The purpose of this study is to evaluate the efficacy of psilocybin on the symptom of anhedonia in individuals with treatment-resistant major depressive disorder.

Type: Interventional

Start Date: Jul 2024

open study

The investigators will recruit individuals with broadly-defined AN (n = 80) who are currently in or have recently participated in higher-level eating disorder treatment (e.g., residential, partial hospitalization/day treatment, intensive outpatient treatment). Interested participants will sign consent, complete eligibility assessments, and will be randomized to receive Positive Affect Treatment for Anorexia Nervosa (PAT-AN) or Psychoeducation and Behavioral Therapy (PBT) through teletherapy shortly following discharge from higher level of care. Participants can participate in most other forms of outpatient treatment while receiving the research intervention. Participants will engage in 24 weeks of PAT-AN or PBT starting in the first 3 months post-discharge. At each session, the investigators will complete brief measures assessing treatment acceptability, affect, and eating disorder symptoms. Participants will also complete an assessment battery of self-report, EMA, and neurocognitive measures evaluating primary outcomes (BMI; eating disorder symptoms), secondary outcomes (depression, anxiety, and suicidality), and presumed treatment mechanisms at baseline, end of treatment (EOT), and 3-month follow-up (FU). All assessments will be remotely delivered via HIPAA-compliant platforms.

Type: Interventional

Start Date: Dec 2023

open study

Purpose of the Research: The primary aim of the proposed study is to conduct a randomized parallel-group 2-arm clinical trial investigating capnometry-guided respiratory intervention (CGRI) for pathological anxiety. CGRI aims to raise end-tidal CO2 levels thereby lowering hyperventilation-induced respiratory alkalosis and its associated fear-eliciting somatic reactions. Psycho-education about anxiety and its effects (PsyEd) will serve as a credible control comparator.

Type: Interventional

Start Date: Aug 2022

open study

Background: Diet is one of the most modifiable behaviors affecting health. But diet assessment measures that are based on self-report can be inaccurate. Researchers want better ways to address the role of diet in chronic disease. They want to see if stable isotopes can be used to better assess what people eat. Objective: To see if stable isotopes can help scientists identify things people eat. Eligibility: Healthy adults ages 18 to 65 Design: Participants will be screened with a medical history and physical exam. They will have blood and urine tests. These tests will be repeated during the study. Participants will stay in the inpatient unit of the NIH in Phoenix, Arizona, for 13 weeks. For 7 days, participants will eat a diet prepared by the NIH kitchen. They will get balanced meals that are 50% carbohydrates, 20% protein, and 30% fat. Then participants will be randomly placed on one of 3 diets containing different percentages of carbohydrates from soda. Participants height and weight will be measured. The amount of fat and muscle in their body will be measured by body scans that are similar to x-rays. Participants will have oral glucose tolerance tests. They will consume a sugar drink and then give blood samples over 3 hours. Participants will give hair and stool samples. Participants will complete a diet questionnaire. It assesses their food intake over 24 hours. Participants will complete behavioral questionnaires and computer performance tests. Participants will have fat biopsies taken from their stomach and thigh. Participants will have three 24-hour stays in a metabolic chamber. It is used to measure metabolism.

Type: Interventional

Start Date: Feb 2022

open study

Background: Interstitial lung disease affects the tissues that aid the transfer of oxygen and carbon dioxide between the air and the bloodstream. The disease can cause fibrosis, a thickening and scarring of lung tissue. Fibrosis often continues getting worse, and most people with this disease die in 3 to 5 years. Objective: To test a study drug (hymecromone) in people with interstitial lung disease or lung fibrosis. Eligibility: People aged 18 years and older with interstitial lung disease or lung fibrosis. Design: Participants will have at least 7 clinic visits over 5 months. Participants will have screening and baseline visits. They will have blood tests and tests of their heart function. They will give a sputum sample. Other tests will include: Spirometry: Participants will breathe in and out through a mouthpiece to measure how much air they can hold in their lungs and how hard they can breathe. Diffusion capacity of lungs for carbon monoxide: Participants will breathe in a gas that contains a small amount of carbon monoxide. Then they will breathe through a mouthpiece. This test measures how well oxygen moves from the air into the blood. Resting energy expenditure. Participants will lie still for 30 minutes with a clear dome over their head. This test measures the calories their body burns at rest. 6-minute walk test. Participants will walk at their normal pace for 6 minutes. Their vital signs and blood oxygen levels will be checked. Hymecromone is a tablet taken by mouth. Participants will take 2 tablets every morning and 2 tablets every night for 12 weeks. Tests will be repeated at study visits.

Type: Interventional

Start Date: May 2025

open study

The goal of this clinical trial is to learn if 8 sessions of brief exposure and exercise therapy works to treat Post Traumatic Stress Disorder (PTSD) in adults. This study will also learn if participants think brief exposure and exercise therapy is a good and doable treatment. and The main questions it aims to answer are: - Do participants find brief exposure and exercise an acceptable and feasible means of treatment for PTSD? - Does brief exposure and exercise decreases of the severity of PTSD symptoms? Participants will: - Complete weekly questionnaires for 10-14 weeks. - Attend 8 twice weekly exposure therapy and exercise sessions for 4 weeks.

Type: Interventional

Start Date: Jun 2025

open study

People with fibromyalgia report generalized body pain ("pain all over"), increased sensitivity to painful stimulation, chronic tiredness or low energy, sleep problems, and other physical and functional problems. The exact cause of the disorder is poorly understood, and treatment can be difficult. The degree to which duloxetine is helpful for people with fibromyalgia varies greatly. For some people, it is very helpful for managing fibromyalgia symptoms. For others, people may not notice any benefit. Yet for some, it is a little helpful and the effect is noticeable only when people forget to take the medicine. The purpose of this study is to collect data to better understand the relationship among gene types that control those enzymes, blood concentrations of duloxetine, and how it helps the symptoms.

Type: Observational [Patient Registry]

Start Date: May 2025

open study

Anxiety is very common in autistic youth. Cognitive behavioral therapy (CBT) is the recommended treatment for both autistic and typically-developing (TD) youth with anxiety, yet most families cannot access CBT due to cost, practicalities of attending in-person treatment sessions, and a shortage of trained providers, especially in rural areas. The goal of this project is to increase access to care for families of autistic adolescents with anxiety through an internet-based treatment model.

Type: Interventional

Start Date: Nov 2024

open study

The purpose of this study is to research the effects of partial sleep deprivation (sleep restriction) in a group of individuals whose parents have high blood pressure compared to a group of individuals whose parents have normal blood pressure.

Type: Interventional

Start Date: Feb 2025

open study

The goal of this clinical study is to learn if RSLV-132 improves the symptoms of SS in adults. It will also learn about the safety of RSLV-132. The main questions it aims to answer are: - Does RSLV-132 improve the cardinal symptoms of Sjogren's including fatigue, dryness and pain? - Does RSLV-132 improve the tiredness/fatigue caused by Sjogren's? - What are the blood levels of RSLV-132 over time? - What is the immune (antibody) response in the body to RSLV-132? - What is the safety profile of RSLV-132? Researchers will compare RSLV-132 to a placebo (a look-alike substance that contains no drug) to see if RSLV-132 improves the symptoms of pSS. Participants will: Take RSLV-132 or a placebo 13 times over 22 weeks Visit the clinic once every week for the first 2 weeks, then every 2 weeks until the end of treatment and then for a final time 4 weeks later (Day 211) for check-ups, tests and to answer questionnaires about their symptoms Record their symptoms every day on an electronic device

Type: Interventional

Start Date: Dec 2024

open study

The goal of this clinical trial is to learn about an online group program (Healthy Families Bright Futures program) for LGBTQ+ teens and their caregivers. The main question[s] it aims to answer are: • is this program acceptable, appropriate, and feasible for LGBTQ+ youth and their caregivers • does the program affect teen (alcohol use, dating violence, alcohol use refusal self-efficacy, healthy communication self-efficacy) and caregiver (accepting behaviors, parenting self-efficacy, parenting behaviors) outcomes associated with risk for dating violence and alcohol use among LGBTQ+ teens. Participants will participate in a one-hour weekly online group for seven weeks with separate groups for teens and caregivers.

Type: Interventional

Start Date: Jan 2025

open study

Deficits in cognitive control are core features of late-life depression (LLD), contributing both to emotion dysregulation and problems with inhibiting irrelevant information, conflict detection, and working memory. Clinically characterized as executive dysfunction, these deficits are associated with poor response to antidepressants and higher levels of disability. Improvement of cognitive control network (CCN) dysfunction may benefit both mood and cognitive performance, however no current pharmacotherapy improves Cognitive Control Network deficits in LLD. The study examines the hypothesis that nicotine acetylcholine receptor agonists enhance Cognitive Control Network function. This effect may resultantly improve mood and cognitive performance in LLD. Small, open-label studies of transdermal nicotine (TDN) patches have supported potential clinical benefit and provided support that transdermal nicotine administration engages the Cognitive Control Network. This blinded study will expand past open-label trials supporting potential benefit in LLD. It will examine TDN's effect on depression severity and cognitive control functions measured by neuropsychological testing. The study will evaluate 60 eligible and enrolled participants over a 3-year period.

Type: Interventional

Start Date: Apr 2023

open study

The purpose of this Phase 1 research study is to answer two questions: (1) How frequent should periods of prolonged sedentary time be interrupted? and (2) What is the appropriate duration or length of time of these breaks in sedentary time? To address these questions, this project will conduct a state-of-the-art adaptive dose finding study under controlled laboratory conditions to determine the minimally effective dose (the smallest dose) that yields cardiometabolic benefit for two separate sedentary break elements (frequency and duration). Study findings will ultimately determine how often and for how long people should break up periods of prolonged sedentary time to transiently improve established cardiovascular risk factors; key foundational information critical to the success of future long-term trials and ultimately public health guidelines. Primary Aim: To determine the minimally effective dose combination(s) of frequency and duration needed to provide cardiometabolic benefit during an 8-hour experimentation period. Specifically, the study will determine: 1a. For each fixed duration, the minimum sedentary break frequency (e.g., every 30 min, 60 min, 120 min) that demonstrates a reduction in systolic BP, diastolic BP, or glucose compared with a sedentary control condition. 1b. For each fixed frequency, the minimum sedentary break duration (e.g., activity breaks of 1 min, 5 min, 10 min) that demonstrates a reduction in systolic BP, diastolic BP, or glucose compared with a sedentary control. Secondary Aim: It is also critical to public health strategy to assess the acceptability/feasibility of various sedentary break doses as too high a dose will yield poor uptake. To address this need, the maximally tolerated dose (the highest dose that does not cause undue physical/psychological distress) for frequency and duration of sedentary breaks will also be determined via assessment of 4 constructs: physical exhaustion/fatigue, affect (e.g., mood, emotion), tolerability (e.g., completion of dose protocol), and safety (e.g., hypoglycemia). Maximally tolerated dose will be defined as the highest dose where <20% of participants exhibit an adverse outcome.

Type: Interventional

Start Date: Jun 2022

open study

This clinical trial studies the effect of four different intervention components "tools" on body weight, nutrition, and physical activity in cancer survivors. Studies indicate that people with a history of cancer whose nutrition and physical activity habits are consistent with the American Cancer Society's Nutrition and Physical Activity Guidelines may have longer disease-free survival. The four different intervention components may help patients with a history of cancer adopt recommended health behaviors after they have completed treatment.

Type: Interventional

Start Date: Oct 2021

open study

Individuals with multiple sclerosis (MS) experience in impairments in mobility and cognition that increase the risk for accidental falls. More than 50% of individuals with MS experience injurious falls within a 6-month period. Current interventions to improve fall risk have focused on forward walking (FW) and balance training, resulting in small declines in the relative risk for falls with a large degree of variability. Interestingly, motor differences between MS and healthy controls are more pronounced in backward walking (BW), yet no studies have investigated BW training as an intervention to reduce fall risk in persons with MS. This study will investigate the feasibility, acceptability and impact of BW training compared to forward walking training on motor function and fall risk in persons with MS.

Type: Interventional

Start Date: Jan 2020

open study

Black individuals are more likely to have decreased insulin sensitivity which results in a high risk for the development of cardiometabolic disease. The reasons for this are incompletely understood. Natriuretic peptides (NPs) are hormones produced by the heart that play a role in regulating the metabolic health of an individual. Low circulating level of NPs is an important contributor to increased risk for diabetes. The NP levels are relatively lower among Black individuals thus affecting their metabolic health and putting them at a higher risk for diabetes. This study aims to test the hypothesis that by augmenting NP levels using sacubitril/valsartan, among Black Individuals one can improve their metabolic health (as measured by insulin sensitivity & energy expenditure) and help establish the role of NPs in the underlying mechanism behind increased risk for cardiometabolic disease in these population.

Type: Interventional

Start Date: Aug 2020

open study

Despite the fact that a substantial number of school age children struggle with both reading and math acquisition, the brain mechanisms of the overlapping aspects of reading and math skills, thought in part to be linked via executive functions (EF), have not been unpacked. This project will use a longitudinal design, following children from Kindergarten through 1st grade, to understand how the brain networks associated with reading, math, and EF interact to predict academic outcomes and, in those who struggle academically, intervention response.

Type: Interventional

Start Date: Aug 2019

open study

The intervention in this trial is intraocular islet transplantation. A single dose of 1000 - 3000 Islet Equivalents (IEQ)/kg recipient body weight (BW) will be infused into the anterior chamber of the eye through a self-sealing incision in the peripheral cornea. The procedure is projected to take approximately 20-30 minutes. Subject will remain flat on their back for 1 - 3 hours after islet infusion to maximize adhesion of the islets to the iris.

Type: Interventional

Start Date: Dec 2019

open study

Hirschsprung disease is a genetic condition caused by lack of nerve cells in varying lengths of the intestines. This study will investigate the complex genetic basis of the disease, which involves multiple interacting genetic factors.

Type: Observational

Start Date: Jan 2001

open study

The purpose of this study is to evaluate the efficacy of the oral, live, attenuated ShigETEC vaccine against challenge with S. flexneri 2457T. In Stage 1 of this study, ShigETEC vaccine or placebo will be administered orally to healthy participants at a dose of 5x10^10 CFU. This dose was tested in a Phase 1 trial and found to be safe when given 4 times with an interval of 3 days between each dose. The efficacy of ShigETEC vaccination will be evaluated in Stage 2 of this study, when participants will be challenged with S. flexneri 2457T. The study population will be healthy adult participants in the age of 18-50 years (inclusive), which are clearly defined in the study protocol.

Type: Interventional

Start Date: Jun 2025

open study

The purpose of this study is to investigate the ability of a translational device, Teledyne PeakSleep, to reduce sleep onset latency, reduce time awake after sleep onset and improve restfulness and the subjective benefits of sleep in a patient population with insomnia via transcranial direct current stimulation (tDCS) applied to frontal lobe circuits.

Type: Interventional

Start Date: Oct 2023

open study

People living with HIV (PLWH) have a higher rate of post-traumatic stress disorder (PTSD) diagnosis than the general population. Comorbid PTSD is also associated with negative HIV-related health outcomes. Unfortunately, little outcome research has examined the usefulness of PTSD treatments for PTSD. This pilot study adapts for PLWH a non-exposure based psychotherapy for PTSD focused on reflecting on one's emotions and relationships and understanding and working through how trauma may have disrupted them. The study team is interested in better understanding the needs of PLWH with PTSD, learning whether PLWH with PTSD find this treatment acceptable and helpful, and beginning to understand the relationship between HIV-related health factors (e.g., inflammation and stress biology) and PTSD, and how these health factors may improve during treatment.

Type: Interventional

Start Date: Apr 2024

open study

In this study, researchers will learn more about a study drug called BIIB091 in participants with MS who may be experiencing relapses. It is a 2-part study. In Part 1, one set of participants will take either BIIB091 or diroximel fumarate (DRF). In Part 2, a different set of participants will take either a combination of BIIB091 and DRF or DRF alone. The goal of the study is to learn more about the safety of BIIB091 and to compare the effects of the study drug when taken alone or together with DRF. The main question researchers are trying to answer are: - How many participants have new or worsening medical problems (adverse events) after taking BIIB091 or DRF? - How many new areas of inflammation occur in the brain after treatment with BIIB091 and DRF? Researchers will use magnetic resonance imaging (MRI) scans to compare images of the brain before and after treatment. They will also explore the effect of BIIB091 and DRF on the heart using electrocardiograms (ECGs). The study will be done as follows: - After screening, participants who joined Part 1 will be randomly assigned to receive either a high or low dose of BIIB091, or the standard dose of DRF. - The results of Part 1 will be used to choose the best dose of BIIB091 to use in Part 2. - Participants who join Part 2 will be randomly assigned to receive either a standard dose of DRF, a combo of BIIB091 and the standard dose of DRF, or a combo of BIIB91 with a low dose of DRF. - Neither the researchers nor the participants will know which drug or dose the participants will receive in either part of the study. - The treatment period will last 48 weeks in each part of the study. Participants will take the drugs by mouth 2 times a day. - Each part will also have a follow-up safety period that lasts up to 2 weeks. - In total, participants in each part will have 20 study visits, or more if they have a relapse. The total study duration for participants will be up to 54 weeks.

Type: Interventional

Start Date: Jul 2023

open study

The goal of this clinical trial is to determine the physiological basis for the differences in weight regain among adults (25-59 years old) with obesity following participation in a behavioral weight loss program. Eligible participants will undergo a baseline evaluation after which they will enter an up to 20 week behavioral weight loss program with the goal of losing at least 7 percent of their baseline weight within 35 weeks. Participants who meet the weight loss goal will be asked to remain weight stable for 2 weeks after which they will undergo a clinical examination. They will then be observed for 1 year during which they will undergo 2 additional clinical examinations, one 4 months after completing the weight loss program, and the other 12 months after completing the weight loss program.

Type: Interventional

Start Date: Sep 2023

open study

Mood lability is an important transdiagnostic problem that is associated with poor psychosocial function and suicidal thoughts, and is a predictor of mood disorder onset, especially in youth at familial risk. Thus, particularly in youth with a family history of mood disorder, an intervention to target mood lability during a key period of development could improve outcomes. This study will allow us to test neurobehavioral mechanisms of a mindfulness-based intervention to target mood lability in early adolescents at high risk for developing mood disorders. Through this randomized controlled trial, the investigators will better understand how and for whom mindfulness interventions work, which will lead to more targeted interventions to improve emotion regulation during this key developmental period.

Type: Interventional

Start Date: Sep 2022

open study