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Completed

NCT Number: NCT01822418

Agomelatine Treatment of Depression in Schizophrenia (AGOPSYCH)

Major depressive episodes (MDEs) occur frequently during the course of psychotic disorders, and several antidepressive agents have been successfully applied. The new melatonergic antidepressant agomelatine (AGO) appears promising for the treatment of MDEs in schizophrenia for several reasons. The investigators plan to test the efficacy and tolerability of AGO for antidepressive treatment in schizophrenia. For this task, the investigators plan to enrol 27 schizophrenic patients into an open, single-armed, prospective clinical trial with agomelatine.

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Key information

Conditions

Schizophrenia Behavior Behavioral Symptoms Delusional Disorder Depression Mental Disorders Psychotic Disorders Schizoaffective Disorder Schizophrenia Spectrum and Other Psychotic Disorders Schizophrenia, Paranoid

Age range

18 year–60 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 4

Primary location

Central Institute of Mental Health

Mannheim, Baden-Wurttemberg, 68159, Germany

About this study

Major depressive episodes (MDEs) occur frequently during the course of psychotic disorders, and several antidepressive agents have been successfully applied. The new melatonergic antidepressant agomelatine (AGO) appears promising for the treatment of MDEs in schizophrenia for several reasons: 1. AGO provides a unique pharmacological profile by combining antidepressive potency, sleep regulation and enhancement of frontocortical dopaminergic activity by 5-HT-2C-blockade. 2. AGO might exert favourable effects on cognition. 3. While pharmacokinetic interactions are generally possible, major influences on antipsychotic substances are unlikely due to metabolism by cytochrome isoenzymes CYP1A2 and CYP2C9/19. 4. AGO is characterized by a favourable range of adverse events (AE) which do not overlap with typical antipsychotic AEs such as weight gain and sexual dysfunction. Thus, the risk of additive effects seems to be small. The investigators plan to enroll 27 schizophrenic patients into an open, single-armed, prospective clinical trial with agomelatine. As predefined primary and secondary endpoints, we are going to investigate whether AGO is able to improve MDE severity, sleep quality, general and psychosocial functioning as well as cognitive function in schizophrenia without detrimental effects on the psychotic syndrome. Moreover, we intend to monitor for pharmacokinetic interactions. The results obtained will allow designing future randomized and controlled clinical trials in order to improve the range of therapeutic options for affective and cognitive deficits in schizophrenia.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Age between 18 and 60 years.
  • Presence of an MDE according to ICD-10 criteria (HAMD17 ≥ 18 or CDSS-Score ≥ 8 points).
  • Lifetime diagnosis of schizophrenia-spectrum disorder according to ICD-10 (F 20, F22, F23, F25).
  • Partial remission of psychotic positive symptoms (PANSS positive subscore ≤ 15 points).
  • Stable antipsychotic medication for at least 2 weeks (tolerable quantitative changes of daily dosage ≤ 25%).
  • The patient is able to give an informed consent. In case of legal guardianship, the custodian will have to agree to the patient's participation.

Exclusion criteria

  • Contraindications against AGO treatment
  • Insufficient contraception in women of childbearing potential when sexually active.
  • Gravidity or breastfeeding.
  • Addiction to alcohol
  • Current abuse of THC and other illegal substances according to ICD-10
  • Dementia

Treatment and study plan

Agomelatine

Drug

Augmentation of antipsychotic therapy with 25 to 50 mg agomelatine as a single oral dosage per day

Other names: Valdoxan

Primary outcomes

  1. Antidepressive efficacy

    Time frame: 6 weeks

    Comparison of MDE severity before and after six weeks of treatment with AGO. In order to assess the treatment success, means of HAM-D17 and CDSS scores at both baseline and week 6 will be compared within the efficacy sample (at least one application of AGO, LOCF). The primary endpoint will be tested with a two-sided student's t-test at a level of statistical significance of ≤.05.

Secondary outcomes

  1. Secondary efficacy measures: Response rates

    Time frame: 6 weeks and 3 months

    We will determine the percentage of responses (decrease of HAMD by at least 50 %)

  2. Secondary efficacy measures: Long-term efficacy

    Time frame: 6 weeks and 3 months

    After 12 weeks of treatment we plan to compare means of HAMD and CDSS with baseline data.

  3. Secondary efficacy measures: Psychosocial functioning

    Time frame: 6 weeks and 3 months

    During treatment psychosocial functioning might improve. We plan to compare means of PSP scale assessed after 6 weeks and 3 months with baseline data.

  4. Secondary tolerability and safety measures: Psychotic symptoms

    Time frame: 6 weeks and 3 months

    The stability of the psychotic syndrome during treatment with AGO will be evaluated comparing means of PANSS after 6 weeks and 3 months with baseline.

  5. Secondary tolerability and safety measures: General tolerability

    Time frame: 6 weeks and 3 months

    The general tolerability measures include the exploration and documentation of adverse events.

  6. Secondary tolerability and safety measures: Pharmacokinetic interactions between AGO and antipsychotic agents

    Time frame: 6 weeks and 3 months

    Effects of AGO treatment on serum drug levels of antipsychotic agents will be evaluated by comparing the SDLs at baseline with values obtained after 6 weeks and 3 months.

  7. Secondary efficacy measures: Remission rates

    Time frame: 6 weeks and 3 months

    We will determine the percentage of remissions (decrease of HAMD below 8)

  8. Secondary efficacy measures: Cognitive functioning

    Time frame: 3 months

    During treatment neurocognitive deficits might improve. We plan to compare means in the MCCB assessed after 3 months with baseline data.

Sponsors and collaborators

Lead sponsor

Central Institute of Mental Health, Mannheim

Other

Collaborators

  • Servier

Registry information

Official study title

Agomelatine Treatment of Major Depressive Episodes in the Course of Schizophrenic Psychoses (AGOPSYCH)

Acronym: AGOPSYCH

Important dates

Study start
2013
Primary completion
2015
Study completion
2015
First posted
Apr 2, 2013
Registry last updated
Mar 8, 2018

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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