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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 de octubre de 2026 actualizado por: 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

Descripción general del estudio

Tipo de estudio

De observación

Inscripción (Estimado)

500

Contactos y Ubicaciones

Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.

Estudio Contacto

Copia de seguridad de contactos de estudio

  • Nombre: Una Glamoclija, PhD
  • Número de teléfono: +38761147401
  • Correo electrónico: UnaG@Bosnalijek.ba

Ubicaciones de estudio

      • Sarajevo, Bosnia y Herzegovina, 71000
        • Reclutamiento
        • Clinic of Psychiatry, University Clinical Center of Sarajevo
        • Contacto:
          • Gorana Sulejmanpašić, PhD
          • Número de teléfono: +38733297359
          • Correo electrónico: psihijatrija@kcus.ba

Criterios de participación

Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.

Criterio de elegibilidad

Edades elegibles para estudiar

18 años a 65 años (Adulto, Adulto Mayor)

Acepta Voluntarios Saludables

No

Géneros elegibles para el estudio

Todos

Método de muestreo

Muestra no probabilística

Población de estudio

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

Descripción

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 de estudios

Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.

¿Cómo está diseñado el estudio?

Detalles de diseño

  • Modelos observacionales: COHORT
  • Perspectivas temporales: PROSPECTIVE

Cohortes e Intervenciones

Grupo / Cohorte
Intervención / Tratamiento
Newly diagnosed patients

Newly diagnosed patients with a diagnosis of schizophrenia or bipolar affective disorder

Monotherapy with the drug quetiapine

Combined antipsychotic therapy with quetiapine and aripiprazole

Combined antipsychotic therapy with quetiapine and haloperidol

Previously diagnosed patients

Patients with a previous diagnosis of schizophrenia or bipolar affective disorder

Combined antipsychotic therapy with quetiapine and aripiprazole

Combined antipsychotic therapy with quetiapine and haloperidol

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Measurement of quality of life using the World Health Organization Quality of Life questionnaire (WHOQOL)-BREF
Periodo de tiempo: 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)

Medidas de resultado secundarias

Medida de resultado
Medida Descripción
Periodo de tiempo
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
Periodo de tiempo: 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)
Periodo de tiempo: 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

Colaboradores e Investigadores

Aquí es donde encontrará personas y organizaciones involucradas en este estudio.

Patrocinador

Investigadores

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

Fechas de registro del estudio

Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados ​​por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.

Fechas importantes del estudio

Inicio del estudio (Actual)

30 de octubre de 2025

Finalización primaria (Estimado)

1 de abril de 2027

Finalización del estudio (Estimado)

1 de mayo de 2027

Fechas de registro del estudio

Enviado por primera vez

29 de septiembre de 2026

Primero enviado que cumplió con los criterios de control de calidad

29 de septiembre de 2026

Publicado por primera vez (Actual)

5 de octubre de 2026

Actualizaciones de registros de estudio

Última actualización publicada (Actual)

15 de octubre de 2026

Última actualización enviada que cumplió con los criterios de control de calidad

9 de octubre de 2026

Última verificación

1 de octubre de 2026

Más información

Términos relacionados con este estudio

Información sobre medicamentos y dispositivos, documentos del estudio

Estudia un producto farmacéutico regulado por la FDA de EE. UU.

No

Estudia un producto de dispositivo regulado por la FDA de EE. UU.

No

Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .

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