E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
We investigate whether the effects fluoxetine (Prozac®) on the outgrowth of the serotonergic system are dependent on age. In a 16 week multicenter randomized, double-blind, placebo controlled trial with fluoxetine in 80 adolescents and adults suffering from MDD and/or anxiety, the effect of age is investigated using state of the art in vivo Magnetic Resonance Imaging (MRI) techniques that allow determination of the functional status of the 5-HT neurotransmitter system with pharmacological MRI. |
|
E.1.1.1 | Medical condition in easily understood language |
We investigate the effects of fluoxetine on the brain using MRI by treating 80 adolescents and adults diagnosed with major depression/anxiety with fluoxetine or placebo for 16 weeks. |
|
E.1.1.2 | Therapeutic area | Not possible to specify |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 15.0 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10056941 |
E.1.2 | Term | MRI brain |
E.1.2 | System Organ Class | 10022891 - Investigations |
|
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 report on the age-dependency of the effect(s) of the SSRI fluoxetine on the outgrowth of the serotonergic system using Magnetic Resonance Imaging (MRI) techniques |
|
E.2.2 | Secondary objectives of the trial |
- To report on the age-dependency of the effect of fluoxetine on the outgrowth of the serotonergic system using several behavioral outcome measures related to 5-HT (emotional processing, verbal memory and impulsivity) using fMRI and a neuropsychological test battery.
- To report on the age-dependency of the effect of fluoxetine on the 5-HT driven hypothalamic-pituitary-adrenal (HPA) axis, using cortisol and prolactine measures (baseline and after 5-HT challenge)
- To report on the age-dependency of the effect of fluoxetine on growth, pubertal development and insuline-like growth factor (IGF-1) levels
|
|
E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
40 adolescent (10-14 years of age) and 40 adult (23-30 years of age) female outpatients diagnosed with moderate or severe MDD and/or anxiety disorder, as defined in the DSM-IV, and in need of pharmacotherapy according to existing guidelines. |
|
E.4 | Principal exclusion criteria |
- IQ < 70 (subtests Wechsler Intelligence Scale for Children-Revised (WISC-R); Wechsler, 1981 or National Adult Reading Test (NART); Nelson, 1991).
- Other current Axis I psychiatric disorders like psychotic disorder, autistic disorder, ADHD and substance abuse, as defined in the DSM-IV.
- Current or previous treatment with medications that influence the 5-HT system (for adults before 23 years of age): SSRIs, tricyclic antidepressants, triptans, MAO inhibitors. Current or previous (ab)use (for adults before 23 years of age): of MDMA, amphetamine, methamphetamine, cocaine, heroine and LSD).
- Prenatal use of SSRI by mothers of the patients.
- Current treatment with CBT in adults
- Acute suicidality
- Contraindications to fluoxetine treatment (known hypersensitivity to one of the contents, use of other SSRIs or pimozide (Orap), thioridazine or monoamine oxidase inhibitors (MAOI) and Saint John’s Wort).
- Contraindications to MRI scanning (such as any kind of irremovable metal inside the body, claustrophobia, etc)
- Pregnancy, breastfeeding or sexually active and not using/willing to use medically accepted means of contraception.
|
|
E.5 End points |
E.5.1 | Primary end point(s) |
Main study parameters
Difference in functioning of the 5-HT system after treatment, when compared to baseline conditions, as measured by:
- phMRI: % change in citalopram induced BOLD signal from baseline
- DTI: % change in FA values from baseline
|
|
E.5.1.1 | Timepoint(s) of evaluation of this end point |
At week 0 (baseline) and week 19 (3weeks wash out period) |
|
E.5.2 | Secondary end point(s) |
- fMRI: % change in task related BOLD signal from baseline
- 1H-MRS: ratio of the 1.28 ppm peak to creatine peak
- Neuropsychological functioning: change in outcome of several well-validated neuropsychological (computer)tasks addressing (verbal) memory, impulse control and emotional processing, compared to baseline measurements.
- 5-HT-related HPA axis functioning: changes in baseline cortisol levels and cortisol and prolactine response after 5-HT challenge
- Growth: % change in length, body weight, Tanner stage and IGF-1 levels from baseline
|
|
E.5.2.1 | Timepoint(s) of evaluation of this end point |
At week -2(2 weeks prior to baseline), week 0, week 18 and week 19 |
|
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 | Yes |
E.6.5 | Efficacy | No |
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 | 4 |
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 | 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
|
The last visit of the last subject undergoing the trial |
|
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 |
E.8.9.2 | In all countries concerned by the trial years | 0 |
E.8.9.2 | In all countries concerned by the trial months | 0 |
E.8.9.2 | In all countries concerned by the trial days | 0 |