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TerminatedNCT01615185Updated Mar 1, 2016

A Randomized, Double-blind, Comparison of the Efficacy and Safety of Amisulpride Versus Low-dose Amisulpride Plus Low-dose Sulpiride in the Treatment of Schizophrenia

A Phase 4 interventional study of full-dose amisulpride in Schizophrenia, sponsored by Kaohsiung Kai-Suan Psychiatric Hospital. Terminated at 1 site in Taiwan. Open to participants aged 18 Years to 55 Years. Per ClinicalTrials.gov, last updated 2016-03-01.

Sponsored by Kaohsiung Kai-Suan Psychiatric Hospital · Phase 4, Interventional, and Treatment

Phase
Phase 4
Study type
Interventional
Enrollment
96
Allocation
Randomized
Ages
18 Years to 55 Years
Sex
All
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Study summary

Background: Surveys have shown that antipsychotic drug combinations are frequently prescribed. Amisulpride, an atypical antipsychotic agent, has low incidence of extrapyramidal symptom (EPS) but with high cost compared to sulpiride. The objective of the study is to compare the efficacy and safety of the 800-mg/d amisulpride and 400-mg/d amisulpride plus 800-mg sulpiride in the treatment of acute psychotic exacerbations of schizophrenia.

Method: In this 6-week, double-blind, fixed-dose study, patients with schizophrenia are randomly assigned to amisulpride (800 mg/d) or amisulpride (400 mg/d) plus sulpiride (800 mg/d).The hypothesis is that the two treatment groups have the similar efficacy and safety, but different cost.

Read the detailed description

Background: Antipsychotic monotherapy is recognized as the treatment of choice for patients with schizophrenia. Surveys have shown that antipsychotic drug combinations are frequently prescribed, yet few clinical studies have examined this practice. Amisulpride, an atypical antipsychotic agent, has low incidence of extrapyramidal symptom (EPS) but with high cost compared to sulpiride. It has been reported that mean doses of low-potency typical antipsychotics less than 600 mg/day of chlorpromazine equivalent dose has no higher risk of EPS than atypical antipsychotics. The objective of the study is to compare the efficacy and safety of the 800-mg/d amisulpride and 400-mg/d amisulpride plus 800-mg sulpiride in the treatment of acute psychotic exacerbations of schizophrenia.

Method: In this 6-week, double-blind, fixed-dose study, patients with schizophrenia (DSM-IV diagnosis) are randomly assigned to amisulpride (800 mg/d) or amisulpride (400 mg/d) plus sulpiride (800 mg/d). The hypothesis is that the two treatment groups have the similar efficacy and safety, but different cost. The efficacy assessment was the change from baseline in the score on the Clinical Global Impression-Severity (CGI-S), Positive and Negative Syndrome Scale (PANSS) and subscales (positive scale, negative scale, general psychopathology scale), Calgary Depression Scale for Schizophrenia (CDSS), and Global Assessment of Functioning (GAF). Safety assessments include the change from baseline on Simpson-Angus Rating Scale (SAS), Abnormal Involuntary Movement Scale (AIMS), Barnes Akathisia Scale (BAS), and UKU Side-effects Rating Scale (UKU), and the change from baseline in prolactin levels, body weight, vital sign, blood pressure, AC glucose level, and lipid profiles(cholesterol, high density lipid protein [HDL], low density lipid protein [LDL], and triglyceride [TG]).

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Conditions studied

  • Schizophrenia

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Keywords

  • schizophrenia
  • amisulpride
  • sulpiride
  • antipsychotic combination
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In context

Schizophrenia

3,539 studies on the registry are indexed under Schizophrenia; 473 are open to participants now.

This study's enrollment of 96 is above the median of 70 across 2,924 interventional studies indexed under Schizophrenia.

Browse Schizophrenia studies →

Lead sponsor

Kaohsiung Kai-Suan Psychiatric Hospital is the lead sponsor of 10 studies on the registry; 1 is open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years to 55 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • schizophrenia
  • CGI >=4
  • washout of antipsychotics at least 3-5 days
  • written informed consents

Exclusion criteria

Exclusion Criteria:

  • History of serious adverse events to sulpiride or amisulpride
  • History of neuroleptic malignant syndrome or tardive dyskinesia to antipsychotics
  • treatment-resistant schizophrenia
  • long-acting antipsychotics in the past 3 months
  • comorbid with substance abuse/dependence
  • female subjects with pregnancy
  • severe physical illness
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Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
96 participants (actual)

Study arms

  • Experimental
    sulpiride plus amisulpride

    sulpiride 800mg/d + amisulpride 400mg/d

    Drug: full-dose amisulpride

  • Active comparator
    full-dose amisulpride

    amisulpride 800mg/d

    Drug: full-dose amisulpride

Interventions

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What researchers measure

Primary outcomes

  1. change from baseline in Positive and Negative Syndrome Scale (PANSS) total scores

    Time frame: The PANSS was rated at baseline, and again at weeks 1, 2, 3, 4, and 6 (or on early termination).

Secondary outcomes

  1. changes from baseline in the scores on several psychopathology scales for efficacy

    psychopathology scales for efficacy include: Clinical Global Impression-Severity (CGI-S), PANSS positive scale, PANSS negative scale, PANSS general psychopathology scale, Calgary Depression Scale for Schizophrenia (CDSS), and Global Assessment of Functioning (GAF)

    Time frame: The CGI-S, PANSS, CDSS, and GAF were rated at baseline, and again at weeks 1, 2, 3, 4, and 6 (or on early termination).

  2. Assessments of safety for extrapyramidal symptoms (EPS)

    The severity of EPS was assessed by the following neurological scales: the Abnormal Involuntary Movement Scale (AIMS), Barnes Akathisia Scale (BAS), and the Simpson-Angus Rating Scale (SAS)

    Time frame: AIMS, BAS, and SAS were administered at baseline and at weeks 1, 2, 3, 4, and 6 (or on early termination)

  3. Assessments of safety for general adverse events

    General adverse events were evaluated by a standardized the UKU Side Effect Rating Scale. A score of 1, 2 or 3 on any UKU item that first occurred or worsened during treatment indicated adverse events "cases".

    Time frame: UKU was administered at baseline and at weeks 1, 2, 3, 4, and 6 (or on early termination)

  4. Other safety of clinical trial

    Body weights, body mass index (BMI), pulse rate, blood pressure (systolic and diastolic), 12-lead electrocardiogram (ECG) for QTc intervals (Bazett's correction of QT interval), and laboratory tests were performed to determine safety. Laboratory tests included fasting glucose, liver function (alanine aminotransferase \[ALT\] and aspartate aminotransferase \[AST\]), renal function (blood urea nitrogen \[BUN\], creatinine), lipid profiles (triglycerides, cholesterol, high density lipoprotein \[HDL\], and low density lipoprotein \[LDL\]), and prolactin level.

    Time frame: Body weight, BMI, pulse rate, and blood pressure were checked at baseline and at weeks 1, 2, 3, 4, and 6 (or on early termination). ECG and laboratory tests were assessed at baseline and week 6.

  5. Assessments of quality of life

    The SF-36, with two primary-factor analytic components: the physical component summary and the mental component summary, was used to measure quality of life.

    Time frame: Medical Outcomes Study Short-Form 36 was assessed at baseline and week 6

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Study locations

1 site
  • Kai-Suan Psychiatric Hospital
    Kaohsiung City, 802, Taiwan
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References and documents

Publications

  • Leucht S, Wahlbeck K, Hamann J, Kissling W. New generation antipsychotics versus low-potency conventional antipsychotics: a systematic review and meta-analysis. Lancet. 2003 May 10;361(9369):1581-9. doi: 10.1016/S0140-6736(03)13306-5. PubMed 12747876 ↗
  • Kapur S, Seeman P. Does fast dissociation from the dopamine d(2) receptor explain the action of atypical antipsychotics?: A new hypothesis. Am J Psychiatry. 2001 Mar;158(3):360-9. doi: 10.1176/appi.ajp.158.3.360. PubMed 11229973 ↗
  • McKeage K, Plosker GL. Amisulpride: a review of its use in the management of schizophrenia. CNS Drugs. 2004;18(13):933-56. doi: 10.2165/00023210-200418130-00007. PubMed 15521794 ↗
  • Chakos MH, Glick ID, Miller AL, Hamner MB, Miller DD, Patel JK, Tapp A, Keefe RS, Rosenheck RA. Baseline use of concomitant psychotropic medications to treat schizophrenia in the CATIE trial. Psychiatr Serv. 2006 Aug;57(8):1094-101. doi: 10.1176/ps.2006.57.8.1094. PubMed 16870959 ↗
  • Lin CH, Wang FC, Lin SC, Huang YH, Chen CC, Lane HY. Antipsychotic combination using low-dose antipsychotics is as efficacious and safe as, but cheaper, than optimal-dose monotherapy in the treatment of schizophrenia: a randomized, double-blind study. Int Clin Psychopharmacol. 2013 Sep;28(5):267-74. doi: 10.1097/YIC.0b013e3283633a83. PubMed 23778382 ↗
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 1, 2016, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT01615185
Lead sponsor
Kaohsiung Kai-Suan Psychiatric Hospital
Responsible party
Ching-Hua Lin, MD, PhD (Chief of Adult Psychiatry, Kaohsiung Kai-Suan Psychiatric Hospital) — Principal investigator
First posted
Jun 8, 2012
Start date
Jan 2008
Primary completion
Dec 2011
Completion
Dec 2011
Last update
Mar 1, 2016

Study contacts

Ching-Hua Lin, MD, PhD
principal investigator · Kai-Suan Psychiatric Hospital

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is terminated, as verified in Feb 2016. You cannot join it, but the record below documents what was studied.

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