E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Gender, healthy volunteers |
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E.1.1.1 | Medical condition in easily understood language |
Gender, healthy volunteers |
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E.1.1.2 | Therapeutic area | Body processes [G] - Biological Phenomena [G16] |
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 |
P-gp is one of the main efflux transporters at the blood-brain barrier and is responsible for the transport of a variety of neurotoxic substances, including pharmaceuticals. Multiple studies report gender differences in therapeutic outcomes, toxicity and side effects for many drug agents. P-gp plays an important role in the bio-availability, drug distribution, metabolism and elimination of pharmaceuticals labelled as P-gp substrates (e.g. the majority of antidepressants and antipsychotics).
Main objective: The main objective of this study is to investigate gender differences in P-gp function at the blood brain barrier, in order to gain further insight into the impact of these differences on the action of pharmaceuticals (antidepressants and antipsychotics) in the brain.
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E.2.2 | Secondary objectives of the trial |
1. [15O]H2O-PET influx curves will be added as variable in the kinetic analysis using PMOD, to assess possible influence of cerebral blood flow. The CBF measures obtained with [15O]H2O-PET will be compared with K1 measures of the [18F]MC225 PET scan to see if uptake of [18F]MC225 is influenced by cerebral perfusion rate.
2. Since [15O]H2O-PET is the gold standard for quantitative imaging of cerebral perfusion, the results of [15O]H2O-PET will also be compared with MRI perfusion sequences (DSC, DCE, ASL). In this way the perfusion MRI can be validated as less invasive method to measure cerebral perfusion and be used in future projects. |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
- Healthy volunteers - Age: 50-80 years - MMSE: 28-30 - No history of any neuropsychiatric disorders that might affect the P-gp function or blood-brain barrier integrity |
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E.4 | Principal exclusion criteria |
- Use of medication with known P-gp affinity - History of neuropsychiatric disorders affecting the P-gp function or blood-brain barrier integrity |
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E.5 End points |
E.5.1 | Primary end point(s) |
PET images will be analysed using PMOD software (PMOD technologies, Zurich, Switzerland, version 4.1). Predefined brain regions based on a maximum probability map are selected as volumes of interest (VOIs). Tracer kinetics of [18F]MC225 reflect the BBB P-gp function and will be assessed as outcome measure for P-gp efflux function. Those will be compared in between the groups of male and female subjects. |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
12 months after the last PET scan |
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E.5.2 | Secondary end point(s) |
MRI perfusion (DSC, DCE) parameters to compare with results of the [15O]H2O-PET to enable correction for perfusion effects interfering with outcome parameters of [18F]MC225. |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
12 months after the last PET-scan. |
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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 | No |
E.6.4 | Safety | No |
E.6.5 | Efficacy | No |
E.6.6 | Pharmacokinetic | Yes |
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) | 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 | No |
E.8.1.2 | Open | Yes |
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 | No |
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 | 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 | 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 | 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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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 | |
E.8.9.1 | In the Member State concerned days | |