Striatal Connectivity and Clinical Outcome in Psychosis
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|ClinicalTrials.gov Identifier: NCT02822092|
Recruitment Status : Recruiting
First Posted : July 4, 2016
Last Update Posted : March 29, 2018
|Condition or disease||Intervention/treatment|
|Psychotic Disorders||Drug: Risperidone (patients only)|
In this proposed study, the study will examine treatment-related effects on functional brain circuitry in first episode schizophrenia. Converging lines of evidence suggest a key role for striatal disconnectivity in the pathophysiology of psychosis. The proposed study will utilize resting state functional magnetic resonance imaging (rs-fMRI), as well as fMRI tasks derived from the Research Domain Criteria (RDoC) framework, to: 1) develop and validate a prognostic biomarker to predict antipsychotic treatment response; and 2) to model the underlying neural circuitry changes associated with state changes in psychotic symptomatology. As a prognostic biomarker, a neuroimaging assay of striatal connectivity can potentially provide a clinically useful tool to advance the goal of precision medicine. As a longitudinal index of symptom change, our model can serve as an objective index against which to measure potential efficacy of newly developed antipsychotic treatments.
A large, well-characterized cohort of patients presenting with a first episode active psychosis (regardless of DSM diagnosis) will be recruited, along with matched controls. The study will utilize two well-validated fMRI tasks capturing two portions of the positive valence system: probabilistic category learning and reward responsiveness; these tasks are designed to interrogate dorsal and ventral corticostriatal circuits, respectively. The design will be longitudinal, with two scanning sessions performed for each patient: at baseline, and after 12 weeks of treatment. Treatment will be standardized across all patients to reduce potential confounds, and healthy controls will also be scanned at baseline and 12 weeks in order to control for effects of time and practice. Level of psychotic symptomatology (hallucinations, delusions, and thought disorder) will be measured at regular intervals using a comprehensive battery of rating scales. As secondary measures, electroencephalography (EEG) will be performed coinciding with neuroimaging on a subset of patients who provide consent. We will utilize Kaplan-Meier estimators and hierarchical linear modeling to examine the association of baseline striatal connectivity, and changes in connectivity over time, with clinical response of psychotic symptoms to antipsychotic treatment. Deliverables will include both baseline and longitudinal biomarkers that can subsequently be tested in broader, more heterogeneous populations of patients with psychosis.
|Study Type :||Observational|
|Estimated Enrollment :||170 participants|
|Official Title:||Striatal Connectivity and Clinical Outcome in Psychosis|
|Study Start Date :||July 2016|
|Estimated Primary Completion Date :||October 2021|
|Estimated Study Completion Date :||October 2022|
Patients with Psychotic Disorders taking Risperidone
Risperidone will be administered. Subjects will start risperidone 1 mg qhs; on day 4 the daily dose will be increased to 2 mg and to 3 mg at day 7. The target risperidone dose is 3 mg daily but patients who remain psychotic can be increased to 4 mg day at week 4; 5 mg at week 6 and 6 mg at week 8. Study Psychiatrists will be able to increase faster if symptoms don't improve as well as decrease for side effects. These dose ranges conform with standard clinical practice and are within the FDA approved dosing ranges for schizophrenia, and schizoaffective disorder. Subjects advance in the risperidone titration schedule until they respond or develop dose-limiting side effects.
Drug: Risperidone (patients only)
Inpatients deemed eligible for the study, we be put on open-label risperidone
Other Name: Risperidal
Healthy Volunteers will participate in MR imaging, Electroencephalogram , and cognitive testing.
- efficacy of risperidone for psychotic symptoms [ Time Frame: 12 weeks ]To examine the efficacious treatment of psychotic symptoms with risperidone measured by specific items on the Brief Psychiatric Rating Scale - conceptual disorganization, grandiosity, hallucinatory behavior, unusual thought content
- Relationship between efficacious treatment of psychotic symptoms and changes in functional connectivity of the striatum [ Time Frame: 12 weeks ]To examine the relationship between efficacious treatment of psychotic symptoms (measured by the Brief Psychiatric Rating Scale) and changes in functional connectivity of the striatum, calculated from fMRI scans
- Predicting treatment efficacy from baseline fMRI scans [ Time Frame: 12 weeks ]To examine whether baseline fMRI scans can predict treatment efficacy which will be measured by the Brief Psychiatric Rating Scale.
Biospecimen Retention: Samples Without DNA
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02822092
|Contact: Anil Malhotra, MDemail@example.com|
|Contact: Whitney Muscatfirstname.lastname@example.org|
|United States, New York|
|Zucker Hillside Hospital||Recruiting|
|Glen Oaks, New York, United States, 11004|
|Contact: Anil Malhotra, MD 718-470-8012 email@example.com|
|Contact: Whitney Muscat 7184704152 firstname.lastname@example.org|
|Principal Investigator:||Anil Malhotra, MD||The Zucker Hillside Hospital|