E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Obsessive-Compulsive Disorder |
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MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 9.1 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10029898 |
E.1.2 | Term | Obsessive-compulsive disorder |
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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 aim of this pilot-study is to establish the potential efficacy of D-cycloserine (DCS), a partial NMDA agonist, in accelerating and/or augmenting the effect of exposure and response prevention (ERP) in the treatment of obsessive-compulsive disorder (OCD). |
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E.2.2 | Secondary objectives of the trial |
Are the effects of D-cycloserine, if established, maintained in a follow-up period of 3 months? |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
- Patients with a primary DSM-IV diagnosis of OCD with an age of 18 years and older as established with the Structural Clinical Interview for axis I DSM-IV Disorders (SCID I) - Obsessive-compulsive complaints has to be such that exposure in vivo is feasible at the outpatient department, in the clinic or the direct environment. - Patients have to understand the rationale of exposure therapy and there has to be a readiness to participate in exposure sessions. - If a patient uses medication, dosages have to be stable (no changes in the last 2 months and during the study period). - Negative pregnancy test (β-HCG in urine).
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E.4 | Principal exclusion criteria |
- Addiction to alcohol or drugs or abuse of these compounds - A primary diagnosis of a personality disorder - Psychotic disorder - Relevant somatic disorders - Suicidal intentions - Pregnancy or breastfeeding - Usage of medication possibly interfering with DCS (isoniazide, protonionamide)
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E.5 End points |
E.5.1 | Primary end point(s) |
Acceleration of the treatment effect of ERP is taken as the primary outcome measure. The differences in scores on the Y-BOCS (clinical interview) between baseline and at several time points will be taken as the main measurement |
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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 | No |
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) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | Yes |
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.8.3 |
The trial involves single site in the Member State concerned
| Yes |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
E.8.4.1 | Number of sites anticipated in Member State concerned | 2 |
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 | Information not present in EudraCT |
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 of the last subject. |
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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 | 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 |