Antipsychotic Response to Clozapine in B-SNIP Biotype-1 (Clozapine)
University of Texas Southwestern Medical Center
Summary
The CLOZAPINE study is designed as a multisite study across 5 sites and is a clinical trial, involving human participants who are prospectively assigned to an intervention. The study will utilize a stringent randomized, double-blinded, parallel group clinical trial design. B2 group will serve as psychosis control with risperidone as medication control. The study is designed to evaluate effect of clozapine on the B1 participants, and the effect that will be evaluated is a biomedical outcome. The study sample will be comprised of individuals with psychosis, including 1) schizophrenia, 2) schizoaffective disorder and 3) psychotic bipolar I disorder. The investigators plan to initially screen and recruit n=524 (from both the existing B-SNIP library and newly-identified psychosis cases, \~50% each) in order to enroll n=320 (B1 and B2) into the RCT.
Description
The clinical hypotheses underlying this experiment are that (i) B1 individuals are uniquely responsive to the pharmacological properties of clozapine because they have low Intrinsic EEG Activity (IEA), an index of compromised cortical neuronal responsiveness. This is plausibly associated with both (ii) reduced excitatory and (iii) reduced inhibitory stimulation in cortex and that IEA will track this altered excitatory/inhibitory balance and parallel clinical antipsychotic response. Furthermore, (iv) B2 probands (based on their high IEA) will not respond to clozapine. In this study clozapine re…
Eligibility
- Age range
- 18–60 years
- Sex
- All
- Healthy volunteers
- No
Inclusion Criteria: * 18-60y/o; males and females; all races and ethnicities; able to provide written informed consent; able to read, speak, and understand English; medically stable; meeting DSM-IV (SCID-based) criteria for schizophrenia, schizoaffective disorder, or bipolar I disorder with psychotic features (we will use DSM-IV to be consistent with prior B-SNIP samples); PANSS total score of ≥70 and at least one item scored ≥5 or two items scored ≥4 on PANSS Positive Subscale; normal baseline values for absolute neutrophil count (ANC above 1500/mm3) Exclusion Criteria: * premorbid intelle…
Interventions
- Drugclozapine
Biotype 1 and Biotype 2
- Drugrisperidone
Biotype 1 and Biotype 2
Locations (5)
- Hartford HealthcareHartford, Connecticut
- University of GeorgiaAthens, Georgia
- University of ChicagoChicago, Illinois
- Beth Israel Deaconess Medical CenterBoston, Massachusetts
- UT Southwestern Medical CenterDallas, Texas