E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Attention Deficit Hyperactivity Disorder |
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E.1.1.1 | Medical condition in easily understood language |
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E.1.1.2 | Therapeutic area | Psychiatry and Psychology [F] - Behaviours [F01] |
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 purpose of this study is to investigate whether Placebo Controlled Titration (PCT) leads to an optimization of the use of MPH in clinical practice. The hypotheses are that:
1.PCT is more sensitive in detecting placebo- and non-responders compared to stepwise titration. Therefore, the number of placebo- and non-responders that are detected will be higher in the PCT group;
2.PCT leads to a more optimal dose, with better ADHD and ODD symptom reduction and less side effects, compared to stepwise titration;
3.The maintenance dose is reached faster and with less pharmacological changes in the PCT group compared to stepwise titration.
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E.2.2 | Secondary objectives of the trial |
Secondary Objectives
The second objective of this research is to develop a user-friendly titration method that will help therapists to make objective decisions about titration. We expect that:
4. Parents’, teachers’ and therapists’ satisfaction about titration is higher in PCT compared to stepwise titration |
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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:
1.ADHD diagnosis according to the DSM-V criteria (all subtypes), by a therapist;
2.Indication for treatment with short-acting MPH;
3.Age between 6 and 12 years;
4.Attending (any type of) primary school;
5.Parents and teachers master the Dutch language to such a degree that they may read and understand the questionnaires that need to be filled out as part of 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:
1.Counter-indication for the start-up of MPH. For example, MPH can be contraindicated in patients with Gilles de la Tourette, cardiac problems, or bipolar disorder.
2.Treated with MPH in the last 6 months, in order to be able to evaluate the children's behavior over a period without medication at baseline (the start of the RCT).
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E.5 End points |
E.5.1 | Primary end point(s) |
Primary study parameter(s)
The main hypotheses tested in this study are:
1.The number of placebo- and non-responders that are detected will be higher in the PCT group. The main outcome measure to test this hypothesis is the proportion of children who continue MPH treatment after titration, measured both at T2 and T3, for each treatment condition. The proportion of children who continue treatment is determined by the number of children who are still being prescribed MPH at T2 or T3, divided by the total number of children who entered the trial in the respective treatment condition. Secondary analyses will evaluate whether the proportion of placebo- and non-responders is similar to previously reported numbers (e.g. by the MTA-study) by calculating the proportion of placebo- and non-responders within the PCT group.
2.Children in the PCT group who continue treatment with MPH will be treated more optimally with MPH: they will show a greater reduction of ADHD and ODD behaviors, and have fewer side effects in comparison to the stepwise titration group. ADHD and ODD behaviors are assessed by the Disruptive Behavioral Rating Scale (Oosterlaan, Scheres, Antrop, Roeyers, & Sergeant, 2000) at baseline, T2, and T3. Both at T2 and T3, we will compare the reduction in symptoms over time (T2 or T3 minus baseline) between the two treatment groups. Side effects will be represented by the number and severity of side effects, as assessed by the side effect rating scale, and will be compared between the two treatment groups.
3.The optimal (maintenance) dose is reached quicker in the PCT group compared to stepwise titration. At T2 and T3, the therapist will report on dose changes, and the currently used dose, in follow-up questionnaires. The maintenance dose is determined as the currently prescribed dose at T3. We will compare the two treatment groups for mean time needed (in days) to reach the maintenance dose, and the number of changes in the dose during the entire titration period (T1 - T3).
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
Subjects wille be evalueted for primary end points at baseline 9T), after 8 weeks (T2) and after 6 months (T3). |
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E.5.2 | Secondary end point(s) |
The secondary hypothesis tested in this study is that satisfaction with the titration method will be higher for PCT compared with stepwise titration for parents, teachers and therapists. For all informants, an aggregate score for satisfaction will be composed based on the satisfaction questionnaire. This score will be compared between the two treatment groups at T2 and T3. Additionally, results of the satisfaction questionnaires will be evaluated in a qualitative manner. Concerns and suggestions raised by parents, teachers and therapists will be discussed in the research team in order to optimize the use of PCT in clinical practice |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
Subjects wille be evalueted for secondary end points at baseline 9T), after 8 weeks (T2) and after 6 months (T3) |
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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 | Yes |
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 | No |
E.8.1.5 | Parallel group | No |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | Yes |
E.8.1.7.1 | Other trial design description |
The study is open for the titration methods, for teh PCT group the titration is double blind. |
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E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | Yes |
E.8.2.3.1 | Comparator description |
Other titration procedure. |
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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 | 3 |
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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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 3 |
E.8.9.1 | In the Member State concerned months | 0 |
E.8.9.1 | In the Member State concerned days | 0 |