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229 active trials for Healthy Volunteers

Studies of Dermatologic Diseases Biospecimen Acquisition Protocol

Background: - Skin disease can have many causes. It can have widespread consequences, and in rare cases can lead to death. Researchers want to determine the causes of various types of skin diseases and find a way to treat them. Objectives: - To determine the causes of various skin diseases and find ways to treat them. Eligibility: People ages 2 and older who have: A skin disease or at risk of developing a skin disease OR A family member of persons with a skin disease Healthy volunteers ages 2 and older Design: Participants will be screened under a separate protocol. Participants may take a survey about how their skin condition affects their quality of life. Participants will have a medical history and a physical exam including a detailed skin exam. Pictures will be taken of their skin to document any skin disease. Participants will have specimens collected. This may include: Several teaspoons of blood taken at each visit Stool samples Nail and body fluid (like saliva) samples Cheek swabs. The inside of the cheek will be scraped for about a minute in each direction to collect cells. Collection of skin samples with: A swab (like a Q-tip) Gently scraping skin to remove the outer layers of cells Applying and removing 1-inch pieces of tape Participants may have up to 4 skin biopsies in 12 months, with 4 separate biopsies taken each time. An area of skin will be numbed with an injection. A piece of skin the size of a pencil eraser will be removed using a small instrument. A flat scar usually develops at the biopsy site.

Start: June 2015
A Phase I Study to Evaluate the Taste of Belumosudil Oral Suspensions & Assess Relative Bioavailability

This is a single-center, randomized, open-label, 2-part study in healthy male subjects to evaluate the taste profile of different belumosudil oral suspensions and the relative bioavailability of those chosen oral suspensions of belumosudil compared to oral tablets of belumosudil. Part 1 is an open-label, randomized single-period study of oral suspensions of belumosudil 40 mg/mL delivered in 6 different vehicles. Approximately 12 healthy male subjects, 2 subjects in each of 6 groups, will be administered a single dose of belumosudil 40 mg/mL in 6 different vehicles (Vehicles 1, 2, 3, 4, 5, and 6) in corresponding Regimens A, B, C, D, E, and F in different sequences of the 6 vehicles. All subjects will receive 1 dose of all belumosudil in all 6 vehicles which are as follows: ABFCED; BCADFE; CDBEAF; DECFBA; EFDACB; and FAEBDC. Part 2 is a single-center, open-label, randomized, 3-period design to assess the relative bioavailability of a selected belumosudil suspension formulation compared to the oral belumosudil. Tablet reference and the effect of food on the selected belumosudil suspension formulation in 18 healthy male subjects. Subjects will be randomized prior to the administration of the first dose of IMP to 1 of 6 treatment sequences (GHI, HIG, IGH, IHG, GIH and HGI), with 3 subjects assigned to each treatment sequence where: Regimen G--oral belumosudil 200 mg tablet (reference) with the subject fed; Regimen H--belumosudil powder 200 mg for oral suspension or belumosudil 200 mg oral suspension with the subject fasting; and Regimen I--belumosudil 200 mg powder for oral suspension or belumosudil 200 mg oral suspension with the subject fed.

Start: November 2020
Bioequivalence of Solid/Crushed/Dissolved Forms of Biktarvy®

Study context: Some HIV-positive patients have difficulties with oral administration of antiretroviral drugs, such as children and adults suffering from ENT cancer. It is therefore necessary to offer these patients an alternative: administering the triple therapy in a liquid or well crushed form would be alternatives to a solid tablet, conditional on demonstrating their bioequivalence and that they are well tolerated (taste in particular). Objectives: The investigator's primary intention is to demonstrate the bioequivalence of each of the three active ingredients in Biktarvy® (single daily tablet made up of a set combination of tenofovir alafenamide/emtricitabine/bictegravir: TAF/FTC/BIC) by administering the drug in the forms of a complete and solid tablet (phase S), a tablet dissolved in water (phase D) or a tablet crushed and suspended in apple compote (phase C). The secondary objectives are to compare the safety, tolerance (taste in particular) and preference of healthy volunteers after administration of Biktarvy®, depending on the three methods of oral administration. Equipment and methods: This is a phase I, monocentric, open, three-period, randomised, cross-over trial that will be conducted with 18 healthy volunteers (9 men, 9 women) above the age of 18 in a French university hospital (Caen University Hospital - CHU de Caen). The healthy volunteers will be randomised to receive three different forms (solid, dissolved or crushed) in a varying order, according to the randomisation, at an interval of 14 to 28 days. After each of the three doses, the volunteers will be hospitalised for 24 hours and will then return three times to carry out the pharmacokinetic study with samples taken at the following times: 0 h (right before taking Biktarvy®); 0.5 h; 1 h; 1.5 h; 2 h; 2.5 h; 3 h; 4 h; 8 h; 12 h; 24 h; 36 h; 48 h and 72 h (after Biktarvy®). The plasma concentration in antiretroviral drugs will be analysed by liquid chromatography-mass spectrometry (QTRAP 5500, Sciex, Les Ulis, France) at Orléans Regional Hospital (CHR d'Orléans). The bioequivalence between administration methods D or C will be demonstrated if the confidence interval at 90% (CI 90%) of the ratio parameters Cmax, AUC0-72h and AUC0-? is included in the 80%-125% range of those obtained for administration method S and for the three active ingredients. Hypothesis tested: Oral administration of Biktarvy® tablets dissolved in water (as a liquid solution) or crushed and administered in an apple compote is bioequivalent to the solid form (entire tablet swallowed with water) with regard to the three active ingredients that make up Biktarvy®. This means that these methods could be offered to patients who have difficulties with swallowing tablets. Preliminary data must be obtained using healthy volunteers.

Start: December 2019
A Response Modulation Hypothesis of Socioemotional Processing Associated With Alcohol Use Disorder

Background: Problem drinking affects nearly half the people who drink alcohol. Drinking alcohol affects a person s social behavior and brain structure, but researchers don t have a good understanding of how. They want to test a technique called neurofeedback to learn more about how to treat problem drinking. Objectives: To study what happens in the brains of people who drink alcohol when they look at pictures of social things and of alcohol. To learn if people can control brain activity in a magnetic resonance imaging (MRI) scanner and if this helps people with drinking. Eligibility: Adults ages 21 65 who have an alcohol use disorder. Healthy volunteers ages 21 65 Design: Participants will be screened with Physical exam Medical history Blood, urine, and heart tests Mental health interview Questions about their alcohol drinking. At each session, participants will have: A urine test for drugs and pregnancy. If they test positive, they cannot participate. A breath alcohol test and assessment for alcohol withdrawal. Participants will complete surveys, talk to researchers about behaviors, and play games. Participants will have MRI brain scans. The scanner is a metal cylinder in a strong magnetic field. They will lie on a table that slides in and out of the scanner for 1 2 hours. Participants will do tasks in the scanner: They will look at pictures, sometimes of alcohol. They will try to hit a goal. Some participants will get feedback during this task. They will see how their brain activity changes or how someone else s changes. Participants may have follow-up phone questions at least 3 times over about 6 months.

Start: September 2018
Brain Changes in EEG and Brain Pulsatility to Novel Stimuli (Electro-PulCe)

The oddball paradigm is one of the most widely used methods of brain exploration for the study of attentional processes. It allows the measurement, by means of an Electro-Enchephalogram (EEG), of evoked potentials reflecting the electrophysiological reactivity to the detection of novel stimuli within a stream of standard stimuli. Other studies have recently suggested that, in addition to neuronal activation, certain other physiological processes related to cerebrovascular reactivity, such as the Brain Tissue Pulsatility (BTP), could also be sensitive to various cognitive processes and in particular to attentional processes. In one of the latest studies published in collaboration with our group, it was shown that the amplitude of the electrophysiological response classically associated with attentional activity (P300 wave) was significantly correlated with the amplitude of BTP, suggesting the involvement of cerebrovascular processes in attentional functions. Nevertheless, in this study, the two methods of EEG and Tissue Pulsatility Imaging (TPI) were not synchronized, since TPI was performed at rest and not during the oddball task itself, and to date no study has sought to couple the methods of EEG and ultrasound TPI in an oddball paradigm, for a simultaneous characterization of neuronal and cerebrovascular responsiveness during attentional processes. The general objective of this study will be to evaluate changes in BTP during the detection of novel stimuli in an oddball task in healthy volunteers, in which the two methods of TPI and EEG will be coupled and synchronized.

Start: February 2021