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45 active trials for Healthy Volunteer

Development of Magnetic Resonance Spectroscopic Imaging Techniques for Imaging Metabolites in Human Brain and Muscle

Background: - Magnetic resonance imaging (MRI) is a widely used scanning technique to obtain images of the human body and evaluate activity in the brain. A particular MRI method called magnetic resonance spectroscopy (MRS) can be used to study brain chemistry as well, which may help researchers who are studying new treatments for psychiatric illnesses. Researchers are interested in improving current MRI and MRS techniques, as well as developing new MRI and MRS techniques to view and measure brain chemicals and brain activity. Objectives: - To implement, develop, and optimize brain chemistry imaging techniques using magnetic resonance imaging and magnetic resonance spectroscopy. Eligibility: - Healthy individuals between 18 and 65 years of age. Design: This study will involve a screening visit and a scanning visit at the National Institutes of Health Clinical Center. Participants will be screened with a full medical and physical examination, blood and urine tests, and neurological testing. During the second visit, participants will have an MRI scan of the brain. (Participants who have received an MRI within the past year will not need to have a second one; the images of the previous scan will be used for this study.) All participants will then have an MRS scan using the same scanning equipment....

Start: January 2011

Characterization of Diseases With Salivary Gland Involvement

Background: - Salivary glands in and around the mouth and throat make saliva. Salivary gland disorders can affect a person s quality of life. Studying people who have a disease that affects their salivary gland(s) may teach researchers about the disorders and their genetics. Objectives: - To study salivary gland diseases and disorders. To collect data and samples from people with salivary gland problems and their relatives. Eligibility: People more than 4 years old who have or are suspected to have a disease involving salivary glands. Their relatives more than 4 years old. Healthy volunteers 18 years or older. Design: Participants may be screened with: Medical history Physical exam Blood and urine tests General oral and dental history and exam Saliva collection Eye exam and test for dry eyes Health questionnaires (adults) Biopsy of some minor salivary glands. A small incision will be made on the inside of the lower lip and several tiny salivary glands will be removed. Participants will have 2 3 visits. These may include: Repeats of some screening tests Ultrasounds of some glands. Researchers will put some gel on the face, then press on it with a smooth wand. Adults may have other biopsies A small catheter inserted into the opening of the parotid gland duct on the inside of the cheek. A saline solution (in a syringe) will fill the duct. Swishing a saltwater solution in the mouth for 10 seconds and then spitting into a cup Scrapings collected from teeth, tongue, and cheeks

Start: April 2015

Emotional, Social, Cognitive and Behavioral Sequalae of the COVID-19 Pandemic.

Title: Emotional, Social, Cognitive and Behavioral Sequalae of the COVID-19 Pandemic Background: COVID-19 has caused a high rate of deaths. The steps taken to control its spread have caused social isolation, changes in lifestyle, economic turmoil, and increased work-related stress. As a result, there has been a rise in mental and physical health problems. These burdens are particularly severe for people with a history of mental illness. Researchers want to learn more about the relationship between stressors related to COVID-19 and self-rated measures of anxiety and other variables. Objective: To better understand the impact of this stressful time on people s lives and families. Also, to learn the strategies people have been using to deal with the COVID-19 pandemic. Eligibility: Adults ages 18 and older. Design: This is an online study. Participants will fill out surveys online. The surveys will ask about their mood, anxiety, medical history, substance use, and COVID-19 stressors. Participants will complete 2 online tasks. For the first task, they will tap a computer key when they see certain images. Then they will answer questions about the task. For the second task, they will stare at the center of a computer screen. When they see certain images, they will indicate the location of that image as quickly as possible. It will take about 2 hours for participants to complete the surveys and tasks. They may be contacted again if additional data is needed. Some participants may have taken part in other NIH studies. If so, their new data may be linked to their previously collected data.

Start: June 2021

Estimating Brain Biomechanics Using MRI

Objective: In this study we will develop and apply imaging techniques to perform the first three-dimensional (3-D) measurements of brain biomechanics during mild head movement in healthy human subjects. Biomechanics is the application of mechanics, or the physical principles in action when force is applied to an object, to the anatomical structure and/or function of organisms. Such techniques will be invaluable for building computational models of brain biomechanics, understanding variability of brain biomechanics across individual characteristics, such as age and sex, and determining brain sub-structures at risk for damage when movement of the head is accelerated, such as during a traumatic event. Study Population: Measurements will be performed on 90 healthy men and women aged 18-65. Design: We will build upon the model pioneered by our collaborator, Dr. Philip Bayly. The model places a human subject in a magnetic resonance (MR) scanner with one of two head support units that allows a specific range of motion. Each head support is latched such that it can be released by the subject, and results in either a rotation of the head of approximately 30 degrees or a flexion-extension of the head of approximately 4 degrees. Although both supports are weighted so that the motion is repeatable if the subject is relaxed, the subject can easily counteract the weight. The resulting acceleration/deceleration is small (in the range of normal activities, such as turning one's head during swimming) and has been validated and used in other human investigations of brain biomechanics. The subject repeats the motion multiple times during the MR scan under their own volition and desired pace to measure motion of the head and brain. Outcome measures: This project is a pilot study evaluating the potential of extracting three-dimensional estimates of brain deformation, such as strain measurements, using MR imaging. A primary outcome of this project will be a fast MR acquisition sequence for measuring 3-D brain deformation. The sequence will be evaluated by applying the protocol to human subjects, followed by preliminary quantification of the reproducibility and stability of deformation measurements.

Start: July 2012

Study Developed to Evaluate the Effect of ANG-3777 on QT/QTc Interval

The purpose of this study is to evaluate the effect of ANG-3777 on placebo-corrected change from baseline, QT/corrected QT (QTc) interval, following single intravenous (IV) doses in healthy volunteer adults.

Start: June 2021

A Study to Assess the Bioequivalence of Fixed Dose Combination of Dapagliflozin/Metformin XR Relative to Co-administration of the Individual Components in Healthy Chinese Subjects.

To assess the bioequivalence between dapagliflozin/metformin XR FDC tablet and co-administration of dapagliflozin and metformin XR tablets.

Start: April 2021

A Study to Assess Safety, Tolerability, and PK of EDG-5506 in Healthy Volunteers and Becker Muscular Dystrophy Adults

EDG-5506 is an investigational product intended to protect and improve function of dystrophic muscle fibers. This Phase 1 study of EDG-5506 will assess the safety, tolerability, and pharmacokinetics (PK) and of EDG-5506 in adult healthy volunteers and in adults with Becker muscular dystrophy (BMD).

Start: October 2020

Study of the Absorption, Metabolism, and Excretion of [14C]-Ecopipam in Healthy Male Subjects

Phase 1, single-center (United Kingdom), open-label, nonrandomized, single-dose study in healthy adult male subjects to assess the absorption, metabolism, and excretion of [14C]-Ecopipam in Healthy Male Subjects.

Start: May 2021

Neuropharmacologic Imaging and Biomarker Assessments of Response to Acute and Repeated-Dosed Ketamine Infusions in Major Depressive Disorder

Background: Most medications that treat depression take weeks or months to work. Researchers want to develop fast-acting treatments. One dose of ketamine has a rapid antidepressant effect. For most people, this lasts a week or less. Repeated doses of ketamine may help maintain this effect. Objective: Main Study: To study the effects of ketamine in treating depression. Ketamine Metabolites Substudy: To study how ketamine effects brain chemistry. To study how ketamine effects the brain. This is done by looking at metabolites, which are created when a drug is broken down. Eligibility: Main Study: People ages 18-65 with major depressive disorder and healthy volunteers Ketamine Metabolites Substudy: Healthy volunteers ages 18-65 Design: Main Study: Participants will be screened in another study, with: Medical and psychiatric history Psychiatric and physical exam Blood, urine, and heart tests Participants will be inpatients at NIH for 4 phases totaling 14-20 weeks. Phase I (2-7 weeks): Gradually stop current medications MRI: Participants lie and perform tasks in a machine that takes pictures of the body. Mood and thinking tests Blood and urine tests Sleep test: Monitors on the skin record brain waves, breathing, heart rate, and movement during sleep. Transcranial magnetic stimulation: A coil on the scalp gives an electrical current that affects brain activity. Stress tests: Electrodes on the skin measure reactions to loud noises or electric shocks. Phase I tests are repeated in Phases II and III and in the final visit. Phase II (4-5 weeks): 4 weekly IV infusions of ketamine or a placebo during an MRI or MEG. For the MEG, a cone over the head records brain activity. Phase III (optional): 8 infusions of ketamine over 4 weeks Phase IV (optional): Symptoms monitoring for 4 weeks Participants will have a final visit. They will be offered standard treatment at NIH for up to 2 months. Ketamine Metabolites Substudy: Participants will be screened in another study, with: Medical and psychiatric history Psychiatric and physical exam Blood, urine, and heart tests Participants will be inpatients at NIH for 4 days. Study Procedures: Mood and thinking tests Blood and urine tests 1 infusion of ketamine Spinal tap and spinal catheter: Used to get samples of cerebrospinal fluid (CSF). This is a fluid that moves around and within the brain and spinal cord. Studying CSF will help us learn how ketamine effects brain chemistry

Start: May 2017

Recruitment and Characterization of Healthy Research Volunteers for NIMH Intramural Studies

Objective: To screen and create a list of adult volunteers in good health for participation in research studies conducted at the National Institutes of Health (NIH) in Bethesda, Maryland. Develop a normative set of structural and functional brain MRI scans that are linked to healthy research volunteer characteristics. Maximize scientific impact of data from volunteers by broadly sharing with other researchers. Study Population: Adult males and females in general good health who are 18 years of age and older. Design: Adult individuals who are interested in participating in NIMH IRP clinical studies as a healthy research volunteer can directly visit or be directed to visit the study website where they will first consent electronically and then complete a set of online self-report measures. Items may include: demographic information, mental health symptoms, disability status, substance use patterns, handedness and clinical/family history. Individuals who are flagged based on predetermined responses to survey items will be further screened by a member of the study clinical team. If found to be ineligible for the study because of a clinically significant or unstable medical or mental health condition, these individuals will be referred back to the community and/or given information about NIMH clinical studies for which they may be eligible. Respondents with no flags or who pass through additional screening will be scheduled for an in-person assessment. During the outpatient appointment and after in-person informed consent, participants will receive a brief clinical interview to screen for current medical and mental conditions, and risk for self-harm. They will complete assessments of psychological, emotional, physiologic, biological and cognitive functioning. Participants will undergo a physical exam and be asked to provide blood and urine samples for routine clinical labs as well as additional blood samples for future secondary analysis that could include genetic or biomarker assays. Participants can separately consent for an optional baseline brain magnetic resonance imaging (MRI) scan and an optional magnetoencephalography (MEG) exam. All consent forms will explicitly inform participants that if enrolled in the study, their de-identified data will be broadly and publicly shared through NIH-approved data repositories. Participants in this recruitment and characterization study will then be placed on a list of healthy research volunteers from which other NIMH IRP studies may recruit according to the inclusion and exclusion criteria in their respective IRB-approved protocols. Outcome Measures: Outcome measures may include demographic data, mental and medical history and symptoms, results of psychological, emotional, physiologic, biological, and cognitive testing, physical exam and MRI findings. ...

Start: November 2017

Oral Bacteria and Immune System Problems Involved in Gum Disease (Periodontitis)

Background: - Gum disease is a condition in which the tissue around the tooth root becomes swollen and infected. This condition can cause tooth loss if it is not treated. Who gets gum disease and how bad it will be depends on (1) the different bacteria in the mouth and (2) how the immune system of an individual handles these bacteria. Researchers want to look at the oral bacteria and genetic immune problems of different people to learn how these affect gum disease and other conditions of the mouth. Objectives: - To study how immune system problems may lead to problems in the mouth, including gum disease. Eligibility: Children and adults at least 7 years of age who have genetic problems with their immune system. Healthy adults that have periodontal disease Health adults that do not have periodontal disease Design: This study will involve a screening visit and a study visit. Participants will be screened with a medical history, blood work and a full oral and dental exam, including dental x-rays and photos. The study visit will involve collection of blood, urine, and other samples, including saliva, plaque, and gum swabs. Any abnormal tissue will sampled for a biopsy. Additional oral and dental exams will be performed. Participants will also answer questions about any current medical or dental problems.

Start: October 2012

Ascending Dose Study of the Safety and Tolerability of REGN6490 in Healthy Volunteers

The primary objective of the study is to evaluate the safety and tolerability of single ascending intravenous (IV) and subcutaneous (SC) doses of REGN6490 in healthy adult participants The secondary objectives of the study are to: Characterize the pharmacokinetic (PK) profile of single IV and SC doses of REGN6490 in healthy adult participants Assess immunogenicity of REGN6490 in healthy adult participants dosed with a single IV or SC dose of REGN6490

Start: November 2020

Effects of Tradipitant on Satiation, Gastric Volume, Gastric Accommodation, and Gastric Emptying in Healthy Volunteers

To evaluate the effects of tradipitant relative to placebo on satiation, gastric volume, gastric accommodation, and gastric emptying in healthy volunteers.

Start: February 2021

Systems Analyses of the Immune Response to the Seasonal Influenza Vaccine

Background: Vaccines help prevent disease by causing the body to have an immune response. Many parts of this response happen in the blood. This response happens over days and weeks after getting the vaccine. Researchers want to how the blood changes over time in response to vaccines. They want to find out why vaccines work better for some people than for others. This could help make more effective vaccines. Objective: To learn about how the body responds to vaccines. Eligibility: Healthy people ages 18 and older Design: Participants will be screened with a medical history, physical exam, and blood and urine tests. Participants will have 9 visits over 6 months. All visits will include blood tests and a physical exam. Participants will have the first visit 1 week before they get the vaccine. Participants will get the flu vaccine at the second visit. The vaccine will be injected into the muscle of the upper arm with a needle. They will be watched for side effects for 15 minutes. Participants will have the next 2 visits exactly 1 day and 1 week after they get the vaccine. They will have the other 5 visits about 14, 28, 70, and 100 days after they get the vaccine. Participants will take email questionnaires about whether they had any side effects. Participants may have optional extra study visits. These will be no more than once a month for up to 1 year after they get the vaccine. Optionally, they can also repeat the study each year through the 2023 - 2024 flu season

Start: October 2019

Circulating Tumor DNA (ctDNA) for Early Treatment Response Assessment of Solid Tumors

Earlier detection of disease recurrence will enable greater treatment options and has strong potential to improve patient outcomes. This project is translational and has the potential to lead to future translational research opportunities, including interventional trials in which therapeutic escalation is offered at the early circulating tumor DNA (ctDNA) molecular residual disease (MRD) detection timepoint. Ultimately, the integration of ctDNA into the clinical workflow has the potential to enhance cancer diagnosis, treatment, surveillance, and prognosis, and guide clinical decision-making in this era of personalized precision medicine.

Start: May 2019

Links Between Inflammation and Cardiometabolic Diseases

Background: - Cardiometabolic diseases are a combination of medical disorders that, when they occur together, increase the risk of heart disease and diabetes. Researchers want to learn if there is a relationship between these diseases and inflammation (redness, swelling, and pain). Inflammation affects the entire body. Researchers will study this relationship in people with heart disease and diabetes, and compare it to healthy people. Objectives: - To learn if there are links between inflammation and cardiometabolic diseases. Eligibility: Adults 18 years of age or older with heart disease or diabetes. Healthy volunteers 18 years of age or older. Design: Participants will have up to six study visits. There will be first visit, then an optional visit 12 months after the first visit. At the study visits they will have: Blood taken with a needle in their arm. An electrocardiogram. Small patches are stuck to the chest and limbs. A machine measures electrical signals of the heart. Completed a number of questionnaires. A body scan called an FDG PET/CT. A substance will be injected through a tube in their arm. They will lie on a special bed that will move in and out of the PET/CT scanner. The PET/CT scanner will take pictures of the body. The scan will last up to 30 minutes. Some participants will have other body scans ( FDG PET/MRI). The procedures are similar to the FDG PET/CT scan. These other scans will last about 30 minutes total. Some participants will also have a CT scan of their heart. A substance will be injected through a tube in their arm. They will lie on a table in a large, donut-shaped machine. An X-ray tube will move around their body, taking many pictures. This procedure can last up to 2 hours. Some participants will have tests that measures blood pressure and how the blood moves through the body. Some participants will have small samples of skin and fat tissue taken.

Start: December 2013

Pulmonary Inflammation Using FNOS PET in E-cigarette

The purpose of this research is to measure the extent of lung inflammation between different groups of participants using a radioactive tracer called [18F]NOS. A radioactive tracer is a type of imaging drug that is labeled with a radioactive tag and injected into the body. This study will see how the tracer is taken up in the lungs using an imaging scan called Positron Emission Tomography / Computed Tomography (PET/CT). [18F]NOS is an experimental radioactive molecule used in PET imaging to measure inflammation in various organs in the body. Investigators are interested in studying whether there are differences in lung inflammation between E-cigarette users (vapers) cigarette smokers and non-smokers. [18F]NOS has not yet been approved by the Food and Drug Administration (FDA) for use except in a research study. The use of [18F]NOS in this study is allowed under an Investigational New Drug Application approved by the FDA. Investigators are also going to be studying how the information from the PET/CT scan compares to other markers of inflammation in the blood. During the PET scan, Investigators will image Brain and Lungs in order to see if there is a difference between inflammation seen in the brain and the lungs and if these differences change depending on whether a subject is a smoker, e-cigarette user or non-smoker. Consented participant in this study will undergo one (1) experimental [18F]NOS PET/CT scan. During the scan, PET/CT images will be taken of participant chest/torso in order to capture their lungs and a short image will be taken of their brain. Blood samples will be taken at various time points to test for markers of inflammation and to measure the concentration of the tracer in participants blood during the scan and participants will undergo some specific psychological questionnaires and tasks.

Start: October 2018

A Study to Evaluate the Metabolism and Excretion of [14C]-CC-90009 in Healthy Male Subjects

CC-90009-CP-001 is a Phase 1, single-center, open-label, clinical pharmacology study to measure how much CC 90009 gets into the bloodstream, how much is eliminated in urine and stool, and how long it takes the body to get rid of it. In addition, the safety and tolerability of CC 90009 will be evaluated.

Start: March 2020

Renal Impairment Study of PF-06700841

The purpose of this study is to characterize the effect of kidney impairment on the blood concentrations of PF-06700841 and its major metabolite. Findings from this study will be used to develop dosing recommendations so that the dose and/or dosing interval may be adjusted appropriately in the presence of kidney disease.

Start: July 2020

Collection of Peripheral Blood Mononuclear Cells (PBMCs) From Healthy People for the Expansion of T Cells for Adoptive Cell Therapy

Title: Collection of Peripheral Blood Mononuclear Cells (PBMCs) from Healthy People for the Expansion of T Cells for Adoptive Cell Therapy Background: New therapies are being developed that use a person s own immune system to fight tumors. Some of the tumors being studied include cancers caused by viruses. Researchers want to use the healthy cells of volunteers to perform research studies. To do this, they are collecting lymphocytes through leukapheresis. Objectives: To collect healthy cells from volunteers for research studies for new cancer therapies. Eligibility: Healthy people ages 18 and older Design: Participants will be screened with a standard donor questionnaire. It asks about their health and past medical problems. It also asks about risky behaviors that could increase their exposure to viruses or bacteria that could be transmitted through a transfusion. Participants will give a blood sample to make sure they are able to donate. They will have a physical exam. A finger stick test will check their hemoglobin, or red blood cell, level. They might give a urine sample. Participants will undergo apheresis. For this, a needle is placed in a vein in each of their arms. Their blood is taken from one arm. A machine separates the white cells from the red cells and plasma by a spinning process. The white cells are removed and directed into a plastic bag. The red cells and plasma are returned through the needle in the other arm. The entire procedure takes 4 6 hours. Participants may donate every 21 days in this protocol if they choose to. ...

Start: August 2016