Skip to content

THE EFFECT OF GENETIC AND EPIGENETIC DISPOZITIONS ON THE EFFICIENCY AND SAFETY OF OLANZAPINE PSYCHOSIS THERAPY

SAFETY AND EFFICACY OF OLANZAPINE TREATMENT IN PSYCHOSIS: EFFECT OF GENETIC AND EPIGENETIC FACTORS – COVARIATES OF TREATMENT RESPONSE - SEOTP

Status
Active, not recruiting
Phases
Phase 4
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2018-002267-25-CZ
Enrollment
200
Registered
2018-06-13
Start date
2018-07-18
Completion date
Unknown
Last updated
2023-08-21

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Psychoses

Interventions

Pharmaceutical Form: Tablet INN or Proposed INN: OLANZAPINE CAS Number: 132539-06-1 Concentration unit: mg milligram(s) Concentration type: range Concentration number: 5-20

Sponsors

Fakultní nemocnice Brno
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Dg. F20, F25 according to ICD-10 , treated with olanzapine or initiated treatment by olanzapine 2. Age 18-60 years 3. Signing the informed consent Are the trial subjects under 18? no Number of subjects for this age range: F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range 200 F.1.3 Elderly (>=65 years) no F.1.3.1 Number of subjects for this age range

Exclusion criteria

Exclusion criteria: 1. Involuntary hospitalization 2. Sui juris restriction or divestiture 3. Olanzapine or caffeine contraindication 4. Pregnancy or breastfeeding 5. Disagreement with the required contraception method(s) 6. Prior participation in any other trial involving investigational medication or medical devices within 14 days prior to the enrolment and during this trial; 7. Other serious medical or psychiatric illness that is not adequately controlled and, in the Investigator’s opinion, would not permit the subject to be managed according to the protocol.

Design outcomes

Primary

MeasureTime frame
Main Objective: The primary objective of the proposed project is to evaluate proportions of polymorphisms of CYP1A2, MDR1, 5HT2A, 5HT2C, HDAC 3, 4 and cytosine methylation of 5HT2A gene and metabolic phenotype of CYP1A2 in the population of patients with SCZ and schizoaffective disorders.;Secondary Objective: The secondary goal of the study is to evaluate which inherited or acquired genetic and epigenetic dispositions may affect the response to olanzapin treatment of psychoses associated with F20 – schizophrenia, and F25 – schizoaffective disorders.;Primary end point(s): The endpoints associated with patient’s genetic and epigenetic background: 1. frequency of gene polymorphisms of CYP1A2, MDR1, 5HT2A, 5HT2C, HDAC 3, 4 2. cytosine methylation of 5HT2A 3. metabolic phenotype of CYP1A2 The endpoints associated with olanzapine efficacy: 1. Response rate: The therapeutic response is defined as 20% reduction in PANSS score (see Chapter 7.3) on day 14 and 30% reduction in PANSS score on day 28 compared to the initial score. 2. Remission rate: Remission is defined in compliance with the “Remission in Schizophrenia Working Group” as reduction of the severity of symptoms evaluated in items P1, P2, P3, G5, G9, N1, N4, N6 of PANSS scale to = 3 degree; with respect to the hospitalization period, although the recommended time factor (6 months) will not be included in the evaluation. 3. Time to reach the therapeutic effect. 4. Number of "drop-outs" (olanzapine treatment cessation) and their reasons. ;Timepoint(s) of evaluation of this end point: End of the study

Secondary

MeasureTime frame
Secondary end point(s): The endpoints associated with olanzapine tolerability: 1. Side effects assessment: UKU scale 2. Treatment of the adverse effects of olazapine – medication, doses, treatment duration, changes in olanzapin administration.;Timepoint(s) of evaluation of this end point: End of the study

Countries

Czech Republic

Contacts

Public ContactFarmakologický ústav

Masarykova univerzita - Lékarská fakulta

demlova@med.muni.cz00420549496526

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026