E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
no specific condition, we will investigate children who have been using risperidone on an off-label basis for at least one year. |
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E.1.1.1 | Medical condition in easily understood language |
no specific condition, we will investigate children who have been using risperidone on an off-label basis for at least one year. |
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E.1.1.2 | Therapeutic area | Psychiatry and Psychology [F] - Behavioral Disciplines and Activities [F04] |
MedDRA Classification |
E.1.3 | Condition being studied is a rare disease | No |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
To investigate the behavioral effects of controlled discontinuation as well as the feasibility of discontinuing currently ongoing treatment with risperidone in children and adolescents with behavioral problems who have used risperidone for at least one year. Here, we will be able to establish whether or not long-term use of risperidone is still effective beyond one year of treatment. We will also be able to study physical health correlates after discontinuation. |
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E.2.2 | Secondary objectives of the trial |
(1) to investigate the effects of discontinuation of risperidone on a number of secondary outcome variables (problem behavior and comorbidity, clinical improvement, general functioning and quality of life, parental and family functioning, and neuropsychological functioning) and tolerability ratings (side effects and withdrawal effects, physical measures, and blood counts). (2) to identify moderators and predictors of treatment discontinuation and long-term outcome six months later. This includes treatment duration and compliance, child factors (age, sex, presence of comorbid psychiatric problems, temperamental traits, biologic factors and genetic factors) as well as parent factors (socio-economic status, parental and family factors).
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
In order to be eligible to participate in this study, a subject must meet all of the following criteria: • Be between the ages of six and seventeen years and eight months • Current risperidone use ≥ one year. • Current risperidone doses ≤ 5 mg/day. • IQ > 70 (based on a previous IQ test or attending regular education). • Parents (or the legal guardian) and children (≥ twelve years) have provided informed consent to participate in the study. |
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E.4 | Principal exclusion criteria |
A potential subject who meets any of the following criteria will be excluded from participation in this study: • Risperidone was discontinued for ≥ two months in the last year. • Current psychosis. • Pregnancy. • Risperidone is primarily used for the treatment of psychosis, or tics. • Having parents who are planning to start other psychosocial and pharmacological therapies during the blinded period. • Having parents who are unable to understand or comply with the protocol. • Presence of any other significant disease or disorder which, in the opinion of the investigator, may either put the participants at risk because of participation in the study, or may influence the results of the study, or the participant’s ability to participate in the study.
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E.5 End points |
E.5.1 | Primary end point(s) |
Problem behavior will be assessed by the Nisonger Child Behavior Rating Form-Typical IQ (NCBRF-TIQ; Aman et al, 2008). This 64-item, parent-reported scale contains a Positive Social subscale (10 items) and six Problem Behavior subscales (54 items): (1) Conduct Problems, (2) Oppositional, (3) Hyperactive, (4) Inattentive, (5) Withdrawn/Dysphoric, and (6) Overly Sensitive. A total Disruptive Behavior Disorder score (D-total) and a total ADHD score (ADHD-total) can be calculated. The primary study parameter will be the D-total, which is calculated by adding the scores on the Conduct problems and the Oppositional behavior scale. |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
at baseline, eight weeks, fourteen weeks and after six months naturalistic follow up |
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E.5.2 | Secondary end point(s) |
Secondary outcome measures: - Strength and Difficulties Questionnaire (SDQ) - Retrospective Modified Overt Aggression Scale (R-MOAS) - Conner's Teacher Rating Scale-Revised: short form (CTRS-R:S) - Clinical Global Impression Scale (CGI) - Children's Global Assessment Scale (CGAS) - Kindl-R (quality of life) - Parental Frustration Questionnaire (PFQ) - Amsterdam Neuropsychological Tasks (ANT) - UKU side effect rating scale (UKU-SERS) - Abnormal Involuntary Movement Scale (AIMS) - Barnes Akathisia Scale (BARS) - Unified Parkinson's disease rating scale (UPDRS) - Sleep Disturbances Scale for Children (SDSC) - appetite and life style - Physical Activity Questionnaire (PAQ) - Physical measures: length, weight, waist circumference, heart rate and blood pressure - Blood counts •Metabolism: fasting glucose, insulin, triglycerides, high-density lipoproteins (HDL), low-density lipoproteins (LDL), leptine, and total cholesterol. •Endocrine parameters: prolactin, testosterone, and estradiol. •Bone turnover: P1NP, CTx, osteocalcine, vitamin D, and calcium. •Thyroid function: TSH, T4, and parathyreoid hormone. •Kidney function: creatinine, sodium, and potassium. •Pharmacokinetics: risperidone and 9-hydroxyrisperidone concentrations. •Albumine levels.
Predictor variables: - Demographic data and socio-economic status - Treatment history and psychiatric diagnosis - Tanner stages of pubertal development - genetic polymorphisms (e.g. CYP2D6, CYP3A) - Nijmeegse Ouderlijke Stress Index-kort (NOSI-K) - Alabama Parenting Questionnaire (APQ) - Parent-rating scale for Reactive and Proactive Aggression (PRPA) |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
Secondary outcome measures will be measured at at baseline, eight weeks, fourteen weeks and after six months naturalistic follow up. Predictor variables will be measured at baseline. |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | Yes |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | No |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | Yes |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | No |
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | No |
E.7.4 | Therapeutic use (Phase IV) | Yes |
E.8 Design of the trial |
E.8.1 | Controlled | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | No |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | Yes |
E.8.1.5 | Parallel group | No |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | Yes |
E.8.2.3 | Other | No |
E.8.2.4 | Number of treatment arms in the trial | 2 |
E.8.3 |
The trial involves single site in the Member State concerned
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
E.8.4.1 | Number of sites anticipated in Member State concerned | 4 |
E.8.5 | The trial involves multiple Member States | No |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | No |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.7 | Trial has a data monitoring committee | No |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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The end of the study is defined as the last subject last visit. The study will be terminated prematurely when in line with the revised CCMO Directive on the Assessment of Clinical Trial Agreements. |
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 1 |
E.8.9.1 | In the Member State concerned months | 9 |
E.8.9.1 | In the Member State concerned days | 0 |