Safety and efficacy of S 33138 versus risperidone in schizophrenic patients with predominant positive symptoms:A pilot phase IIa, international, multicentre, randomised, double-blind, parallel-group, controlled study. - CL2-33138-PO-C-RISP-160P-SCHIZOPHRENIA

Phase 1

• Conditions: Schizophrenia; MedDRA version: 7.0Level: P.T.Classification code 10039626

• Registration Number: EUCTR2005-000016-27-HU
• Lead Sponsor: Institut de Recherches Internationales Servier

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Start: 2005-04-12
• Study Completion: 2006-10-17
• Last Update Posted: 21 December 2021

Recruitment & Eligibility

• Status: ot Recruiting
• Sex: All
• Target Recruitment: 160

Inclusion Criteria

Selection criteria :
- Male or female, aged between 18 and 65 years old (inclusive),
- Hospitalised for an acute first episode or a relapse of schizophrenia paranoid or undifferentiated types or provisional schizophreniform disorder or schizoaffective disorder .
- Patients with a total score of at least 60 for the 30-item PANSS, a score of at least 4 on three or more items of the PANSS positive subscale, a (PANSS positive subscale score - PANSS negative subscale score) > 0 and with a CGI severity of illness score of at least 4.

Inclusion criteria :
- Patients with a total score of at least 60 for the 30-item PANSS (scoring 1-7), a score of at least 4 on three or more items of the PANSS positive subscale, a (PANSS positive subscale score - PANSS negative subscale score) >0,
- Patients with a CGI Severity of Illness score of at least 4 (moderately ill),
- Normal results (or judge by the investigator as clinically not significant) for physical examination and vital signs.

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
F.1.3 Elderly (>=65 years) no
F.1.3.1 Number of subjects for this age range

Exclusion Criteria

Non-selection criteria - General criteria :
- Pregnant or breast feeding women,
- Women of childbearing potential or women who have been post menopausal for less than 2 years without effective contraception (protected by oral contraception or intra-uterine device or any other method judged by the investigator to be adapted to the patient’s condition),

Non-selection criteria - Medical and therapeutic :
- Patients presenting DSM-IV-TR criteria for any other psychotic disorder such as:
. schizophrenia disorganised type (295.10), catatonic type (295.20) and residual type (295.60),
. delusional disorder (297.1), brief psychotic disorder (298.8), shared psychotic disorder (297.3), substance-induced psychotic disorder and psychotic disorder NOS (298.9),
- Patients with ongoing or previous recurrent disease of the central nervous system, especially convulsive disorders or epilepsy, depression, generalised anxiety disorder, mental retardation, brain tumor, delirium, dementia,
- Patients with a history of not responding to risperidone or who have not responded to risperidone for the present episode,
- Patients having a known hypersensitivity to risperidone,
- Patients with a history of neuroleptic malignant syndrome,
- Patients having received long-acting intramuscular neuroleptic medication or barbiturates within 4 weeks before the selection visit,
- Patients treated with fluoxetine, lithium, valproate, valpromide, carbamazepine, phenytoine within 15 days preceding the selection visit,
- Patients treated with antidepressants other than fluoxetine within six days before the selection visit,
- Patients simultaneously treated with two or more QT/QTc interval prolonging drugs and/or two or more concomitant treatments which are CYP 2D6 substrates or inhibitors, and/or 2C19 and/or 3A4 inhibitors, which cannot be stopped and/or must be maintained during the study,
- Patients resistant to antipsychotic treatment defined as failure to respond to at least 3 periods of treatment lasting at least 6 weeks in the preceding 5 years with antipsychotics from at least 2 different chemical classes at maximum effective dosages (e.g. 300 mg per day of chlorpromazine or 20 mg per day of haloperidol or 8 mg per day of risperidone or 15 mg per day of olanzapine), and with no period of relatively good functioning within the previous 5 years,
- Patients who are non responders for the present psychotic episode defined as failure to respond to at least two different adequate antipsychotic treatments, during 3 weeks at an adequate dose,
- Patients with previous or present history of severe or uncontrolled cardiovascular, pulmonary, infectious, autoimmune, renal, hepatic, gastro-intestinal, ophthalmologic, endocrine, blood disease or cancer,
- Patients with severe or uncontrolled arterial hypertension,
- Patients with a known moderate to severe hepatic or renal insufficiency,
- Patients having a known glucose intolerance or diabetes type I or II,
- Patients with a known lactose intolerance,
- Patients with congestive or ischemic heart disease or infarction,
- Patients with a known personal or family history of Long QT Syndrome,
- Patients with history of extreme and/or repeated violence or judged by the investigator to be at risk of suicide or homicide,
- Patients with presence of alcohol or drug abuse or addiction.

Non-inclusion criteria :
- Patients having significant abnormalities seen with the 12-lead ECG as: QTc > 450 ms, AVBIIb, AVBIII, repeated sequences of 3 or m

Study & Design

• Study Type: Interventional clinical trial of medicinal product
• Study Design: Not specified