COVID-19 Clinical Trials and Expanded Access

A new human coronavirus responsible for pneumonia, SARS-CoV-2, emerged in China in December 2019 and has spread rapidly. COVID-19, the disease caused by this virus, has a very polymorphous clinical presentation, which ranges from upper respiratory tract infections to acute respiratory distress syndrome. It may appear serious straightaway or may evolve in two stages, with a worsening 7 to 10 days after the first clinical signs, potentially linked to a cytokine storm and accompanied by a high risk of thrombosis. The global mortality rate of COVID-19 is between 3% and 4%, with severe forms being more frequent among older patients. Management is symptomatic as no antiviral treatment has demonstrated any clinical benefit in this condition. Hydroxychloroquine is a derivative of chloroquine commonly used in some autoimmune diseases, such as systemic lupus erythematosus. It is active in vitro in cellular models of infection by many viruses such as HIV, hepatitis C or SARS-CoV. However, its interest in viral infections in humans has not been demonstrated. Very recently, a preliminary uncontrolled study evaluated the effect of hydroxychloroquine on viral shedding in subjects with COVID-19. Among 20 patients treated with hydroxychloroquine at a dose of 600 mg per day, the percentage of patients with detectable SARS-CoV-2 RNA in the nasopharynx decreased from 100% at inclusion (start of treatment) to 43% six days later. In comparison, 15 of 16 untreated patients had a positive RT-PCR six days after inclusion. Furthermore, hydroxychloroquine has immunomodulating and anti-inflammatory properties, which could theoretically prevent or limit secondary worsening. The research hypothesis is that treatment with hydroxychloroquine improves prognosis and reduces the risk of death or use for invasive ventilation in patients with COVID-19.

Based on data regarding the effect of colchicine on the inflammasome NLP3 and microtubule formation and associations thereof with the pathogenetic cycle of SARS-COV-2, the question arises whether colchicine, administered in a relatively low dose, could potentially have an effect the patients' clinical course by limiting the myocardial necrosis and pneumonia development in the context of COVID-19. If present, this effect would be attributed to its potential to inhibit inflammasome and (less probably) to the process of SARS-CoV-2 endocytosis in myocardial and endothelial respiratory cells.

The symptoms of respiratory distress caused by COVID-19 may be reduced by drugs combining anti-inflammatory and antiviral effects. This dual effect may simultaneously protect severely-ill patients and reduce the viral load, therefore limiting virus dissemination We want to demonstrate the superiority of naproxen (anti-inflamatory drug) treatment addition to standard of care compared to standard of care in term of 30-day mortality.

ACT is a randomized clinical trial to assess therapies to reduce the clinical progression of COVID-19.

Background: There are no proven therapies specific for Covid-19. The full spectrum of Covid-19 ranges from asymptomatic disease to mild respiratory tract illness to severe pneumonia, acute respiratory distress syndrome (ARDS), multiorgan failure, and death. The efficacy of corticosteroids in viral ARDS remains controversial. Methods: This is an internationally (Spain, Canada, China, USA) designed multicenter, randomized, controlled, open-label clinical trial testing dexamethasone in mechanically ventilated adult patients with established moderate-to-severe ARDS caused by confirmed Covid-19 infection, admitted in a network of Spanish ICUs. Eligible patients will be randomly assigned to receive either dexamethasone plus standard intensive care, or standard intensive care alone. Patients in the dexamethasone group will receive an intravenous dose of 20 mg once daily from day 1 to day 5, followed by 10 mg once daily from day 6 to day 10. The primary outcome is 60-day mortality. The secondary outcome is the number of ventilator-free days at 28 days. All analyses will be done according to the intention-to-treat principle.

A phase I/II single-blinded, randomised, multi-centre study to determine efficacy, safety and immunogenicity of the candidate Coronavirus Disease (COVID-19) vaccine ChAdOx1 nCoV-19 in UK healthy adult volunteers aged 18-55 years. The vaccine will be administered intramuscularly (IM) into the deltoid region of the arm

PRIORITY (Pregnancy CoRonavIrus Outcomes RegIsTrY) is a prospective cohort study of pregnant and recently pregnant women who are: either patients under investigation for COVID-19 or a confirmed case of COVID-19. Data from PRIORITY will be used to evaluate the impact of COVID-19 on the clinical course and pregnancy outcomes of pregnant women and women within 6 weeks of pregnancy.

Hyper-inflammation, caused by a cytokine storm resulting from an exaggerated response of the immune system in the presence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), is considered to represent one of the most important negative prognostic factors in patients infected with sSARS-CoV-2. The objective of this study is to investigate new treatment options to reduce the number of patients requiring mechanical ventilation. This is intended to address the most urgent need to preserve the access to intensive care unit support to the lowest possible number of patients and may potentially reduce mortality.

Coronavirus disease 2019 (COVID-19) is caused by the newly discovered coronavirus, SARS-CoV-2. The median time from onset of symptoms of COVID-19 to development of acute respiratory distress syndrome (ARDS) has been reported as short as 9 days. No effective prophylactic or post-exposure therapy is currently available. According to data from the Danish Health Authority (www.sst.dk/corona), as of March 21st, 2020, there were 1326 patients infected with the disease in Denmark, more than 250 are admitted to a hospital, and >50 of them have required intensive care. Nearly 350.000 cases and 15.000 deaths have been reported globally. These numbers are likely to markedly increase during the coming weeks, challenging the capacity of health systems worldwide. In patients infected with SARS-CoV-2, it has been described that disease severity and outcomes are related to the characteristics of the immune response. Interleukin (IL)-6 and other components of the inflammatory cascade contribute to host defense against infections. However, exaggerated synthesis of IL-6 can lead to an acute severe systemic inflammatory response known as 'cytokine storm'. In the pathogenesis of SARS-CoV-2 pneumonia, a study found that a cytokine storm involving a considerable release of proinflammatory cytokines occurred, including IL-6, IL-12, and tumor necrosis factor α (TNF-α). Studies on the Middle East respiratory syndrome caused by another coronavirus (MERS-CoV), indicate that cytokine genes of IL-6, IL-1β, and IL-8 can be markedly upregulated. Similarly, patients with SARS-CoV-2 pneumonia admitted to an intensive care unit had higher plasma levels of cytokines including IL-6, IL-2, IL-7, IL-10, granulocyte-colony stimulating factor (G-CSF), interferon-γ-inducible protein (IP10), monocyte chemoattractant protein (MCP1), macrophage inflammatory protein 1 alpha (MIP1A), and TNF-α. These findings indicate that the magnitude and characteristics of the cytokine response is related to the severity and prognosis of patients with SARS-CoV-2 pneumonia. It has been suggested that IL-6 blockade may constitute a novel therapeutic strategy for other types of cytokine storm, such as the systemic inflammatory response syndrome including sepsis, macrophage activation syndrome and hemophagocytic lymphohistiocytosis. Remarkable beneficial effects of IL-6 blockade therapy using a IL-6 receptor inhibitor has been described in patients with severe SARS-CoV-2 pneumonia in a retrospective case series from China. Currently, there are two available drugs based on human monoclonal antibodies against IL-6 receptor, tocilizumab (RoActemra, Roche) and sarilumab (Kevzara, Sanofi). IL-6 receptor inhibitors are currently licensed for several autoimmune disorders and are considered well tolerated and safe in general. The most common side effects reported are upper respiratory tract infections, headache, hypertension, and abnormal liver function tests. The most serious side effects are serious infections, complications of diverticulitis, and hypersensitivity reactions. it is hypothesized that IL-6 might play a key role in the cytokine storm associated with serious adverse outcomes in patients infected with SARS-CoV-2 pneumonia, and that blockade of IL-6 would be suitable therapeutic target for these patients. The study will investigate the effect of different types of IL-6 inhibition versus no adjuvant treatment compared to standard of care in patients with severe SARS-CoV-2 pneumonia. Primary objective: To compare the effect of either one of three IL-6 inhibitor administrations, relative to the standard of care, on time to independence from supplementary oxygen therapy, measured in days from baseline to day 28, in patients with severe SARS-CoV-2 pneumonia.

This is a phase 3, randomized, double-blind, placebo-controlled multicenter study to evaluate the efficacy and safety of colchicine in adult patients diagnosed with COVID-19 infection and have at least one high-risk criterion. Approximately 6000 subjects meeting all inclusion and no exclusion criteria will be randomized to receive either colchicine or placebo tablets for 30 days.