Active clinical trials for "Schizophrenia"

This will be a phase IV 20 -32 day prospective, double blind, double-dummy, randomised crossover study that will evaluate the effect of quetiapine XR and quetiapine IR on cognitive performance in patients with schizophrenia stabilized on a single antipsychotic medication.

The current study investigates the basic principles that underlie the efficacy of transcranial direct current stimulation for chronic auditory verbal hallucinations in schizophrenia in a multimodal design.

The purpose of this study is to evaluate safety, tolerability and pharmacokinetics (explores what the body does to the drug) of JNJ-37822681 in participants with stable schizophrenia (psychiatric disorder with symptoms of emotional instability, detachment from reality, often with delusions and hallucinations, and withdrawal into the self).

The purpose of this research study is to measure how many of the dopamine receptors lurasidone occupies throughout the brain of patients with schizophrenia or schizoaffective disorder and over what time period the occupancy occurs. This is research because lurasidone is an investigational medication that has not yet been approved by the Food and Drug Administration (FDA). Dopamine receptors have key roles in many processes, including the control of motivation, learning, and fine motor movement. The degree of occupancy and the transience of occupancy D2 receptor occupancy for optimal clinical response and to prevent relapses is a controversial area that this study will address. In this study Positron Emission Tomography (PET) scanning will be performed with D2/D3 ligand 18F-fallypride (a radioactive, injectable substance) to help the researchers measure the use of these receptors. Researchers hope that quantifying the amount of receptors being occupied by the medication will help them to determine the best dose of study medication in terms of improvement and least side effects related to body size and gender as well as in preventing relapse that may be related to hypersensitivity. Magnetic Resonance Imaging (fMRI) will also be performed. MRI is a scanning method which makes pictures of parts of the brain using a large magnetic field. This study will use a particular kind of MRI called fMRI, or functional MRI. fMRI takes pictures of the brain while the person is thinking or doing a simple task. fMRI will allow the researchers to investigate patients regional brain activation during cognitive (mental) and emotional tasks.

A study to compare the change in symptom severity in participants with schizophrenia or related psychotic disorder when treated with GWP42003 or placebo in conjunction with existing anti-psychotic therapy over a period of six weeks.

The primary aim of the study is to determine the efficacy of adjunctive valacyclovir, in comparison to placebo, to improve visual (Brief Visuospatial Memory Test) and working (composite score of the Spatial Span and Letter Number Span tests) memory in individuals who are HSV-1 positive and early in the course of schizophrenia. We hypothesize that individuals who are HSV-1 positive, but not those who are HSV-1 negative, will demonstrate significant valacyclovir efficacy for visual and working memory.

The purpose of this study is to determine the feasibility (≥ 50% completion rate) of a 6-week nutrition, movement, and mindfulness program for youth with recent diagnosis of psychosis.

The purpose of this study is to evaluate the efficacy, safety, and tolerability of two doses (12.5 and 50 mg) of NBI-98854 administered once daily (q.d.) for the treatment of tardive dyskinesia in subjects with schizophrenia or schizoaffective disorder.

In the Bergen Psychosis Project 2 the antipsychotic drugs aripiprazole, amisulpride, and olanzapine will be compared head-to-head in patients with schizophrenia and related psychoses and followed for 12 months. The study is independent of the pharmaceutical industry, and in accordance with a pragmatic design a clinically relevant sample will be included with as few exclusion criteria as possible. The patients will be assessed repeatedly with regards to symptoms, side effects, and cognitive functioning, as well as laboratory parameters. The study hypothesis is that clinically meaningful differences among the drugs will be disclosed in a pragmatic design.

This is an open-label continuation study designed to monitor the safety, tolerability and effectiveness of lurasidone in subjects who have completed participation in a lurasidone extension study (NCT00868959 and NCT01566162) and who may benefit from continued treatment with lurasidone.