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58 active trials for Pneumonia, Viral

Colchicine Counteracting Inflammation in COVID-19 Pneumonia

Cytokines and chemokines are thought to play an important role in immunity and immunopathology during virus infections [3]. Patients with severe COVID-19 have higher serum levels of pro-inflammatory cytokines (TNF-?, IL-1 and IL-6) and chemokines (IL-8) compared to individuals with mild disease or healthy controls, similar to patients with SARS or MERS . The change of laboratory parameters, including elevated serum cytokine, chemokine levels, and increased NLR in infected patients are correlated with the severity of the disease and adverse outcome, suggesting a possible role for hyper-inflammatory responses in COVID-19 pathogenesis. Importantly, previous studies showed that viroporin E, a component of SARS-associated coronavirus (SARS-CoV), forms Ca2C-permeable ion channels and activates the NLRP3 inflammasome. In addition, another viroporin 3a was found to induce NLRP3 inflammasome activation . The mechanisms are unclear. Colchicine, an old drug used in auto-inflammatory disorders (i.e., Familiar Mediterranean Fever and Bechet disease) and in gout, counteracts the assembly of the NLRP3 inflammasome, thereby reducing the release of IL-1b and an array of other interleukins, including IL-6, that are formed in response to danger signals. Recently, colchicine has been successfully used in two cases of life-threatening post-transplant capillary leak syndrome. These patients had required mechanically ventilation for weeks and hemodialysis, before receiving colchicine, which abruptly restored normal respiratory function and diuresis over 48 hrs [4].

Start: April 2020
Convalescent Antibodies Infusion in COVID 19 Patients

The outbreak of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which originated in Wuhan, China, has become a major concern all over the world. Convalescent plasma or immunoglobulins have been used as a last resort to improve the survival rate of patients with SARS whose condition continued to deteriorate despite treatment with pulsed methylprednisolone. Moreover, several studies showed a shorter hospital stay and lower mortality in patients treated with convalescent plasma than those who were not treated with convalescent plasma. Evidence shows that convalescent plasma from patients who have recovered from viral infections can be used effectively as a treatment of patients with active disease. The use of solutions enriched of antiviral antibodies has several important advantages over the convalescent plasma including the high level of neutralizing antibodies supplied. Moreover, plasma-exchange is expensive and requires large volumes of substitution fluid With either albumin or fresh frozen plasma, increasing the risk of cardiovascular instability in the plasma donor and in the recipient, which can be detrimental in a critically ill patient with COVID 19 pneumonia. The use of plasma as a substitution fluid further increases treatment costs and is associated with risk of infections, allergic reactions and citrate-induced hypocalcemia. Albumin is better tolerated and less expensive, but exchanges using albumin solutions increase the risk of bleeding because of progressive coagulation factor depletion. The aforementioned limitations of plasma therapy can be in part overcome by using selective apheresis methods, such as double-filtration plasmapheresis (DFPP)3. During DFPP, plasma is separated from cellular components by a plasma filter, and is then allowed to pass through a fractionator filter. Depending on the membrane cut-off, the fractionator filter retains larger molecules and returns fluid along with smaller molecules to the circulation. Thus, the selection of a membrane with an appropriate sieving coefficient for IgG allows to efficiently clear autoantibodies in patients with antibody-mediated diseases (e.g., macroglobulinemia, myasthenia gravis and rheumatoid arthritis) with negligible fluid losses and limited removal of albumin and coagulation factors1. In patients with severe membranous nephropathy and high titer of autoreactive, nephritogenic antibodies against the podocyte-expressed M type phospholipase A2 receptor (PLA2R), DFPP accelerated anti PLA2R depletion4. Measurement of the antibody titer in treated patient and recovered fluid showed that antibody removal was extremely effective and that large part of antibodies was removed during the first DFPP procedure. This therapeutic regimen was safe and well tolerated and easy to apply4. In an ongoing pilot study we found that the same methodological approach can be used to remove circulating antibodies from patients who recovered from COVID 19 and to infuse these antibodies in patients with active viral infection. Treatment was well tolerated and preliminary findings are encouraging. Thus, in this novel pilot study we aim to explore whether the infusion of antibodies obtained with one single DFPP procedure from voluntary convalescent donors could offer an effective and safe therapeutic option for patients with earlier stages of coronavirus (COVID-19) pneumonia requiring oxygen supply without mechanical ventilation.

Start: June 2020
COVID-19, bLOod Coagulation and Thrombosis

Coronavirus 2 (SARS-CoV2) has been identified as the pathogen responsible for severe acute respiratory syndrome associated with severe inflammatory syndrome and pneumonia (COVID-19). Haemostasis abnormalities have been shown to be associated with a poor prognosis in these patients with this pneumonia. In a Chinese series of 183 patients, the hemostasis balance including thrombin time, fibrinogenemia, fibrin degradation products and antithrombin III were within normal limits. Only the D-Dimer assay was positive in the whole cohort with an average rate of 0.66 µg / mL (normal <50 µg / mL). These hemostasis parameters were abnormal mainly in patients who died during their management; the levels of D-dimers and fibrin degradation products were significantly higher while the antithrombin III was reduced. The findings on the particular elevation of D-dimers in deceased patients as well as the significant increase in thrombin time were also reported in another series. Higher numbers of pulmonary embolisms have been reported in patients with severe form of SARS-COV2 (data in press). This research is based on the hypothesis that the existence of deep vein thrombosis (DVT) could make it possible to screen patients at risk of pulmonary embolism and to set up a curative anticoagulation. The main objective is to describe the prevalence of deep vein thrombosis in patients hospitalized in intensive care for acute respiratory failure linked to documented SARS-COV2 pneumonia, within 24 hours of their admission.

Start: May 2020
Clinical Characteristics and Outcomes of Pediatric COVID-19

Rationale: The clinical manifestations of SARS-CoV-2 infection in children are poorly characterized. Preliminary findings indicate that they may be atypical. There is a need to identify the spectrum of clinical presentations, predictors of severe disease (COVID-19) outcomes, and successful treatment strategies in this population. Goals: Primary - Describe and compare characteristics of confirmed SARS-CoV-2 infected children with symptomatic test-negative children. Secondary - 1) Describe and compare confirmed SARS-CoV-2 infected children with mild versus severe COVID-19 outcomes; 2) Describe healthcare resource utilization for, and outcomes of, screening and care of pediatric COVID-19 internationally, alongside regional public health policy changes. Methods: This prospective observational study will occur in 50 emergency departments across 11 countries. We will enroll 12,500 children who meet institutional screening guidelines and undergo SARS-CoV-2 testing. Data collection focuses on epidemiological risk factors, demographics, signs, symptoms, interventions, laboratory testing, imaging, and outcomes. Collection will occur at enrollment, 14 days, and 90 days. Timeline: Recruitment will last for 12 months (worst-case model) and will begin within 7-14 days of funding notification after ongoing expedited review of ethics and data sharing agreements. Impact: Results will be shared in real-time with key policymakers, enabling rapid evidence-based adaptations to pediatric case screening and management.

Start: March 2020