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Discover 20,239 clinical trials near Tennessee. Find research studies in your area.
Showing 10681-10700 of 20,239 trials
NCT02705677
The overarching purpose of this study is to advance understanding of the natural history of Rett syndrome (RTT), MECP2-duplication disorder (MECP2 Dup), RTT-related disorders including CDKL5, FOXG1, and individuals with MECP2 mutations who do not have RTT. Although all these disorders are the result of specific genetic changes, there remains broad clinical variation that is not entirely accounted for by known biological factors. Additionally, clinical investigators currently do not have any biomarkers of disease status, clinical severity, or responsiveness to therapeutic intervention. To address these issues, biological materials (DNA, RNA, plasma, cell lines) will be collected from affected individuals and in some cases from unaffected family members, initial evaluation performed to identify additional biological factors contributing to disease severity, and these materials will be stored for future characterization.
NCT04277936
The purpose of this study is to test whether administration of levetiracetam (LEV), a commonly used anti-epileptic that alters neurotransmitter release, can reduce hippocampal hyperactivity. Specifically, we will utilize two functional magnetic resonance imaging (MRI) techniques: 1) blood oxygen level dependence (BOLD) contrast will assess activity with a visual scene processing task that engages the anterior hippocampus and 2) arterial spin labeling (ASL) will assess baseline activity. This study will also assess whether patients have improvement in their symptoms after receiving LEV. Previous studies in people with psychotic disorders have shown that the hippocampus is hyperactive and more activity correlates with worsening of clinical symptoms. Therefore, the aim of this study is to use an intervention to further understand the underlying mechanisms of the hippocampus in psychosis.