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 | Psychiatry and Psychology [F] - Mental Disorders [F03] |
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 |
To characterize the effects of ketamine on brain activation and connectivity
To characterize the effects of ketamine on hedonic experiences |
Entschlüsselung des Einflusses von Ketamin auf Gehirn Aktivität und Konnektivität
Entschlüsselung des Einflusses von Ketamin auf hedonische Erfahrungen |
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E.2.2 | Secondary objectives of the trial |
Impact of Ketamine on reward processing and fMRI correlates in depression
Impact of Ketamine on sexual arousal and fMRI correlates in depression
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Einfluss von Ketamin auf Belohnung und entsprechender fMRI Aktivität bei depressiven PatientInnen
Einfluss von Ketamin auf sexueller Erregung und entsprechender fMRI Aktivität bei depressiven PatientInnen |
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E.2.3 | Trial contains a sub-study | Yes |
E.2.3.1 | Full title, date and version of each sub-study and their related objectives |
In a dose-finding pilot study, infusion of 0.25 and 0.5mg/kg bodyweight of ketamine will be administered intravenously to 5 healthy subjects each over the course of 40 min to test responsivity to the stimuli. Based on these findings, we will determine the dose for our main study.
In a BDNF (brain-derived neurotrophic factor) and immunology substudy, additional blood draws will be performed 1 day and 7 days after study drug and placebo administration (session 2 & 3). Plasma samples will be collected in plasma vacutainer tubes and processed within 2h of being collected to decrease variability. Serum samples will be left to clot for 30 minutes before centrifugation and further sample processing. Plasma and serum samples will be centrifuged at 1500 x g for 15 min and liquid portions pipetted and stored at -80°C until analysis of BDNF concentrations and immunological parameters. In all subjects of the main- and substudy, BDNF levels will be assessed before, 40 and 100 minutes after study drug administration as well as after fMRI scanning (approximately 280 minutes after study drug administration). |
Im Rahmen einer Pilotstudie erhalten 5 ProbandInnen jeweils 0.25 and 0.5mg/kg Körpergewicht Ketamine über 40 Minuten. Probanden bekommen anschließend das Ästhetik Paradigma präsentiert. Es handelt sich um eine Dosisfindungsstudie.
In einer BDNF- (Brain-derived neurotrophic factor) und Immunologie-Substudie werden 1 Tag und 7 Tage nach der Verabreichung von Studienmedikament und Plazebo (Sitzung 2 und 3) zusätzliche Blutentnahmen durchgeführt. Die Plasmaproben werden in Plasma-Vakutainer-Röhrchen entnommen und innerhalb von 2 Stunden nach der Entnahme verarbeitet, um die Variabilität der Werte zu verringern. Die Serumproben werden vor der Zentrifugation und der weiteren Probenverarbeitung 30 Minuten lang gerinnen gelassen. Plasma- und Serumproben werden 15 Minuten lang bei 1500 x g zentrifugiert, die flüssigen Anteile abpipettiert und bis zur Analyse der BDNF-Konzentrationen und der immunologischen Parameter bei -80 °C gelagert. Bei allen ProbandInnen der Hauptstudie und Substudie werden die BDNF-Konzentrationen vor, 40 und 100 Minuten nach der Verabreichung des Studienmedikaments sowie nach dem fMRI-Scan (etwa 280 Minuten nach Verabreichung des Studienmedikaments) bestimmt. |
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E.3 | Principal inclusion criteria |
- General health based on medical history and physical examination - Psychiatric health based on structured clinical interview for DSM--5 (SCID) for healthy controls - Major depressive episode (first or recurrent) based on structured clinical interview for DSM- 5 and ICD-10 for patients - Age 18 to 55 years - Right-handedness (due to potential lateralization effects of left-handed subjects) - Willingness and competence to sign the informed consent form.
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-Internistische und neurologische Gesundheit -Fehlen einer psychiatrischen Diagnose basierend auf dem Structured clinical interview for DSM-5 (SCID) (gesunde KontrollprobandInnen) -Depressive Episode (erstmalig oder rezidivierend) basierend auf dem Structured clinical interview for DSM-5 (SCID) und ICD-10 (PatientInnen) -18-55 Jahre -RechtshänderInnen -Einsichts- und Urteilsfähigkeit für Informed Consent
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E.4 | Principal exclusion criteria |
-Current or history of neurological disease -Current medical illness requiring treatment -Psychiatric diagnosis for healthy individuals -Psychiatric comorbidity with the exception of anxiety disorders for depressed individuals -Pregnancy or current breastfeeding -Current or former substance abuse -Previous ketamine use in lifetime -Any contraindication for MRI (e.g., MR incompatible implants, etc.) including dental implants causing signal artifacts -Failure to comply with the study protocol or to follow the instruction of the investigating team.
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-Gegenwärtige oder frühere neurologische Erkrankung -gegenwärtige internistische Erkrankung -Psychiatrische Diagnose bei gesunden KontrollprobandInnen -Psychiatrische Komorbidität mit der Außnahme von Angststörungen bei PatientInnen -Gegenwärtiger oder früherer Substanzmissbrauch. -Schwangerschaft oder Stillen -MRI Kontraindikationen -früherer Ketamingebrauch -Nicht-einhalten des Studienprotokolls
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E.5 End points |
E.5.1 | Primary end point(s) |
1. BOLD signal: cerebral activation, functional connectivity during aesthetic paradigm 2. resting state functional connectivity 3.fMRI activity 4. Chills, Pleasantness |
1. BOLD signal: cerebral activation, functional connectivity during aesthetic paradigm 2. resting state functional connectivity 3. Chills, Pleasantness |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
1. Study Session 2, 3 2. Study Session 2, 3 3. Study Session 1,2, 3, 4 |
1. Untersuchungstag 2, 3 2. Untersuchungstag 2, 3 3. Untersuchungstag 1,2, 3, 4 |
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E.5.2 | Secondary end point(s) |
1. BOLD signal: cerebral activation, functional connectivity during reward paradigm 2. BOLD signal: cerebral activation, functional connectivity during sexual arousal paradigm |
1. BOLD signal: cerebral activation, functional connectivity during reward paradigm 2. BOLD signal: cerebral activation, functional connectivity during sexual arousal paradigm |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
1. Study Session 2, 3 2. Study Session 2, 3 |
1. Untersuchungstag 2, 3 2. Untersuchungstag 2, 3 |
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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 | No |
E.6.7 | Pharmacodynamic | Yes |
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 | Yes |
E.6.13.1 | Other scope of the trial description |
Neuroscience |
Neurowissenschaftlich |
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E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | Yes |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | Yes |
E.7.1.3.1 | Other trial type description |
authorized for alternative indication |
zugelassen für andere Indikation |
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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 | Yes |
E.8.1.4 | Double blind | No |
E.8.1.5 | Parallel group | No |
E.8.1.6 | Cross over | Yes |
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 | 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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Last visit last subject |
Letzte Visite letze TeilnehmerIn |
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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 |