Schizophrenia | Quetiapine Extended Release (XR) for the Management of Psychotic Aggression or Agitation in Adult Acute Psychiatry

Schizophrenia research study

What is the primary objective of this study?

This study is a multi-site study examining the use of Quetiapine XR for psychotic aggression in an acute psychiatric setting. The study aims to demonstrate that management with Quetiapine XR significantly reduces aggressive behaviour in acute patients with psychosis, significantly reduces psychotic symptoms and decreases the requirement for sedation using benzodiazepines.

Who is eligible to participate?

Inclusion Criteria: 1. Males or Females aged 18-65 years; 2. Determined by a psychiatrist to be experiencing acute psychotic symptoms (includes mania with psychotic features and drug-induced psychosis); 3. Determined by a psychiatrist to have acted aggressively (score of > 1 on the OAS); 4. Inpatient status at enrollment; 5. Patient agreement to take oral medication; 6. Provision of written informed consent when considered able to provide consent by the treating team; 7. Female patients of childbearing potential must be using a reliable method of contraception and have a negative urine human chorionic gonadotropin (HCG) test at enrollment. Exclusion Criteria: 1. Pregnancy or lactation; 2. Any DSM-IV Axis I disorder not defined in the inclusion criteria; 3. Patients who, in the opinion of the investigator, pose an imminent risk of suicide or a danger to self or others; 4. Known intolerance or lack of response to quetiapine fumarate or any other atypical psychotics, as judged by the investigator; 5. Use of any of the following cytochrome P450 3A4 inhibitors in the 14 days preceding enrolment including but not limited to: ketoconazole, itraconazole, fluconazole, erythromycin, clarithromycin, troleandomycin, indinavir, nelfinavir, ritonavir, fluvoxamine and saquinavir; 6. Use of any of the following cytochrome P450 inducers in the 14 days preceding enrolment including but not limited to: phenytoin, carbamazepine, barbiturates, rifampin, St. John's Wort, and glucocorticoids; 7. Administration of a depot antipsychotic injection within one dosing interval (for the depot) prior to being recruited for the trial; 8. Patients receiving treatment with an antipsychotic other than Seroquel XR (either IM or oral) within one dosing interval prior to being recruited for the trial; 9. Patients receiving treatment with mood stabiliser or anti-depressant medication within 7 days prior to treatment with Seroquel XR; 10. Substance or alcohol abuse or dependence at enrolment (except dependence in full remission, and except for caffeine or nicotine dependence), as defined by DSM-IV criteria; 11. Medical conditions that would affect absorption, distribution, metabolism, or excretion of study treatment; 12. Unstable or inadequately treated renal, hepatic, cardiovascular, respiratory, cerebrovascular, or other serious progressive physical disease as judged by the investigator; 13. Involvement in the planning and conduct of the study; 14. Previous enrolment in the present study; 15. Participation in another drug trial within 4 weeks prior enrolment into this study or longer in accordance with local requirements; 16. A patient with Diabetes Mellitus (DM) fulfilling one of the following criteria: - Unstable DM defined as enrolment glycosylated hemoglobin (HbA1c) >8.5%; - Admitted to hospital for treatment of DM or DM related illness in past 12 weeks; - Not under physician care for DM; - Physician responsible for patient's DM care has not indicated that patient's DM is controlled; - Physician responsible for patient's DM care has not approved patient's participation in the study; - Has not been on the same dose of oral hypoglycaemic drug(s) and/or diet for the 4 weeks prior to randomisation. For thiazolidinediones (glitazones) this period should not be less than 8 Weeks; - Taking insulin whose daily dose on one occasion in the past 4 weeks has been more than 10% above or below their mean dose in the preceding 4 weeks. 17. An absolute neutrophil count (ANC) of > 1.5 x 109 per liter; 18. Refusal to take oral medication and intramuscular antipsychotic medication is administered instead.

Which medical condition, disease, disorder, syndrome, illness, or injury is researched?



Study Interventions

Interventions can include giving participants drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available or noninvasive approaches such as surveys, education, and interviews.

Drug:Quetiapine XRThe daily dose of oral Quetiapine XR at the start of therapy is 300 mg on Day 1, 600 mg on Day 2 and up to 800 mg after Day 2. The dose will be adjusted within the usual effective dose range of 400 to 800 mg/day, depending on the clinical response and tolerability of the individual patient.

Study Arms

Research studies and clinical trials typically have two or more research arms. An arm is a group of people who receive the same treatment in the study.

Quetiapine XRThe study population will be patients admitted to the acute psychiatry inpatient wards of St Vincent's or the Alfred and determined by a Psychiatrist to be experiencing a psychotic illness (including mania with psychotic features and drug-induced psychosis) and acting in an aggressive manner (determined by a score of at least 1 on the OAS).

Study Status

Unknown status

Start Date: October 2009

Completed Date: October 2010

Phase: Phase 4

Type: Interventional


Primary Outcome: The primary efficacy variable is the change in aggression between admission and day 8 of treatment with Quetiapine XR as measured by the OAS.

Secondary Outcome: Measuring psychotic symptomatology change from baseline in BPRS-Total Score in aggressive, psychotic patients managed with Quetiapine XR

Study sponsors, principal investigator, and references

Principal Investigator: Jayashri Kulkarni, Prof

Lead Sponsor: Bayside Health

Collaborator: AstraZeneca

More information:

Discuss Seroquel