Masitinib Combined With Isoquercetin and Best Supportive Care in Hospitalized Patients With Moderate and Severe COVID-19

Study objective is to evaluate the efficacy of the combination of masitinib and isoquercetin in adult hospitalized patients with moderate and severe COVID-19.

COVID-19 is a respiratory disease caused by a novel coronavirus (SARS-CoV-2) that is associated with substantial morbidity and mortality. There is currently no vaccine to prevent COVID-19 or infection with SARS-CoV-2 or therapeutic agent to treat COVID-19. Many patients with moderate and severe COVID-19, develop a "cytokine storm" that leads to severe pulmonary inflammation and various thrombotic events associated with acute respiratory distress syndrome (ARDS) and potentially death. The combination of masitinib and isoquercetin may prevent the development of these two complications. Masitinib is a potent blocker of mast cells and macrophages that are contributors to the cytokine storm. Isoquercetin inhibits disulfide isomerase (PDI), an enzyme directly involved in the formation of clots, and also decreases D-Dimer, a predictor of COVID-19 thrombosis severity. The primary objective of this study is to evaluate efficacy of the masitinib and isoquercetin combination in moderate and severe COVID-19 patients. The primary endpoint is subject clinical status at day 15, using a 7-point ordinal scale that is defined as follows: 1. Not hospitalized, no limitations on activities; 2.Not hospitalized, limitation on activities; 3. Hospitalized, not requiring supplemental oxygen; 4. Hospitalized, requiring supplemental oxygen; 5. Hospitalized, on non-invasive ventilation or high flow oxygen devices; 6. Hospitalized, on invasive mechanical ventilation or ECMO; 7. Death.