13 Clinical Trials for Various Conditions
This is an observational study aiming at describing COVID-19 vaccination outcomes among HIV-positive and HIV-negative individuals, using electronic health records to observe their usual clinical care. This study will describe levels of COVID-19 vaccine response (i.e., Ig spike antibody measurements). Rates of antibody level decay after vaccination will be assessed. The efficacy of using antibody levels to help guide the timing of booster doses among HIV-negative and HIV-positive patients will be evaluated.
Background: - Influenza is a common viral infection, but it can be deadly for some people. Researchers want to learn more about how the body fights this virus. They want to study this in people who have recently been infected with influenza. They hope this can help them create more effective influenza vaccines. Objective: - To learn about long-term changes in the body s immune system after influenza infection. Eligibility: - People who have completed a previous LID Clinical Studies Unit influenza challenge study or current or prior participation in an LID natural history study and are willing to have samples stored for future research. Design: * Eligible participants will be asked to visit the clinic every 3 months for 2 years. * During each visit, participants will have blood drawn from an arm vein using a needle and a syringe and a nasal sample. * Participants will have a medical history and physical exam and vital signs performed. This will include blood pressure, heart rate, breathing rate, temperature, weight, and finger-measured blood oxygen. They will answer questions about any medicines taken and possible recent illnesses. * If participants have symptoms of influenza, they may have an additional sample taken from the nose. * Participants will complete a health questionnaire once a month on a secure website. Participants may also give their responses over the telephone.
To determine the persistence of protective antibody levels for subjects who seroconverted after vaccination with NmVac4-A/C/Y/W-135-DT™ Participants in trial # JN-NM-002, who seroconverted for serogroups A and C will be contacted and asked to provide a blood sample at 12-24 months after vaccination with NmVac4-A/C/Y/W-135-DT. Serum Bactericidal Assays will be performed to evaluated duration of protective antibody titer for NmVac4-A/C/Y/W-135-DT for all four serogroups. To determine if subjects who seroconverted with lower titers retain protective levels of antibody (titer ≥:8) at 12-24 months after vaccination.
This is a single-arm, open-label study of Rabies Immune Globulin (Human), Caprylate/Chromatography Purified (RIG-C), in approximately 12 healthy subjects. The purpose of this study is to characterize the rabies virus-specific antibody titer after a single intramuscular injection of 20 IU/kg RIG-C and to evaluate the safety and tolerability of RIG-C.
The purpose of this study determine whether the drug valganciclovir has a significant and real benefit on the central core of symptoms experienced by patients who have high titers to EBV and HHV-6 and are experiencing long-standing fatigue and cognitive impairment (CFS). In addition, to characterize a quantifiable biological marker in these patients that will facilitate the identification of those likely to respond to valganciclovir and will make it possible to assess response to treatment.
The purpose of this study is to identify subjects who are highly sensitized with antibodies. It is difficult for these patients to find suitable kidneys. We propose to treat such patients to decrease the antibodies in such a way, that it may become possible to safely transplant kidneys into them.
The purpose of this study is to compare the efficacy and safety of influenza vaccine in patients with inflammatory bowel disease (IBD) on immunosuppressive therapy with IBD patients on aminosalicylates and healthy historical controls.
Background: One of the main causes of respiratory infections in children and adults is RSV. This stands for respiratory syncytial virus. Healthy adults usually get a cold when they get an infection with RSV. They generally recover without any problems. But some infections can be life-threatening. Researchers want to study RSV infection in a safe, controlled setting in healthy adults to help develop new treatments. Objective: To test the safety of a high dose of RSV A2 by spraying the virus into the nose, and studying how the body responds. Eligibility: Healthy adults ages 18-50 Design: Participants will be screened during 2 screening visits with: * Medical interview * Physical exam * Blood and nasal samples * Chest X-ray (chest radiograph) * Participants will have a heart test. Sticky patches on the body will detect heart electrical activity. * Pulmonary function test (PFT). They will blow into a machine to measure airflow. * Urine tests for pregnancy or drug use. Participants will be admitted to the hospital before they get RSV A2. Participants will get a single dose of RSV A2 as two sprays, one into each nostril. Participants will stay in the hospital under isolation for as long as it takes the body to clear RSV A2 from nasal fluids. This can take as long as 14 days or more. Participants cannot take any cold medicine to try to feel better. Every day, participants will: * Answer questions about their symptoms * Have nasal washes and/or nasal swabs collected * Have a physical exam Participants will have blood drawn most days. After discharge, participants will keep a health diary. Participants will have 2 follow-up visits at 1 month and 2 months after receiving the RSV A2 dose. A history and physical examination, a blood draw, and nasal wash and swab will be performed.
Background: - There are more emerging infectious diseases recently. Some could affect many people. Some like Severe Acute Respiratory Syndrome (SARS) or Middle East Respiratory Syndrome (MERS) are caused by new germs. Sometimes known germs suddenly infect new and large areas, like Ebola. Many of these diseases don t have good treatments available. Researchers may be able to develop a treatment by using antibodies against these infections. Objective: - To collect antibodies from people with high levels of antibodies to the diseases being studied. Eligibility: - Ages 18-70 years old who weigh at least 110 pounds. They may have been infected with or vaccinated for one of the new infections researchers are studying. Design: * Participants will be screened with medical history and blood tests. Researchers will determine if the participant can have apheresis. * Participants will have apheresis. First, they will be interviewed. Then, a needle will be placed in a vein. Blood will be drawn, and a machine will separate the blood cells from the antibodies and protein. The blood cells will then be returned to the participant through another vein. It takes about 60 minutes for the actual collection. * Participants will be asked to have the procedure at least 3 times. They can participate in up to 20 sessions total as part of this study. There must be at least 7 days between sessions.
This is a gene transfer therapy study evaluating the safety of and delandistrogene moxeparvovec dystrophin protein expression from delandistrogene moxeparvovec following therapeutic plasma exchange (plasmapheresis) in ambulatory male participants with DMD and pre-existing antibodies to AAVrh74 over a period of 58 weeks.
Background: The Coronavirus disease 2019 (COVID-19) pandemic is a major public health issue. Researchers want to collect plasma from people who have recovered from COVID-19, and use this plasma to treat people who are sick with the disease. The plasma will have antibodies against the virus that causes COVID-19. Persons who have received a COVID-19 vaccine may also donate plasma that contains antibodies against the virus if they meet criteria according to the FDA. Objective: To collect plasma from people who have recovered from COVID-19 or have been vaccinated against the coronavirus that causes COVID-19, so that the plasma can be used to treat people with the disease. Eligibility: Adults ages 18 and older who have been diagnosed with, and have recovered from, COVID-19. Design: Participants will be screened with a physical exam, medical history, and blood sample. Their pulse, blood pressure, and temperature will be taken. Their height and weight will be recorded. Participants will donate plasma. It will be collected through whole blood donation or through apheresis. For whole blood donation, a needle will be placed in the participant s arm vein. Blood will be withdrawn. For apheresis, a needle will be placed in the participant s arm vein. Blood will be withdrawn. A machine will separate the plasma from the red cells. The plasma will be removed, and the rest of the cells will be returned to the participant either through the same needle or through a needle in their other arm. Participants will have 3 to 20 plasma donations. Participation will last up to 3 years.
This study will evaluate how HIV infection, including CD4 cell count and viral load, affects the patient's ability to produce antibodies in response to vaccination with the influenza (flu) vaccine. Earlier studies have shown that people with HIV infection do not respond as well as healthy subjects to flu vaccine; that is, they don't make as many antibodies in response to the vaccine. Before the use of current anti-HIV medications, antibodies made to flu vaccination in HIV-positive individuals was related to their CD4 cell count. This trial will examine how CD4 counts and the amount of virus in the blood affect how much and what kind of antibodies the body makes to the flu vaccine. HIV-infected patients and healthy normal volunteers between 18 and 60 years of age may be eligible for this study. Healthy subjects will serve as controls to make sure the flu vaccine works (i.e., stimulates production of enough antibody to protect against the flu), and to compare the amount of antibodies made by HIV-positive and HIV-negative people. Candidates will be screened with a medical history and blood tests (see below). Women who are able to have children will have a pregnancy test. Pregnant women are excluded from the study. Participants will undergo the following procedures: 1. Blood drawing for the following tests: * Routine tests (complete blood count, kidney and liver functions, electrolyte levels). * CD4 cell count. * HLA typing (a genetic marker of the immune system) if it has not already been done at the NIH. This test may be used to try to identify factors associated with the rate of progression of HIV disease or related conditions. Determining HLA type is necessary to be able to perform certain research studies. Some HLA types have been associated with an increased risk of certain diseases like arthritis and other rheumatologic problems. * Viral load (HIV-infected patients only). * Influenza antibody levels. * B cell levels. 2. Flu vaccination 3. Follow-up visits on days, 7, 28, and 54 after vaccination for the following: * Review of any illnesses or fever. * Review of medications, if any changes were made. * Repeat blood tests.
This 2-part study will examine 1) the immune response to influenza (flu) vaccine in HIV-infected patients, and 2) the effect of flu vaccine on HIV viral loads. Earlier studies have shown that people with HIV infection do not respond as well to flu vaccine as healthy subjects; that is, they don't make as many antibodies in response to the vaccine. Also, studies done before the use of HAART (highly active antiretroviral treatment) have shown that HIV levels increase for a period of time after flu vaccination. One small study showed a small brief increase in HIV even in patients taking HAART. The current trial will examine whether the flu vaccine does, in fact, cause an elevation in viral load and whether this increase is harmful or indicates a better response to the vaccine. HIV-infected patients and healthy normal volunteers between 18 and 60 years of age may be eligible for part1of this study. (Healthy volunteers will serve as control subjects to make sure the flu vaccine stimulates production of enough antibody to protect against the flu). Part 2 will include only HIV-infected patients with fewer than 50 copies per milliliter of HIV. Patients in both parts of the study must have been receiving HAART (consisting of at least two nucleoside reverse transcriptase inhibitors plus a non-nucleoside reverse transcriptase inhibitor or a protease inhibitor) for at least 3 months before enrollment in the study. Candidates will be screened with a medical history and blood tests, including HLA testing (a genetic test of immune system markers). Women who are able to have children will have a pregnancy test. Pregnant women are excluded from the study. Participants will undergo the following procedures: * Part 1 - Immune Response to Flu Vaccine In the first of two visits, participants will have blood drawn for flu antibody levels before vaccination and, in HIV-infected patients, measures of T cell count and viral load. They will then receive the flu vaccine. Blood will be drawn at a second visit 28 days later for the same tests. * Part 2 - Effect of Flu Vaccine on Viral Levels Participants will be randomly assigned to receive the flu vaccine either at the beginning of their enrollment in the study (immediate) or 3 weeks after enrollment (deferred). Those in the immediate group receive the flu vaccine on the first day (day 0) and have blood drawn on days 0, 3, 7, 10, 14, 17, 21, 24, 28, 31, 35, 38 and 42. Those in the deferred group are vaccinated on day 21 and have blood drawn on days 0, 3, 7, 10, 14, 17, 21, 24, 28, 31, 35, 38, 42 and 49. The blood is tested for viral load, CD4 cell counts and antibody levels.