AGOURA HILLS, Calif., July 13, 2020 (GLOBE NEWSWIRE) — Mateon Therapeutics (OTCQB: MATN), a leading developer of TGF-β therapeutics, announced today that it will fund observational studies for Artemisinin, an herbal supplement, that demonstrated potent in vitro activity against SARS-CoV-2, the COVID-19 virus. By collecting data from multiple clinical observational studies globally, the company expects to establish Artemisinin efficacy against COVID-19 as an affordable front-line treatment for this pandemic in low resources countries.