National Institutes Of Health Clinical Center (cc)

This phase 2 study tests whether spironolactone, a drug already used for fluid retention, can improve exercise capacity and blood vessel function in people with pulmonary arterial hypertension (PAH). About 70 adults with PAH will receive either spironolactone or a placebo for 24 …

This study aims to improve the collection of granulocytes (a type of white blood cell) from healthy volunteers. Donors receive filgrastim and dexamethasone to move these cells into the bloodstream, then donate via apheresis. Up to 1,000 donors aged 18-75 can donate up to 12 times…

This study tests a wearable robotic exoskeleton designed to improve walking in children aged 3 to 17 with conditions like cerebral palsy, spina bifida, muscular dystrophy, or incomplete spinal cord injury. The device fits on the legs and can assist or resist movement during walki…

This Phase 1 trial tests a new radioactive tracer called [18F]-Fluorocellobiose ([18F]FCB) for PET/CT scans. The goal is to see if it can help find invasive mold infections in the body. The study includes healthy volunteers and people with known fungal infections. Participants re…

This study uses a tablet-based survey to ask people in US prisons who they would want to make medical decisions for them if they became unable to decide for themselves. Participants answer 26 questions and give feedback on whether each question is clear. The goal is to refine the…

This study looks at how diet and eating habits affect the health of adults with sickle cell disease. Researchers will interview participants about their food intake and behaviors, and collect blood and urine samples. The goal is to understand links between nutrition and symptoms …

This study collects blood from up to 5,000 healthy volunteers to provide samples for laboratory research at NIH and FDA. Donors are paid for their time and must meet standard blood donation safety rules. The blood is used only in lab experiments, not for treating people. This hel…

This study compares brain responses to heat, cold, brushing, and mild electric shocks in people with and without intellectual disability. Researchers use brain scans and heart rate monitors to measure pain. The goal is to better understand how pain is felt in this group, especial…

This study looks at proteins in lung fluid from 750 people with pneumonia to find biomarkers that could reveal what's causing the lung inflammation. Participants undergo a standard bronchoscopy with lung washings, plus a blood draw. The goal is to better understand different type…

This natural history study follows 270 adults with pulmonary arterial hypertension (PAH) and healthy volunteers to track how the disease changes over time. Researchers will use blood tests, heart and lung imaging, and a six-minute walk test to find new markers of disease severity…

This study aims to improve how MRI scans are done by testing new imaging techniques on up to 1,000 healthy volunteers and people with cardiac risk factors. Participants will have one or more MRI scans over a few years, with some receiving a contrast dye. The goal is to refine cur…

This study follows 150 people aged 7 and older with RYR1-related muscle disorders for 3 to 5 years. Researchers will collect medical history, perform physical exams, and use questionnaires, activity trackers, and tests of heart, lung, and muscle function. The goal is to better un…

This study collects blood and urine samples from healthy adults and patients with heart, lung, or blood vessel conditions. Researchers will use these samples to study genes, proteins, and other substances in the lab. The goal is to support basic and translational research that co…

This study uses MRI and ultrasound to watch how muscles, tendons, and bones work together when you move. Researchers hope to learn what normal and injured movement looks like, which could lead to better ways to diagnose and treat problems like knee pain. Healthy volunteers and pe…

This study looks at how stress and oral health habits relate to inflammation in people with alcohol use disorder (AUD). Researchers will test a new questionnaire about oral care and collect saliva, blood, and dental X-rays from 72 participants (AUD patients and healthy volunteers…

This study uses safe brain imaging techniques (NIRS and EEG) to see how the brain controls movement in people with and without cerebral palsy. Researchers will compare brain activity patterns and test whether biofeedback training can help people with cerebral palsy improve their …

This study is testing a new leg exoskeleton designed by the NIH to help children and young adults with muscle weakness from conditions like cerebral palsy or spinal cord injury. Researchers want to see how well the device works in different real-world settings, like walking on a …

This study aims to collect movement data from up to 7,500 people, including healthy volunteers and those with movement disorders. Participants perform tasks like walking or reaching while cameras track reflective markers on their body. The goal is to build a reference database th…

This study looks at how children and young adults with cerebral palsy move, using special sensors like ultrasound, brain wave caps, and muscle stickers. Researchers want to learn more about movement to improve robotic leg braces that could help people walk better. Participants wi…