E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
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E.1.1.1 | Medical condition in easily understood language |
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E.1.1.2 | Therapeutic area | Diseases [C] - Congenital, Hereditary, and Neonatal Diseases and Abnormalities [C16] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 17.1 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10029270 |
E.1.2 | Term | Neurofibromatosis, type 1 (von Recklinghausen's disease) |
E.1.2 | System Organ Class | 100000004850 |
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E.1.3 | Condition being studied is a rare disease | Yes |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
The objective of this proposal is to find proof-of-principle for an effect of Lamotrigine on cognitive functioning in adolescents with Neurofibromatosis type 1. |
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E.2.2 | Secondary objectives of the trial |
Secondary objectives are the evaluation of the safety and the effect of lamotrigine on subdomains of cognitive function, intra-cortical inhibition and LTP-like plasticity. |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
• NF1 patients with a genetically confirmed diagnosis • Age 12-17.5 years at inclusion • Oral and written informed consent by parents and assent from participants |
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E.4 | Principal exclusion criteria |
• Segmental NF1 • Hearing problems or deafness • Use of the following medication: fenytoïn, carbamazepine, fenobarbital, primidon, rifampicine, atazanavir/ritonavir, lopinavir/ritonavir, oxcarbazepine, topiramate, oral contraceptive pill (with stopweek, containing both oestrogen and progestagen) and valproic acid during the last 3 months. • Previous use of lamotrigine • Previous allergic reactions to anti-epileptic drugs • Epilepsy or epilepsy in the past • Suicidal thoughts or behaviour • Renal insufficiency • Liver insufficiency • Pregnancy • Brain tumour or other brain pathology potentially influencing the outcome measures |
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E.5 End points |
E.5.1 | Primary end point(s) |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
Baseline and after 26 weeks of treatment. |
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E.5.2 | Secondary end point(s) |
Visual spatial learning efficacy - Paired Associate Learning (from the CANTAB, Cambridge Neuropsychological Test Automated Battery) Auditory attention - Score! (from the TEACH, Test of Everyday Attention in Children) Fine motor coordination - Grooved Pegboard Test Attention problems - Parent reported ADHD-questionnaire (AVL, ADHD Vragenlijst) Intracortical inhibition - Short-interval Intracortical Inhibition (SICI), measured by paired pulse stimulation Cortical plasticity - LTP-like plasticity, measured by paired associative stimulation (PAS) |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
Baseline and 10 weeks of treatment (Intracortical inhibition and cortical plasticity) 26 weeks of treatment (Neuropsychological measures) |
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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) | Yes |
E.7.3 | Therapeutic confirmatory (Phase III) | No |
E.7.4 | Therapeutic use (Phase IV) | No |
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 | Yes |
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
| Yes |
E.8.4 | The trial involves multiple sites in the Member State concerned | No |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 3 |
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 | Yes |
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 30-week telephone call of the last subject in 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 | 2 |
E.8.9.1 | In the Member State concerned months | 6 |
E.8.9.1 | In the Member State concerned days | |
E.8.9.2 | In all countries concerned by the trial years | 2 |
E.8.9.2 | In all countries concerned by the trial months | 6 |