Trial Evaluating Three Fixed Doses of Paliperidone Extended-Release (ER) Tablets and Olanzapine in the Treatment of Patients With Schizophrenia
A Randomized, Double-blind, Placebo- and Active-controlled, Parallel-group, Dose-response Study to Evaluate the Efficacy and Safety of 3 Fixed Dosages of Paliperidone Extended Release (ER) Tablets and Olanzapine, With Open-label Extension, in the Treatment of Patients With Schizophrenia
研究概览
详细说明
Paliperidone is being developed as a new therapeutic agent for the treatment of schizophrenia. The extended-release (ER) formulation of paliperidone was developed to deliver paliperidone at a relatively constant rate over a 24-hour period to improve the tolerability profile and decrease the potential for orthostatic hypotension. This study is designed to evaluate the efficacy and safety and tolerability of 3 dosages of paliperidone ER compared with placebo in adult patients with schizophrenia. This is a multicenter, double-blind, randomized, placebo- and active-controlled, parallel-group, dose-response study. Patients will be randomized into 1 of 5 treatment groups to receive oral dosages of paliperidone ER 3, 9, or 15 mg, olanzapine 10 mg, or placebo once daily for a 6-week period. The study includes a screening period of up to 5 days, followed by a 6-week double-blind treatment phase. Following the double-blind treatment phase, eligible patients (those who have completed the 6-week double-blind phase or who discontinue due to lack of efficacy after a minimum of 21 days) may enter the 52-week open-label extension with paliperidone ER monotherapy. While patients are hospitalized, efficacy will be assessed twice during the first week and at the end of the second week, and after patients are discharged from the hospital, they will return to have efficacy and safety assessments performed on a weekly basis through the end of the 6-week double-blind phase. Efficacy will be evaluated throughout the 6-week double-blind phase by completion of the Positive and Negative Syndrome Scale (PANSS), Clinical Global Impression Scale - Severity (CGI-S), Personal and Social Performance Scale (PSP), and Schizophrenia Quality of Life Scale, Revision 4 (SQLS-R4). The primary efficacy response will be measured by the change from baseline score to end of double-blind phase for PANSS total score. Safety will be monitored throughout the study and includes assessments of the incidence of adverse events; measurement of extrapyramidal symptoms using 3 rating scales (Abnormal Involuntary Movement Scale [AIMS], Barnes Akathisia Rating Scale [BARS], Simpson-Angus Rating Scale [SAS]); measurement of vital signs (laying down and standing blood pressure, pulse, temperature); electrocardiograms; and clinical laboratory tests. Double-blind phase: 3, 9, 15 mg of paliperidone ER, 10 mg of olanzapine or placebo taken orally once a day for 6 weeks.
Open-label phase: start on paliperidone ER 9 mg orally once a day; maintained on a flexible oral dosage of paliperidone ER (3, 6, 9, 12, or 15 mg/day) for 52 weeks.
研究类型
注册 (实际的)
阶段
- 第三阶段
参与标准
资格标准
适合学习的年龄
接受健康志愿者
有资格学习的性别
描述
Inclusion Criteria:
- Double-blind phase: DSM-IV diagnosis of schizophrenia for at least 1 year
- experiencing an acute episode, with a total PANSS score at screening between 70 and 120
- agree to voluntary hospitalization for a minimum of 14 days
- willing and able to fill out self-administered questionnaires
- must be able to be compliant with self-administration of medication, or have consistent help/support available.
Open-label phase: have completed the 6 weeks of double-blind treatment or completed at least 21 days of treatment and discontinued due to lack of efficacy
- patient and investigator must agree that open-label treatment is in the best interest of the patient.
Exclusion Criteria:
- Double-blind phase: DSM-IV axis I diagnosis other than schizophrenia
- DSM-IV diagnosis of substance dependence within 6 months prior to screening evaluation (nicotine and caffeine dependence are not exclusionary)
- history of tardive dyskinesia or neuroleptic malignant syndrome (NMS)
- history of any severe preexisting gastrointestinal narrowing (pathologic or iatrogenic)
- previous history of a lack of response (2 adequate trials) to any antipsychotic
- significant risk of suicidal or violent behavior. Open-label extension: patients believed by the investigator to be at significant risk for suicidal or violent behavior
- received an injection of a depot antipsychotic since entry into the preceding double-blind phase.
学习计划
研究是如何设计的?
设计细节
- 主要用途:治疗
- 分配:随机化
- 介入模型:并行分配
- 屏蔽:双倍的
研究衡量的是什么?
主要结果指标
结果测量 |
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Change from baseline in the total PANSS score to the end of the double-blind phase.
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次要结果测量
结果测量 |
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PSP、CGI-S 和 SQLS-R4 中从基线到双盲阶段结束的变化。
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合作者和调查者
出版物和有用的链接
一般刊物
- Davidson M, Emsley R, Kramer M, Ford L, Pan G, Lim P, Eerdekens M. Efficacy, safety and early response of paliperidone extended-release tablets (paliperidone ER): results of a 6-week, randomized, placebo-controlled study. Schizophr Res. 2007 Jul;93(1-3):117-30. doi: 10.1016/j.schres.2007.03.003. Epub 2007 Apr 26. Erratum In: Schizophr Res. 2007 Nov;96(1-3):273-4.
- Meltzer HY, Bobo WV, Nuamah IF, Lane R, Hough D, Kramer M, Eerdekens M. Efficacy and tolerability of oral paliperidone extended-release tablets in the treatment of acute schizophrenia: pooled data from three 6-week, placebo-controlled studies. J Clin Psychiatry. 2008 May;69(5):817-29. doi: 10.4088/jcp.v69n0515.
研究记录日期
研究主要日期
学习开始
研究完成 (实际的)
研究注册日期
首次提交
首先提交符合 QC 标准的
首次发布 (估计)
研究记录更新
最后更新发布 (估计)
上次提交的符合 QC 标准的更新
最后验证
更多信息
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