- ICH GCP
- Amerikanska kliniska prövningsregistret
- Klinisk prövning NCT00545467
Evaluation of the Strategies of Switching Schizophrenia Patients to Aripiprazole From Other Antipsychotic Agents
Evaluation of the Strategies of Switching Schizophrenia Patients to Aripiprazole From Other Antipsychotic Agents: Combination of Pharmacogenomics and Therapeutic Drug Monitoring
Studieöversikt
Status
Betingelser
Intervention / Behandling
Detaljerad beskrivning
Aripiprazole (commercial name abilify) is the first commercially available drug with dopamine partial agonist effects approved for the treatment of schizophrenia and bipolar disorder since 2002 in the U.S. It reduces negative symptoms of schizophrenia efficiently and has a markedly lower incidence of extrapyramidal symptoms and tardive dyskinesia. However, the process of switching other antipsychotic agents to aripiprazole can result in a re-emergence or worsening of psychosis, along with unpleasant side effects such as insomnia, nausea, vomiting, anxiety and agitation. On the basis of a prior study demonstrating the efficacy and safety of aripiprazole in Taiwan population, we hence propose to apply a combined use of pharmacogenomics and therapeutic drug monitoring in the evaluation of the strategies of switching stable schizophrenia patients to aripiprazole from other antipsychotic agents.
We will evaluate their cytochrome P450 background along with other potential candidate genes of schizophrenia. This 2-year proposal will examine the relative efficacy, safety and tolerability of two different strategies for switching stable inpatients/outpatients from prior antipsychotic monotherapy to aripiprazole 15 mg/day monotherapy using two different strategies:
- Fast tapering of the previous medication within 1 week after initiating aripiprazole for 2 weeks.
- Slow tapering of the previous medication within 4 weeks after initiating aripiprazole for 2 weeks.
A total of 200 stable schizophrenia patients will be randomized with open label to two strategies.
We expect to achieve the following results:
- Developing a protocol that has high probability of switching successfully schizophrenia patients to aripiprazole, which is effective in treatment refractory cases and has a markedly lower incidence of severe side effects, from other antipsychotics.
- Elucidate both pharmacokinetic and pharmacodynamic factors associated with clinical efficacy of aripiprazole.
Studietyp
Inskrivning (Faktisk)
Fas
- Fas 4
Kontakter och platser
Studieorter
-
-
-
Taipei, Taiwan, 100
- Department of Psychiatry, National Taiwan University Hospital
-
-
Deltagandekriterier
Urvalskriterier
Åldrar som är berättigade till studier
Tar emot friska volontärer
Kön som är behöriga för studier
Beskrivning
Inclusion Criteria:
- Men and non-lactating, non-pregnant women who are aged 18 to 65 years
- primary diagnosis of DSM-IV schizophrenia or schizoaffective disorder
- taking a stabilized dose of a single oral antipsychotic for at least 1 month prior to study entry
- cannot have been hospitalized for an exacerbation of schizophrenia or schizoaffective disorder for at least 2 months
Exclusion Criteria:
- having other psychiatric disorders
- hospitalizing for acute exacerbation of patients' condition within 2 months
- having taken a selective serotonin reuptake inhibitor (SSRI) within 4 weeks of screening
- a first episode of schizophrenia or schizoaffective disorder
- a clinically significant neurological abnormality other than tardive dyskinesia or EPS
- current diagnosis of psychoactive substance dependence or a historical drug or alcohol abuse within 1 month before the beginning of the study
- treatment with an investigational drug within 4 weeks prior to randomization
- requiring to take medication that inhibits the microsomal enzyme CYP2D6 or inhibits or acts as a substrate for CYP3A4
Studieplan
Hur är studien utformad?
Designdetaljer
- Primärt syfte: Behandling
- Tilldelning: Randomiserad
- Interventionsmodell: Parallellt uppdrag
- Maskning: Enda
Vapen och interventioner
Deltagargrupp / Arm |
Intervention / Behandling |
|---|---|
|
Aktiv komparator: 1
fast tapering of the previous medication within 1 week after initiating aripiprazole for 2 weeks
|
Aripiprazole will be given as a fixed does, 15 mg/day, orally throughout 8 weeks in the 2 arms.
Andra namn:
|
|
Aktiv komparator: 2
slow tapering of the previous medication within 4 weeks after initiating aripiprazole for 2 weeks
|
Aripiprazole will be given as a fixed does, 15 mg/day, orally throughout 8 weeks in the 2 arms.
Andra namn:
|
Vad mäter studien?
Primära resultatmått
Resultatmått |
Tidsram |
|---|---|
|
Treatment efficacy was assessed using PNASS, Clinical Global Impression (CGI) Scale, and EPS rating scales
Tidsram: on days 0, 7, 14, 28, 56
|
on days 0, 7, 14, 28, 56
|
Sekundära resultatmått
Resultatmått |
Tidsram |
|---|---|
|
HPLC analysis Genotyping
Tidsram: on days 0, 14, 56
|
on days 0, 14, 56
|
Samarbetspartners och utredare
Samarbetspartners
Utredare
- Studiestol: Tzung-Jeng Hwang, MD, Department of Psychiatry, National Taiwan University Hospital
Publikationer och användbara länkar
Allmänna publikationer
- Ma CH, Chan HY, Hsieh MH, Liu CC, Liu CM, Hwu HG, Kuo CH, Chen WJ, Hwang TJ. Identifying dopamine supersensitivity through a randomized controlled study of switching to aripiprazole from other antipsychotic agents in patients with schizophrenia. Ther Adv Psychopharmacol. 2022 Jan 28;12:20451253211064396. doi: 10.1177/20451253211064396. eCollection 2022.
- Jen YW, Hwang TJ, Chan HY, Hsieh MH, Liu CC, Liu CM, Hwu HG, Kuo CH, Lin YT, Chien YL, Chen WJ. Abnormally low prolactin levels in schizophrenia patients after switching to aripiprazole in a randomized trial: a biomarker for rebound in psychotic symptoms? BMC Psychiatry. 2020 Nov 23;20(1):552. doi: 10.1186/s12888-020-02957-7.
Studieavstämningsdatum
Studera stora datum
Studiestart
Primärt slutförande (Faktisk)
Avslutad studie (Faktisk)
Studieregistreringsdatum
Först inskickad
Först inskickad som uppfyllde QC-kriterierna
Första postat (Uppskatta)
Uppdateringar av studier
Senaste uppdatering publicerad (Uppskatta)
Senaste inskickade uppdateringen som uppfyllde QC-kriterierna
Senast verifierad
Mer information
Termer relaterade till denna studie
Ytterligare relevanta MeSH-villkor
- Mentala störningar
- Schizofrenispektrum och andra psykotiska störningar
- Schizofreni
- Psykotiska störningar
- Läkemedels fysiologiska effekter
- Neurotransmittormedel
- Molekylära mekanismer för farmakologisk verkan
- Depressiva medel i centrala nervsystemet
- Antipsykotiska medel
- Lugnande medel
- Psykotropa droger
- Serotoninmedel
- Antidepressiva medel
- Dopaminagonister
- Dopaminmedel
- Serotonin 5-HT1-receptoragonister
- Serotoninreceptoragonister
- Serotonin 5-HT2-receptorantagonister
- Serotoninantagonister
- Dopamin D2-receptorantagonister
- Dopaminantagonister
- Aripiprazol
Andra studie-ID-nummer
- 200705030M
Denna information hämtades direkt från webbplatsen clinicaltrials.gov utan några ändringar. Om du har några önskemål om att ändra, ta bort eller uppdatera dina studieuppgifter, vänligen kontakta register@clinicaltrials.gov. Så snart en ändring har implementerats på clinicaltrials.gov, kommer denna att uppdateras automatiskt även på vår webbplats .