E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
no specific condition, we will investigate people with intellectual disability 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 people with intellectual disability 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 |
The primary objective of this study is: To study the effect of controlled discontinuation of long-term used risperidone, for the treatment of challenging behavior, on behaviour and health. Our hypothesis is that long-term use of risperidone for challenging behaviour is not more effective than a placebo. |
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E.2.2 | Secondary objectives of the trial |
1) To study the effect of controlled discontinuation on physical health parameters, including physical parameters of side-effects.
2) To study the effect of controlled discontinuation of risperidone on Health-related Quality of Life (HQoL).
3) To study whether there is an association between HQoL and severity of challenging behaviour and physical health parameters.
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
1. IQ<70 as assessed by an authorized behavioral therapist
2. Age > 6 years
3. No history of chronic psychosis
4. Risperidone use>1 year
5. Challenging behavior was the reason of prescription of risperidone
6. Informed consent obtained from legal representative
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E.4 | Principal exclusion criteria |
1. A history of schizofrenia, a bipolar disorder, or affective psychosis according to DSM IV or ICD-10 criteria
2. A history of unsuccessful withdrawal of antipsychotics in the past 6 months
3. The use of other antipsychotics in addition to risperidone use
4. Risperidone is administered as long-acting injections
5. Clients that do not receive 24 hour/a day care (by either a service provider or parents/family)
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E.5 End points |
E.5.1 | Primary end point(s) |
The primary end point is behaviopr meassured by the irritability subscale of the Aberrant Behaviour Checklist (ABC). The ABC was developed to assess (pharmaceutical) treatment effects on the challenging behaviors of people with intellectual disability (35-37). The ABC has 58 items divided over five subscales i.e., irritability (15 items), lethargy (16 items), stereotypic behavior (7 items), hyperactivity (16 items) and inappropriate speech (4 items). |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
Baseline, week 6, 10, 14, 18, blinded follow-up at week 24 and natural follow-up at week 42. |
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E.5.2 | Secondary end point(s) |
- Other ABC subscales
- Clinical Global Impression Scale (CGI)
- Abnormal Involuntary Movement Scale (AIMS)
- Barnes Akathisia Rating Scale (BARS)
- Unified Parkinsons Disease Rating Scale (UPDRS)
- Scales for Outcomes in Parkinson’s disease AUTonomic symptoms (SCOPA-AUT)
- Epworth Sleepiness Scale (ESS)
- Personal Outcome Scale (POS)
- RAND-36
- Physical measures: length, weight, waist circumference, heart rate and blood pressure
- Blood counts
From a blood draw, we will obtain measures on:
•Metabolism: fasting glucose, insulin, triglycerides, high-density
lipoproteins (HDL), low-density lipoproteins (LDL), leptine, total
cholesterol, and HbA1C.
•Endocrine parameters: prolactin, testosterone
•Bone turnover: P1NP, CTx, osteocalcine, BAF, vitamin D, and calcium.
•Thyroid function: TSH, T4, and parathyreoid hormone.
•Pharmacokinetics: risperidone and 9-hydroxyrisperidone
concentrations.
•Albumine, creatine, potasium and sodium levels.
Predictor variables:
- Demographic data and socio-economic status
- Treatment history and psychiatric diagnosis
- Tanner stages of pubertal development
- Challenging Behavior Self-Efficacy Scale
- the Emotional Reactions to Challenging Behavior Scale
- knowledge of psychotropic drugs
- beliefs of caregivers |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
All questionnaires (excl POS and RAND-36): Baseline, week 6, 10, 14, 18, blinded follow-up at week 24 and natural follow-up at week 42.
POS and RAND-36: Baseline, week 10, 18, blinded follow-up at week 24 and natural follow-up at week 42.
Blood counts: Baseline, 18, blinded follow-up at week 24
predictor variables: 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 | No |
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 | 5 |
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 | 2 |
E.8.9.1 | In the Member State concerned months | 0 |
E.8.9.1 | In the Member State concerned days | 0 |