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Comparative effect of second-generation antipsychotic blonanserin and aripiprazole on cognitive impairment in first-episode schizophrenia: An open-label trial

Comparative effect of second-generation antipsychotic blonanserin and aripiprazole on cognitive impairment in first-episode schizophrenia: An open-label trial - Effect of second-generation antipsychotics on cognition in first-episode schizophrenia

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000010827
Enrollment
60
Registered
2013-06-01
Start date
2013-06-01
Completion date
Unknown
Last updated
2026-06-29

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

Conditions

schizophrenia

Interventions

First-episode schizophrenia
blonanserin treatment group Patients were received blonanserin, and the dosage is adjusted to between 2 and 24 mg/day. Control group Chronic patients with schizophrenia who were treat
aripiprazole treatment group Patients were received aripiprazole, and the dosage is adjusted to between 3 and 30 mg/day. Control group Chronic patients with schizophrenia who were treat

Sponsors

Department of Neuropsychiatry St. Marianna University School of Medicine
Lead Sponsor
Ofuji hospital
Collaborator

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1) aged 16 to 40 years 2) meeting DSM-IV-TR criteria for schizophrenia, schizophreniform disorder, or schizoaffective disorder 3) experiencing their first episode of psychosis for at least 1 month and less than 5 years 4) no history of antipsychotic exposure or, if previously treated, a total lifetime of antipsychotic treatment of less than 16 weeks, and no antipsychotic administration for 12 weeks before participating in the study 5)inpatient or outpatient 6) patients who gave informed consent

Exclusion criteria

Exclusion criteria: 1) patients who had been treated with blonanserin or aripiprazole before study entry 2) comorbid central nervous system disorder 3) meeting DSM-IV-TR criteria for alcohol or other substance dependence 4) meeting DSM-IV-TR criteria for mental retardation 5) symptomatic or organic psychosis (including dementia) 6) taking tricyclic antidepressants 7) treatment with electroconvulsive therapy in the 12 weeks preceding the study 8) treatment with long-acting antipsychotics in the 12 weeks preceding the study 9) patients who are not voluntarily hospitalized 10) active expression of suicidal or homicidal ideation 11) pregnancy or breast feeding 12) inability to understand the study protocol

Design outcomes

Primary

MeasureTime frame
Cognitive function: Brief Assessment of Cognition in Schizophrenia-Japanese version (BACS-J)

Secondary

MeasureTime frame
Psychopathology: Positive And Negative Syndrome Scale (PANSS), Clinical Global Impression- Severity (CGI-S) Functional ability: Schizophrenia Cognitive Rating Scale- Japanese version (SCoRS-J), University of California, San Diego, Performance- Based Skills Assessment (UPSA) Subjective assessments: Schizophrenia Quality of Life Scale-Japanese version (SQLS-J), Subjective Well-being under Neuroleptic drug treatment Short form, Japanese version (SWNS-J) Adverse effects: Drug-Induced Extrapyramidal Symptoms Scale (DIEPSS),Weight Laboratory tests

Countries

Japan

Contacts

Public ContactTomomi Tenjin

St. Marianna University School of Medicine Department of Neuropsychiatry

t2tenjin@marianna-u.ac.jp044-977-8111

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026