COVID-19 Clinical Trials and Expanded Access

The objectives of PROVIDE are to: 1. Determine if prophylactic once weekly hydroxychloroquine reduces the incidence of conversion from SARS-2-CoVnasopharyngeal swab negative to positive 2. To determine if weekly prophylactic hydroxychloroquine reduced the severity of COVID-19 symptoms 3. To determine the safety of taking weekly prophylactic hydroxychloroquine

No optimal antiviral intervention has been yet validated to treat COVID-19 disease. Comorbidities, such as older age, obesity, diabetes, history of cardiovascular diseases are associated with poor prognosis. This study aims to evaluate the efficacy of two experimental antiviral treatments, compared to standard of care (SOC), to prevent clinical worsening, hospitalization or death at day 14 in adults with documented SARS-CoV-2 infection, asymptomatic or with symptoms lasting less than 8 days, and associated comorbidities without any severity criteria of the disease at inclusion. Participants will be randomized to receive SOC alone or SOC + hydroxychloroquine 200 mg three times a day during 10 days or SOC + association of niclosamide 2 g at J1 then 500 mg two times a day with diltiazem 60 mg three times a day during 10 days. Efficacy and tolerance of each treatments will be compared across the three treatment groups during the 28 days of follow-up.

The aim of the study is to compare a treatment with doxycycline vs a placebo as soon as the patient is confirmed COVID-19 + and before the onset of oxygen dependence with the aim of reducing or even abolishing the cytokine explosion and thus the evolution towards a serious form of the disease which can lead to death. Three criteria support the rational use of tetrcycline in COVI-19 (1) The coronaviruses is known to bind to metalloproteases (MMPs) of the host, in particular to ensure viral survival. Tetracyclines are known to chelate zinc from MMPs. Their chelating activity may help inhibit COVID19 infection by limiting its ability to replicate in the host. (2) Tetracyclines may also be able to inhibit the replication of positive-polarity single-stranded RNA viruses, such as COVID19 (demonstrated on the dengue virus). (3) In addition, tetracyclines are modulators of innate immunity (anti-inflammatory activity), a property used in the treatment of inflammatory skin diseases for many years. These modulating effects are noted on several targets of innate immunity: They can decrease the expression of NFKB, the release of inflammatory cytokines such as TNF-α, IL-1β and IL-6, inhibit granulomas inflammatory and free radical release. Tetracyclines could therefore participate in limiting the cytokine release induced by COVID19. Their lipophilic nature and their strong pulmonary penetration could allow them to inhibit viral replication.

Hydroxychloroquine, a derivative of chloroquine (an antimalarial drug) with a weak immunosuppressive effect, is prescribed by some teams alone or in combination with azithromycin. No randomized controlled trials have demonstrated its efficacy, particularly in primary care in the early stages of the disease. However, currently available data suggest better efficacy if treatment is given early in the disease, before symptoms worsen. To date, the majority of COVID-19 patients treated in outpatient care, particularly in general practice, represent the majority of COVID-19 patients. It is essential to evaluate, in primary care, the efficacy and safety of hydroxychloroquine combined with azithromycin in Covid-19 patients in order to be able to implement this therapeutic strategy as soon as the first symptoms appear. We realize a randomized, controlled, open superiority trial, in 2 parallel groups (ratio 1:1).The main objective is to assess the efficacy of Hydroxychloroquine combined with azithromycin in COVID-19 patients in primary care, in add-on to standard of care, on unfavorable outcome defined by the onset of at least one of the following between D0 and D14: hospitalization, death or percutaneous O² saturation ≤ 92% in ambient air.

Efficacy of Sunlight Activated Synthetic Porphyrin in COVID-19 Infected Patients (SnPPIX) Mahmoud ELkazzaz(1),Rokia yousry abdelaziz sallam(2) _____________________________________________________________________________________________ _________________________________________________________________________ Abstract : The novel coronavirus pneumonia (COVID-19) is an infectious acute respiratory caused by the novel coronavirus. The virus is a positive-strand RNA virus with high homology to bat coronavirus. Depending on published study in which , conserved domain analysis, homology modeling, and molecular docking were used to compare the biological roles of specific proteins of the novel coronavirus. The principal investigator demonstrated according to previous researches that some viral structural and nonstructural proteins could bind to the porphyrin, respectively. At the same time, orf1ab, ORF10 and ORF3a proteins coordinated to attack heme on the 1-beta chain of hemoglobin, COVID-19 binds to the porphyrin of haem and displaces iron and a study denonestrated that Covid-19 could cause acquired acute porphyria which is the condition in which there is excess accumulation of porphyrin intermediate metabolites. This point can be taken advantage of X-ray induced visible luminescence of porphyrin for producing of Reactive Oxygen Species (ROS).Many porphyrins are benign in the dark but are transformed by sunlight into caustic, flesh-eating toxins Porphyrins have been used for photodynamic therapy (PDT) against a wide range of targets like bacteria, viruses and tumor cells It has been reported that ROS-based inactivation of viruses may occur due to several reasons, such as protein oxidation, single strand breaks in the RNA genome and protein-RNA crosslinking. Since ROS-based inactivation has a multi-targeted mechanism, it is much less likely that a virus would be able to develop resistance against it. Recently, porphyrins, already in use as photosensitizers for Photodynamic Therapy (PDT), were a study target to applications in medical area, namely as possible contrast agents in MRI. could be observed some examples of porphyrin derivatives already study as MRI contrast media. Low dark toxicity, neoplastic tissue affinity and synthetic accessibility are some of the important properties that contribute for its selection. In MRI studies was found that CM based on paramagnetic metalloporphyrins showed higher affinity for neoplastic tissues, observed by increased relaxation time of the neoplastic tissues, which is reflected on an increase in MRI signal and consequently in a better neoplastic lesions detection. A study demonestrated that The sulfonated tetranaphthyl porphyrin contrast agents in MRI (TNapPS), sulfonated tetra-anthracenyl porphyrin (TAnthPS), and sulfonated 2,6-difluoro-meso-tetraphenylporphine [TPP(2,6-F2)S] and its copper chelate [TPP(2,6-F2)S,Cu], which reduced HIV infection by 99, 96, 94, and 96%, respectively. Previous studies which showed that Covid -19 binds to the porphyrin of haem and displaces iron in addition to Sulfonated porphyrins and light-stimulated Sn- protoporphyrin IX have broad antiviral activity against more distinct types of viruses, Co-protoporphyrin IX and Sn-protoporphyrin IX inactivate Zika, Chikungunya and other arboviruses by targeting the viral envelope Porphyrins are amphipathic molecules able to interact with membranes and absorb light, being widely used in photodynamic therapy. Previously, we showed that heme, Co-protoporphyrin IX (CoPPIX) and Sn-protoporphyrin IX (SnPPIX) directly inactivate DENV and YFV infectious particles. Here we demonstrate that the antiviral activity of these porphyrins can be broadened to CHIKV, ZIKV, Mayaro virus, Sindb is virus and Vesicular Stomatitis virus. Porphyrin treatment causes viral envelope protein loss, affecting viral morphology, adsorption and entry into target cells , Finally, the principal investigator expect that viral load will be declined with sunlight because In particular, porphyrins absorb essentially all the UV/visible light wavelengths in the emission spectrum of the sun; hence they are active at very low doses . Keywords: COVID 2019 ,Infection, Sulfonated porphyrins and X-ray induced visible luminescence of porphyrin

Few studies have reported the efficacy of HCQ in reducing the viral load and improving the severity of symptoms in hospitalized COVID-19 cases with serious respiratory infection. However, the prophylactic benefits of HCQ has not been clearly defined yet.

On January 9, 2020, a new emerging virus was identified by WHO as being responsible for grouped cases of pneumonia in China. It is a coronavirus, SARS-CoV-2, responsible for the disease COVID-19 (Coronavirus disease). The disease is mild in 85% of cases but the proportion of serious cases requiring hospitalization or intensive care (15%) puts stress on health structures and systems around the world. To limit the influx of patients and avoid overstretching Health systems, containment and social distancing strategies are widely adopted. It appears crucial to propose the easiest possible therapeutic strategy taking into account the ambulatory nature of the patients. Therefore azithromycin (AZM) is an antibiotic known to have an antiviral effect but also which has anti-inflammatory activity in addition to its antimicrobial effect. Azithromycin targets preferentially pulmonary cells (and particularly of the lines apparently affected in COVID-19 positive cases). The aim of this study is to demonstrate that AZM decreases symptom duration in COVID19 patients and diminishes the viral carriage.

The fight against the spread of the 2019-nCoV epidemic has achieved some success in China, but the epidemic is far from over. A key factor making the epidemic under control in China is the government's call for social distance, which has led to few people going out for donation. As a result, the number of blood donors on the streets has been continuing to decline. Urgent recruitment of blood donors is therefore planned during the period from 30 April to 10 May via emergency recruitment SMS . This study has been designed to compare which information extraction frameworks would be more sensitive to blood donors in emergency situations.

Main goal: To generate information on the efficacy and safety of Dialyzable Leukocyte Extract (DLE) as an aid in the treatment of patients with acute respiratory infection (suspected or confirmed cases of COVID-19). Primary goal: To generate information on the efficacy of DLE as an aid in symptomatic treatment, by reducing the signs and symptoms of acute respiratory infection (suspected/confirmed cases of COVID-19). Secondary goals: 1. To evaluate clinical deterioration and respiratory alarm data. 2. To evaluate the duration of the clinical picture. 3. To explore cytokine changes associated with the therapeutic effect induced by DLE. 4. To obtain data on the safety of DLE as an aid in the symptomatic treatment of acute respiratory infection (suspected/confirmed cases of COVID-19). 5. To generate information to validate the contingency scale to assess the severity of acute respiratory disease (suspected/confirmed cases of COVID-19). Justification The systemic inflammatory response has been recognized as being responsible for COVID-19 complications. Immunomodulation strategies to control it are currently being considered, including the use of systemic steroids to down-regulate the systemic inflammatory response, the use of human immunoglobulin and even chloroquine given its anti-inflammatory and antiviral qualities; however, none of these treatments has been sufficiently studied or has shown any significant change in the clinical course of infected patients. Due to the importance of the COVID-19 pandemic and in the absence of specific treatment, it is important to implement new treatments that allow modulating the immune response, and one strategy may be the addition of DLE to symptomatic and supportive treatment. Hypotheses by goals. 1. The addition of DLE to the symptomatic treatment could decrease the severity of the clinical outcome (signs and symptoms) in individuals with an acute respiratory infection (cases suspected/confirmed by COVID-19). 2. The addition of DLE to the symptomatic treatment could decrease the clinical deterioration due to the acute respiratory infectious process (suspected/confirmed cases of COVID-19). 3. The addition of DLE to the symptomatic treatment could decrease the duration of the clinical outcome (suspected/confirmed cases of COVID-19).

According to the data of February 2020, in Turkey with a population of 83.9 million, internet and social media usage percentage to population are 74% and 64% respectively. Although previous researches have investigated the effect of social media on different medical situations, there is no study focused role of social media on patients' behavior and information source during the COVID-19 pandemic. In the present study, it is aimed to reveal the impact of social media on patients' attitudes and information sources during the COVID-19 pandemic.