There are about 173942 clinical studies being (or have been) conducted in United States. The country of the clinical trial is determined by the location of where the clinical research is being studied. Most studies are often held in multiple locations & countries.
The main objectives of this study are to confirm the long-term safety, performance, and clinical benefits of the G7 Freedom Constrained Vivacit-E Acetabular Liners in primary and revision total hip arthroplasty.
The study is a multicenter, retrospective, non-randomized, non-controlled and consecutive series post-market study. The purpose of this study is to collect data confirming safety, performance and clinical benefits of the ToggleLoc 2.9 mm and the JuggerLoc Soft Tissue Systems when used for soft tissue to bone fixation in the shoulder. The primary objective is the assessment of performance by analyzing soft tissue to bone healing in the shoulder. The secondary objective is the assessment of safety and clinical benefits. Safety will be evaluated by recording and analyzing the incidence and frequency of complications and adverse events. Relation of the events to device, instrumentation and/or procedure will be specified. Clinical benefits will be assessed by recording patient-reported outcome measures (PROMs) at the longest follow-up after surgery (minimum one year).
The goal of the project is to determine the difference in immune activation and HIV reservoir size between People living with HIV (PWH) on tenofovir-containing antiretroviral therapy (ART) versus PWH on nucleoside reverse transcriptase inhibitor (NRTI)-sparing ART. Tenofovir (TFV), a phosphonated nucleoside reverse transcriptase inhibitor (NRTI), is being used for oral pre-exposure prophylaxis (PrEP). The investigators will test this hypothesis: tenofovir, and perhaps NRTIs in general, stimulate a type I/III interferon also in PWH who take these drugs. Because chronic interferon stimulation may promote the survival and proliferation of cells with integrated provirus, the investigators also hypothesize that these drugs antagonize decay of the HIV latent reservoir in PWH on ART. Consequently, the researchers hypothesize that PWH who have switched from NRTI-containing ART to NRTI-sparing ART exhibit lower type I/III interferon pathway activation and lower latent HIV reservoir size. The investigators also hypothesize that independently of treatment, the extent of type I/III interferon activation correlates with latent HIV reservoir size. Thus, the proposed study seeks to answer these two questions. Can the gastrointestinal epithelium be impacted by ART, and contribute to chronic immune activation and expansion of the HIV-1 reservoir? If so, what therapeutic approaches can the investigators implement to reduce the HIV-1 proviral load? The data will reveal pathways that can be targeted therapeutically to treat chronic immune activation in PWH. The findings of this study will immediately translate to optimize the standard of care in PWH.
The proposed project will assess long-term changes to health/lifestyle, advanced planning, and research engagement that Black and White patients with Amnestic Mild Cognitive Impairment (aMCI) make following disclosure of positron emission tomography-based amyloid and tau burden and associated risk of conversion to Dementia-Alzheimer's Type. Healthcare access will be explored as potential barrier to or facilitator of behavior change.
The objective of this retrospective and prospective consecutive series PMCF study is to collect long-term data confirming safety, performance and clinical benefits of the ExploR Radial Head System (implants and instrumentation) when used for radial head arthroplasty.
This is a pilot, feasibility study and the purpose of this study is exploratory. The goal is to provide the PI and study team with data using metabolomics that can be used to: a) demonstrate an ability to use such data in a future grant application; b) obtain data that determines the relationship between changes in physical function (objective and subjective) and potential metabolites.
Previous research by Mental Health Research Network (MHRN) investigators and others demonstrates that online messaging and other telehealth technologies can effectively and efficiently address premature discontinuation of depression treatment. These interventions, however, have focused on adherence after treatment initiation and have been tested primarily in non-Hispanic white populations. Less is known about the acceptability and effectiveness of different communication modalities (online messaging, mailed letters, telephone) among racial and ethnic minority populations. Implementation of electronic-Health (eHealth) technologies must take care not to exacerbate health disparities. This clinical trial involves a pilot trial to evaluate a population-based outreach program to improve rates of depression treatment initiation among traditionally underserved racial and ethnic groups. This pilot work intends to inform a subsequent full-scale pragmatic trial to examine impact on health disparities.
The goal of this open-label extension study is to assess long-term safety and tolerability of simufilam 100 mg in subjects who have completed the RETHINK-ALZ or REFOCUS-ALZ Phase 3 clinical trials.
The purpose of this research is to evaluate a new needle guide grid utilizing Clear Guide SCENERGY - MR with a grid embedded with VisiMARKER II to autoregister and target the prostate aiding in needle placement positioning. The proceduralist can utilize this technology to find the best needle path to target within the pelvis.
School interventions to reduce bullying can be effective but also require substantial time and resources. Online technologies have the potential to deliver effective bullying interventions to a large number of middle school students for less cost. The feasibility of delivering the effective STAC bullying intervention through a mobile web app will be tested using focus groups with middle school students and development and usability testing and the efficacy of the program will be tested using a randomized controlled trial.