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NCT ID: NCT05016934 Withdrawn - Covid19 Clinical Trials

Evaluation of Safety and Immunogenicity of a Novel Vaccine for Prevention of Covid-19 in Adults Previously Immunized

Start date: November 1, 2021
Phase: Phase 1/Phase 2
Study type: Interventional

Randomized controlled trial to evaluate safety, immunogenicity and efficacy of three different doses (10, 25 and 50 mcg) of a novel vaccine compared with placebo in adult volunteers previously immunized against Covid-19 with other vaccines [Corona Vac (Sinovac), ChAdOx1 (AZ 1222, Astra Zeneca) or Ad26.Co2.S (Janssen)].

NCT ID: NCT04950751 Withdrawn - COVID-19 Clinical Trials

Immunogenicity and Safety of Adjuvanted SCB-2020S Vaccines in Adults

Start date: August 2021
Phase: Phase 2
Study type: Interventional

This is a phase 2, randomized, controlled, observer-blind study to evaluate the immunogenicity and safety of different formulations of the investigational adjuvanted recombinant SARS-CoV-2 trimeric S-protein (from B.1.351 variant) subunit vaccine (SCB-2020S), when administered as 2-dose vaccination series 21 days apart to adults ≥ 18 years of age.

NCT ID: NCT04946162 Withdrawn - COVID Clinical Trials

The Use of Tadalafil in Confirmed COVID-19 Pneumonia.

Start date: April 20, 2020
Phase: Phase 4
Study type: Interventional

Our goal is to assess the effects of Tadalafil in the setting of confirmed COVID-19 pneumonia. In particular we plan to assess its effects on oxygen saturation, P:F ratio, and mixed central venous oxygen We plan to recruit all hospitalized patients at Santa Barbara Cottage Hospital with a confirmed COVID19 pneumonia (positive PCR + clinical signs/symptoms of lower respiratory disease) who meet the Berlin definition of ARDS and have access to measure a mixed venous oxygen saturation. For the purposes of obtaining mixed central venous oxygen, all participating patients will already have an internal jugular central venous catheter in place for inclusion in this study. Since all patients will be intubated, their Legally Authorized Representative (LAR) will be approached to discuss the study and asked to participate in the study by an ICU physician, either the attending physician or a medical resident. Informed consent will be obtained from the LAR by an ICU attending physician or resident involved in the study prior to participation. Patients who meet the above eligibility criteria will have baseline levels of mixed central venous oxygen, oxygen saturation, P:F ratio, blood pressure and PaO2 recorded. Each patient will then receive Tadalafil 40mg once. The above listed parameters will be monitored again 30 minutes after drug administration and 4 hours after drug administration. No other medication or ventilator changes will be made during this time period outside of emergent changes in the setting of patient deterioration. We will continue to analyze the data in the event of emergent ventilator changes.

NCT ID: NCT04909892 Withdrawn - Covid19 Clinical Trials

Study of Allogeneic Adipose-Derived Mesenchymal Stem Cells to Treat Post COVID-19 "Long Haul" Pulmonary Compromise

Start date: August 2021
Phase: Phase 2
Study type: Interventional

This is a Phase 1b study to assess the safety and efficacy of COVI-MSC in treating post COVID-19 "long haulers" with pulmonary compromise.

NCT ID: NCT04896970 Withdrawn - SARS-CoV-2 Clinical Trials

Risk of SARS-CoV-2 Infection (COVID-19) in a Standing Concert in a Closed Performance Hall

ConcerTest
Start date: June 2021
Phase: N/A
Study type: Interventional

The investigators want to compare the SARS-CoV-2 incidence 7 days after having been screened negative, between two groups of adults randomized to either go to a concert or not. Participants will be screened via a rapid saliva test a few hours before the show. The hypothesis is that attending a standing concert in respect of safety precaution doesn't increase the risk of SARS-CoV-2 infection.

NCT ID: NCT04894474 Withdrawn - COVID-19 Clinical Trials

A Study to Test Whether BI 767551 Can Prevent COVID-19 in People Who Have Been Exposed to SARS-CoV-2

Start date: July 13, 2021
Phase: Phase 2/Phase 3
Study type: Interventional

This study is open to adults living with a person who has tested positive for the coronavirus SARS-CoV-2. People who do not have symptoms of COVID-19 can take part in this study. The study is done to find out whether a medicine called BI 767551 can prevent COVID-19. BI 767551 is an antibody against the coronavirus SARS-CoV-2. Participants are put into 3 groups randomly, which means by chance. - 1 group gets BI 767551 via an inhaler and placebo as an infusion - 1 group gets BI 767551 as an infusion and placebo via an inhaler - 1 group gets placebo both via an inhaler and as an infusion All participants get study medicine once at study start and after 1 week. Placebo inhaler and infusion look like BI 767551 inhaler and infusion but do not contain any medicine. Participants are in the study for about 3 months. During this time, they visit the study site about 10 times. About 7 of the 10 visits can be done at the participant's home. Participants are regularly tested for the coronavirus SARS-CoV-2. The doctors check whether the participants have been infected with the coronavirus and whether they have symptoms. The results are compared between the treatment groups. The doctors check the health of the participants and note any health problems that could have been caused by BI 767551.

NCT ID: NCT04858620 Withdrawn - Covid19 Clinical Trials

A Study to Evaluate the Efficacy of Xlear vs. Placebo for Acute COVID-19 Infection

Start date: August 30, 2020
Phase: Phase 3
Study type: Interventional

This study aims to find out the efficacy of Xlear nasal spray as an adjunct medication against COVID-19. This encompasses reduction in the number of days to negativization via nasal swab PCR from the average 14 days and early improvement of symptoms.

NCT ID: NCT04854876 Withdrawn - Covid19 Clinical Trials

Pilot Study to Evaluate the Safety, Tolerability, and Efficacy of 5-ALA-Phosphate + SFC as an Immune System Enhancer Along With Vaccination Against COVID-19

Start date: August 15, 2021
Phase: N/A
Study type: Interventional

This is an open-label, two arm interventional exploratory study to evaluate the safety and efficacy of 5-ALA-Phosphate-SFC during the vaccination of subjects against SARS-CoV-2 (COVID-19) virus infection to define the safety and to activate the immune system during SARS-CoV-2 vaccination. The primary objective of this study is to determine the safety of a 4 week daily oral administration of 5-ALA-Phosphate + SFC in subjects vaccinated with COVID-19 Vaccine

NCT ID: NCT04848467 Withdrawn - Clinical trials for SARS-CoV-2 Infection

COVID-19: A Trial Studying the SARS-CoV-2 mRNA Vaccine CVnCoV to Learn About the Immune Response, the Safety, and the Degree of Typical Vaccination Reactions When CVnCoV is Given at the Same Time as a Flu Vaccine Compared to When the Vaccines Are Separately Given in Adults 60 Years of Age and Older

CV-NCOV-011
Start date: October 1, 2021
Phase: Phase 3
Study type: Interventional

The most recently discovered coronavirus (SARS-CoV-2) may cause illness in humans ranging from the common cold to serious illness, also referred to as Coronavirus disease 2019 (COVID-19). As of January 2021, there are only few authorized vaccines available for the prevention of COVID-19. "CVnCoV" is a new SARS-CoV-2 messenger ribonucleic acid (mRNA) vaccine which is currently being developed for the prevention of COVID-19. The vaccine contains a molecule called mRNA which serves as an instruction manual for the cells in the body to produce a piece of protein from SARS-CoV-2 which activates the body´s defense system. The "CVnCoV" vaccine is injected into the muscle. After the injection, the body recognizes the protein as something that does not belong there. In this way the natural infection with the virus is imitated. The body activates immune cells to produce antibodies against the virus and creates specific immune cells called T cells. "CVnCoV" is given in two doses separated by 28 days. In this study, the researchers will look at how well "CVnCoV" works when the first of the two doses is given together with a flu vaccine called seasonal quadrivalent influenza vaccine (QIV). They will also look at how well the flu vaccine works under these conditions. The QIV is injected into the muscle and is given as 1 dose. To see how well the participants' immune systems is activated by "CVnCoV" and QIV, the researches will measure the levels of specific antibodies against the viruses in the blood. Antibodies are proteins that allow the immune system to find and react to bacteria and viruses in the body. The researches will look into how safe the vaccination is and which type and degree of typical vaccination reactions are seen. To give "CVnCoV" and the flu vaccine together in the future when needed, e.g. during the flu season, would reduce the burden on the health system and on the patients. Participants in this study are adults aged 60 years and older. In this study, participants are assigned to one of the two parallel groups of the same size. The assignment to either group is done by chance via a computer program. Participants in group 1 (Co-ad group) will receive CVnCoV at the same visit as QIV. Participants in group 2 (control group) will receive QIV and CVnCoV at two different visits. The Co-ad group will receive the first dose of CVnCoV and a dose of QIV in opposite arms at Day 1, the second dose of CVnCoV at Day 29, and a placebo injection, i.e. an injection that looks like a vaccination injection but does not contain vaccine, at Day 57. The control group will receive QIV and placebo in opposite arms at Day 1, the first dose of CVnCoV at day 29 and the second dose of CVnCoV at Day 57. There will be five visits and four phone calls. During the study, the study team will take blood samples on four occasions to measure the antibodies against SARS-CoV-2, and nasopharyngeal swabs at 1 occasion. The physicians will do physical examinations at each visit. The participants will be asked how they are feeling and if they have any medical problems. They will, in addition, receive an electronic Diary to report medical problems.

NCT ID: NCT04838847 Withdrawn - Covid19 Clinical Trials

A Study to Evaluate the Immunogenicity and Safety of the SARS-CoV-2 mRNA Vaccine CVnCoV in Elderly Adults Compared to Younger Adults for COVID-19

Start date: October 1, 2021
Phase: Phase 3
Study type: Interventional

The primary objective of this study is to evaluate the humoral immune response to CVnCoV in elderly adults aged ≥65 years and younger adults aged 18-45 years, 14 days after the second dose administration.