Skip to main content
OpenTrials
Completed

NCT Number: NCT02109562

Randomized, Double-blind, Placebo Controlled, Multi-center and Tolerability of RBP-7000 in Schizophrenia Patients

The purpose of this study is to evaluate the efficacy and safety of RBP-7000 compared with placebo in the treatment of patients with schizophrenia.

This will be a double-blind, placebo-controlled, Phase III study with 90 mg and 120 mg doses of RBP-7000 compared with placebo over an 8-week treatment period.

Completed

Looking for future studies?

Notify Me

Key information

Age range

18 year–55 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 3

Primary location

Woodland International Research Group, Inc., Little Rock, Arkansas, United States

Loading trial locations.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Males and females between the ages of 18 to 55 years, inclusive
  • Diagnosis of schizophrenia as defined by Diagnostic and Statistical Manual, Edition 4, text revision (DSM-IV-TR) criteria
  • Subjects who are deemed "valid" by the State, Assessability, Face, Ecological, and Rule (SAFER) interview
  • Subjects who are otherwise healthy on the basis of their physical examination

Exclusion criteria

  • Subjects who have an improvement in their total Positive and Negative Syndrome Scale (PANSS) score of 20% or greater between the initial screening visit and the first day of treatment.
  • Subjects taking daily oral risperidone at a dose ≥ 6 mg/day
  • Subjects who have received a depot antipsychotic within 120 days of screen
  • Subjects with treatment resistant schizophrenia, as judged by the investigator, who have been treated with antipsychotics for adequate durations and with adequate dosages.

Treatment and study plan

RBP-7000

Drug

RBP-7000 90 mg and 120 mg were a mixture of the ATRIGEL Delivery System and 90 mg and 120 mg risperidone, respectively. The ATRIGEL Delivery System allows for sustained-release of risperidone in a controlled manner. Subcutaneous RBP-7000 injections on Days 1 and 29 in the lower quadrant of the abdomen rotating right and left on day 1 and 29.

Other names: risperidone in Atrigel

Placebo

Drug

Subcutaneous injection of placebo using the ATRIGEL Delivery System on Days 1 and 29 in the lower quadrant of the abdomen rotating right and left on day 1 and 29.

Risperidone

Drug

Oral risperidone 0.25 mg tablets daily for the first two days of the screening period. The two 0.25 mg tablets confirmed whether study participants had any negative reaction to risperidone prior to receiving a long-acting injection of risperidone (RBP-7000).

Other names: Risperdal

Primary outcomes

  1. Mixed Model for Repeated Measures (MMRM) Analysis of Change From Baseline to End of Treatment in the Positive and Negative Syndrome Scale (PANSS) Total Score

    Time frame: Day 1 prior to treatment (Baseline), Days 15, 29, 43 and 57 or early discontinuation

    The PANSS is a 30-item scale designed to assess various symptoms of schizophrenia including delusions, grandiosity, blunted affect, poor judgement, poor attention, and poor impulse control. The 30 symptoms are rated on a 7-point scale that ranges from 1 (absent) to 7 (extreme psychopathology). The PANSS total score is the sum of all 30 PANSS items and ranges from 30 to 210, with 30 indicating absence of symptoms of schizophrenia and 210 indicating extreme ratings of all 30 symptoms. Negative change from baseline scores indicate improvements in symptoms.

    Estimates (least square means and standard errors), 2-sided confidence intervals, and -1-sided P values are based on a repeated-measures linear regression model of the change from baseline score, with fixed effects for visit as a categorical variable, baseline score, treatment and treatment by visit interaction, assuming an unstructured covariance matrix.

Secondary outcomes

  1. Mixed Model for Repeated Measures (MMRM) Analysis of Change From Baseline to End of Treatment in Clinical Global Impression - Severity Scale (CGI-S)

    Time frame: Day 1 prior to treatment (Baseline), Days 15, 29, 43 and 57 or early discontinuation

    The CGI-S rating scale is a 7-point global assessment that measures the clinician's impression of the severity of illness exhibited by a participant. A rating of 1 is equivalent to "Normal, not at all ill" and a rating of 7 is equivalent to "Among the most extremely ill participants". Negative change from baseline scores indicate improvement in the severity of illness.

    Estimates (least square means and standard errors), 2-sided confidence intervals, and -1-sided P values are based on a repeated-measures linear regression model of the change from baseline score, with fixed effects for visit as a categorical variable, baseline score, treatment and treatment by visit interaction, assuming an unstructured covariance matrix.

  2. Summary of Participants With Treatment-Emergent Adverse Events (TEAE)

    Time frame: Day 1 to Week 8

    An adverse event (AE) is defined as any study-related event that represents a change (positive or negative) in frequency or severity from a baseline (prestudy) event (if any), regardless of the presence of causal relationship or medical significance. Treatment-emergent adverse events are defined as any adverse event with a start date on or after the first study dose date. AEs are determined by the Investigator to be related or not related to the study drug.

    A serious AE (SAE) is defined by federal regulation as any AE occurring at any dose that results in any of the following outcomes: death, life-threatening AE, hospitalization or prolongation of existing hospitalization, a persistent or significant disability/incapacity, or a congenital anomaly/birth defect. Although a subject may have had 2 or more adverse experiences the subject is counted only once in a category. The same subject may appear in different categories.

Sponsors and collaborators

Lead sponsor

Indivior Inc.

Industry

Registry information

Official study title

A Phase 3, Randomized, Double-Blind, Placebo-Controlled, Multicenter Study to Evaluate the Efficacy, Safety and Tolerability of RBP-7000 as a Treatment in Subjects With Acute Schizophrenia Over 8 Weeks (2 Subcutaneous Doses)

Important dates

Study start
2014
Primary completion
2014
Study completion
2014
First posted
Apr 10, 2014
Registry last updated
Oct 26, 2018

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Published trials that share one or more normalized conditions with this study.