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Quality of Life, Safety and Compliance of Patients Using Monotherapy or Combinatorial Therapy With Quetiapine for Treatment of Schizophrenia or Bipolar Affective Disorder

9 octobre 2026 mis à jour par: Bosnalijek D.D

Study of Quality of Life, Safety and Compliance During Treatment of Schizophrenia or Bipolar Affective Disorder, in Patients Using the Drug Kvepin® (Quetiapine) as Monotherapy or Combination Therapy With Other Antipsychotics (Ispitivanje Kvalitete života, Sigurnosti i Saradljivosti u Toku liječenja Shizofrenije Ili Bipolarnog Afektivnog poremećaja, Kod Pacijenata Koji Koriste Lijek Kvepin® (Kvetiapin) Kao Monoterapiju Ili Kombinovanu Terapiju sa Drugim Antipsihoticima)

The goal of this observational study is to evaluate the quality of life, drug safety and therapy compliance of schizophrenia or bipolar affective disorder patients during the treatment with quetiapine monotherapy or in combination with another antipsychotic/antipsychotics. The main outcome measures are:

  • quality of life using the World Health Organization Quality of Life questionnaire (WHOQOL)
  • safety through the monitoring of the incidence of possible adverse drug events by the researcher, with the assessment of the association between the administration of the drug and the occurrence of an adverse reaction
  • therapy adherence using the Medication Adherence Rating Scale (MARS).

The subjects will be divided into two groups:

  1. Newly diagnosed patients with a diagnosis of schizophrenia or bipolar affective disorder whose individual therapeutic approach, based on the clinical assessment of the research physician, includes one of the following therapies:

    1. monotherapy with the drug quetiapine
    2. combined antipsychotic therapy with quetiapine and aripiprazole
    3. combined antipsychotic therapy with quetiapine and haloperidol

  2. Patients with a diagnosis of schizophrenia or bipolar affective disorder who are on therapy with one of the antipsychotics (aripiprazole or haloperidol), and who, based on the clinical assessment of the investigator, require adjunctive quetiapine therapy. This group will include two subgroups of patients:

    1. combined antipsychotic therapy with quetiapine and aripiprazole
    2. combined antipsychotic therapy with quetiapine and haloperidol Recruitment of subjects will be carried out by physicians/researchers based on the patient's history and diagnosis. The diagnosis of schizophrenia or bipolar affective disorder will be based on the standard diagnostic criteria in medical practice (validated measurement scales in psychiatry - Young's Mania Scale, Beck Depression Scale and PANNS Schizophrenia Scale).

Patients will have four visits to physician/researcher:

  1. First visit - baseline at which patient will be included in the study
  2. Second visit - 4 months after the baseline
  3. Third visit - 8 months after the baseline
  4. Fourth visit - 12 months after the baseline

Aperçu de l'étude

Statut

Recrutement

Les conditions

Intervention / Traitement

Type d'étude

Observationnel

Inscription (Estimé)

500

Contacts et emplacements

Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.

Coordonnées de l'étude

Sauvegarde des contacts de l'étude

  • Nom: Una Glamoclija, PhD
  • Numéro de téléphone: +38761147401
  • E-mail: UnaG@Bosnalijek.ba

Lieux d'étude

  • Bosnie Herzégovine
      • Sarajevo, Bosnie Herzégovine, 71000
        • Recrutement
        • Clinic of Psychiatry, University Clinical Center of Sarajevo
        • Contact:

Critères de participation

Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.

Critère d'éligibilité

Âges éligibles pour étudier

18 ans à 65 ans (Adulte, Adulte plus âgé)

Accepte les volontaires sains

Non

Sexes éligibles pour l'étude

Tout

Méthode d'échantillonnage

Échantillon non probabiliste

Population étudiée

Schizophrenia or bipolar affective disorder patients of both sexes aged 18 to 65 years.

La description

Inclusion Criteria:

  • Persons over 18 years of age and under 65 years of age.
  • Schizophrenia or bipolar affective disorder established by the usual diagnostic criteria applied in a psychiatric clinic or hospital ward/unit within the clinic or outpatient.
  • Patients who are treated as outpatients, inpatients or have been discharged from the clinic/hospital with a recommendation for quetiapine monotherapy or combination therapy of quetiapine with aripiprazole or haloperidol. Recommended by a specialist psychiatrist/neuropsychiatrist in clinical and hospital centers and through specialist-consultant outpatient clinics in Bosnia and Herzegovina.

Exclusion Criteria:

  • Persons younger than 18 years and older than 65 years
  • Hypersensitivity to the components of the drug
  • Positive history of angioneurotic edema
  • Pregnancy
  • Breastfeeding
  • Simultaneous use with cytochrome P450 3A4 inhibitors, such as HIV-protease inhibitors, azole antifungals, erythromycin, clarithromycin and nefazodone
  • Patients who are planning to become pregnant in the near future
  • Diagnosed medical conditions that may constitute a contraindication for the use of the drug quetiapine

Withdrawal Criteria:

  • Deterioration of the underlying disease that requires therapy discontinuation
  • Development of serious adverse events requiring therapy discontinuation
  • Occurence of pregnancy
  • Development of another disease that affects the course of the study

Plan d'étude

Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.

Comment l'étude est-elle conçue ?

Détails de conception

  • Modèles d'observation: COHORT
  • Perspectives temporelles: PROSPECTIVE

Cohortes et interventions

Groupe / Cohorte
Intervention / Traitement
Newly diagnosed patients

Newly diagnosed patients with a diagnosis of schizophrenia or bipolar affective disorder
Médicament: Quetiapine (drug)

Monotherapy with the drug quetiapine

Médicament: quetiapine + aripiprazole

Combined antipsychotic therapy with quetiapine and aripiprazole

Médicament: quetiapine + haloperidol

Combined antipsychotic therapy with quetiapine and haloperidol
Previously diagnosed patients

Patients with a previous diagnosis of schizophrenia or bipolar affective disorder
Médicament: quetiapine + aripiprazole

Combined antipsychotic therapy with quetiapine and aripiprazole

Médicament: quetiapine + haloperidol

Combined antipsychotic therapy with quetiapine and haloperidol

Que mesure l'étude ?

Principaux critères de jugement

Mesure des résultats
Description de la mesure
Délai
Measurement of quality of life using the World Health Organization Quality of Life questionnaire (WHOQOL)-BREF
Délai: 12 months from inclusion into the study (baseline)

Evaluation of the quality of life of patients during treatment for schizophrenia or bipolar affective disorder using monotherapy with the drug quetiapine or combination therapy with the drug quetiapine and another antipsychotic (aripiprazole or haloperidol). World Health Organization Quality of Life questionnaire (WHOQOL)-BREF will be used. It consists of 26 items that evaluate an individual's perception of their quality of life and consists of four domains: physical health (e.g., pain, energy, sleep, mobility, activities of daily living, work capacity); psychological health (e.g., positive and negative feelings, self-esteem, body image, cognition, spirituality); social relationships (e.g., personal relationships and social support) and environment. Domain scores are calculated according to the WHO scoring guidelines and can be transformed to a 0-100 scale, where higher scores represent a better quality of life.
12 months from inclusion into the study (baseline)

Mesures de résultats secondaires

Mesure des résultats
Description de la mesure
Délai
Safety assessment through incidence of possible adverse drug events and evaluation of the association between the administration of the drug and the occurrence of an adverse reaction
Délai: 12 months from baseline

Safety through the monitoring of the incidence of possible adverse drug events by the researcher, with the assessment of the association between the administration of the drug and the occurrence of an adverse reaction
12 months from baseline
Therapy adherence using the Medication Adherence Rating Scale (MARS)
Délai: 12 months from baseline

Medication Adherence Rating Scale (MARS), a validated self-report questionnaire designed to evaluate patients' adherence to prescribed medication regimens. The instrument was originally developed for patients receiving long-term pharmacological treatment and has been widely used in studies of psychiatric and chronic medical conditions. The MARS consists of 10 items that assess both medication-taking behavior and patients' attitudes toward medication, including forgetfulness, intentional omission of doses, discontinuation of treatment when feeling better or worse, and beliefs regarding the effects of medication. Responses are provided in a dichotomous (Yes/No) format. Individual item scores are summed to obtain a total score ranging from 0 to 10, with higher scores indicating better medication adherence. The scale enables the identification of both intentional and unintentional non-adherence and provides insight into factors affecting treatment adherence.
12 months from baseline

Collaborateurs et enquêteurs

C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.

Parrainer

Bosnalijek D.D

Les enquêteurs

  • Chercheur principal: Gorana Sulejmanpašić, PhD, Clinic of Psychiatry, University Clinical Center of Sarajevo
  • Chercheur principal: Amra Memić Serdarević, PhD, Clinic of Psychiatry, University Clinical Center of Sarajevo

Dates d'enregistrement des études

Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.

Dates principales de l'étude

Début de l'étude (Réel)

30 octobre 2025

Achèvement primaire (Estimé)

1 avril 2027

Achèvement de l'étude (Estimé)

1 mai 2027

Dates d'inscription aux études

Première soumission

29 septembre 2026

Première soumission répondant aux critères de contrôle qualité

29 septembre 2026

Première publication (Réel)

5 octobre 2026

Mises à jour des dossiers d'étude

Dernière mise à jour publiée (Réel)

15 octobre 2026

Dernière mise à jour soumise répondant aux critères de contrôle qualité

9 octobre 2026

Dernière vérification

1 octobre 2026

Plus d'information

Termes liés à cette étude

Termes MeSH pertinents supplémentaires

Autres numéros d'identification d'étude

  • KVP-01-2024

Informations sur les médicaments et les dispositifs, documents d'étude

Étudie un produit pharmaceutique réglementé par la FDA américaine

Non

Étudie un produit d'appareil réglementé par la FDA américaine

Non

Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .

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