RELIEF THERAPEUTICS Holding AG (SIX:RLF) “Relief” and its U.S. partner, NeuroRx, Inc. today announced that the phase 2/3 clinical trial evaluating RLF-100 as a treatment for Critical COVID-19 with Respiratory Failure has been expanded to include patients receiving high flow oxygen and noninvasive ventilation (CPAP), in addition to those on ventilators. RLF-100 (Aviptadil) is a patented formulation of synthetic human Vasoactive Intestinal Peptide (VIP), which has been granted Orphan Drug Designation by the US FDA in Acute Respiratory Distress Syndrome and chronic lung diseases.