients with relapsed/refractory AML. The study was completed in August 2019 and met its primary endpoint. The study showed that adding OXi4503 to the standard chemotherapy drug cytarabine was generally well tolerated by AML patients and a maximum tolerated dose level of OXi4503 was identified as the recommended dose for further clinical development of this novel two-drug combination. In 26 evaluable AML patients, there were 4 complete remissions (CR/CRi) and one partial remission (PR). The CR responses were associated with >1-year overall survival times. The combination therapy exhibited a manageable toxicity and a promising benefit to risk profile in older adults with relapsed AML who are in urgent need for effective new therapies. The safety, feasibility, and early clinical activity of this new treatment in relapsed/refractory AML deserves further clinical validation in a randomized registration study.

This work emphasizes our commitment to find effective new therapies for difficult-to-treat cancers,stated Dr. Vuong Trieu, Chairman and Chief Executive Officer of Mateon Therapeutics.

OXi4503 has received orphan drug designation for AML in both the US and the European Union. Further, the US FDA has granted fast-track designation to OXi4503 for the treatment of relapsed/refractory AML.

AML is the most common form of adult acute leukemia with >20,000 estimated new cases and >10,000 deaths in the United States (US) for 2019. Despite recent advances in therapy, the five-year overall survival remains < 30% and prognosis is grim in patients who experience a recurrence of their disease after first-line induction therapy, with <10% surviving five years after relapse.The greatest challenge in AML is relapsed or refractory disease. For relapsed or refractory AML, there is no consensus on a single re-induction regimen.By combining OXi4503 with the standard chemotherapy drug cytarabine, we hope to develop an innovative approach that improves outcomes for patients with relapsed AML, especially those who are older and have a dismal prognosis, explained Fatih Uckun, MD, PhD, Chief Medical Officer of Mateon Therapeutics.

The research article "A Phase 1B Clinical Study of Combretastatin A1 Diphosphate (OXi4503) and Cytarabine (ARA-C) in Combination(OXA) for Patients with Relapsed or Refractory Acute Myeloid Leukemia" hasbeen published in Cancers (Basel) as part of the Special Issue Personalized Medicine:Recent Progress in Cancer Therapy and is available online:

Abstract:https://www.mdpi.com/2072-6694/12/1/74PDF Version:https://www.mdpi.com/2072-6694/12/1/74/pdfSpecial Issue:https://www.mdpi.com/journal/cancers/special_issues/PM_Cancers

About Mateon TherapeuticsMateon was created by the recent reverse merger with Oncotelic which became a wholly owned subsidiary of Mateon Therapeutics Inc. (OTCQB:MATN) creating an immuno-oncology company dedicated to the development of first in class RNA therapeutics as well as small molecule drugs against cancer. The founding team members of Oncotelic were responsible for the development of Celgenes Abraxane as a chemotherapeutic agent for breast, lung, melanoma, and pancreatic cancer. Abraxane was approved in 2005 and has more than $1B in sales annually. The same team was also responsible for the development of Cynviloq, a next generation Abraxane, which was acquired by NantPharma for $1.3B. Mateon/Oncotelic is seeking to leverage its deep expertise in oncology drug development to improve treatment outcomes and survival of cancer patients with a special emphasis on pediatric cancer patients. For more information, please visit http://www.oncotelic.com and http://www.mateon.com.

The Chief Executive Officer of Mateon, Dr. Vuong Trieu, PhD is a very experienced biotech executive and a KOL in the field of immunotherapy. He is best known for his seminal contributions to the development of Abraxane (https://www.linkedin.com/in/vuong-trieu-3a64aa3b).

The Chief Medical Officer of Mateon, Dr. Fatih Uckun MD, PhD, is an internationally renowned KOL in cancer research and treatment (https://www.linkedin.com/in/fatihuckun). Dr. Uckun is an elected Member of the American Society for Clinical Investigation (ASCI), an honor society for physician-scientists, and an active member of several professional organizations. He received numerous national and international awards for his work on biologics and small molecule targeted therapeutics for difficult-to-treat cancers. He is a former recipient of the Stohlman Memorial Award from the Leukemia & Lymphoma Society, the highest honor given to a Clinical Leukemia Scholar.

Mateon's Cautionary Note on Forward-Looking StatementsThis press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. All statements, other than statements of historical facts, included in this communication regarding strategy, future operations, future financial position, prospects, plans and objectives of management are forward-looking statements. Words such as may, expect, anticipate hope, vision, optimism, design, exciting, innovative, promising, will, conviction, "estimate," "intend," "believe", quest for a cure of cancer, innovation-driven, paradigm-shift, high scientific merit, impact potential and similar expressions are intended to identify forward-looking statements. Forward-looking statements contained in this press release include, but are not limited to, statements about future plans, the progress, timing, clinical development, scope and success of future clinical trials, the reporting of clinical data for the companys product candidates and the potential use of the companys product candidates to treat various cancer indications. Each of these forward-looking statements involves risks and uncertainties and actual results may differ materially from these forward-looking statements. Many factors may cause differences between current expectations and actual results, including unexpected safety or efficacy data observed during preclinical or clinical studies, clinical trial site activation or enrollment rates that are lower than expected, changes in expected or existing competition, changes in the regulatory environment, failure of collaborators to support or advance collaborations or product candidates and unexpected litigation or other disputes. These risks are not exhaustive, the company faces known and unknown risks, including the risk factors described in the companys annual report on Form 10-K filed with the SEC on April 10, 2019 and in the companys other periodic filings. Forward-looking statements are based on expectations and assumptions as of the date of this press release. Except as required by law, the company does not assume any obligation to update forward-looking statements contained herein to reflect any change in expectations, whether as a result of new information future events, or otherwise.

Contact Information:For Mateon Therapeutics, Inc.:Amit ShahEmail: ashah@oncotelic.com

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Mateon Therapeutics Team Publishes a New Peer-Reviewed Oncology Article on the Positive Clinical Study Results for Its Lead Anti-Leukemia Drug...

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