CClinicalTrials.gg
CompletedNCT00300846Updated Nov 8, 2013

A Study of Adjunctive Treatment of Aripiprazole in Schizophrenic Patients

A Phase 4 interventional study of aripiprazole and Placebo in Schizophrenia, sponsored by Otsuka Pharmaceutical Development & Commercialization, Inc.. Completed at 57 sites in 12 countries. Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2013-11-08.

Sponsored by Otsuka Pharmaceutical Development & Commercialization, Inc. · Phase 4, Interventional, and Treatment

Phase
Phase 4
Study type
Interventional
Enrollment
200
Allocation
Randomized
Ages
18 Years to 65 Years
Sex
All
01

Study summary

The purpose of this study is to evaluate the effect on patient weight of adjunctive therapy of aripiprazole with clozapine versus clozapine monotherapy, in schizophrenic patients who are not optimally controlled on clozapine.

02

Conditions studied

  • Schizophrenia

Browse trials for

03

In context

Schizophrenia

3,471 studies on the registry are indexed under Schizophrenia; 472 are open to participants now.

This study's enrollment of 200 is above the median of 70 across 2,872 interventional studies indexed under Schizophrenia.

Browse Schizophrenia studies →

Lead sponsor

Otsuka Pharmaceutical Development & Commercialization, Inc. is the lead sponsor of 289 studies on the registry; 18 are open to participants now.

Of its 104 completed or terminated interventional studies of FDA-regulated products, 69 (66%) have results posted.

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

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Patients with schizophrenia treated with clozapine (200-900 mg/day), who gained at least 2.5 kg while on clozapine.

Exclusion criteria

Exclusion Criteria:

  • Patients known to be allergic to aripiprazole
  • Hospitalized patients
  • Patients who have previously received study medication in an aripiprazole clinical study or who have participated in any clinical trial with an investigational agent within the past month.
05

Study design

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

Study arms

  • Active comparator
    A1

    Drug: aripiprazole

  • Placebo comparator
    A2

    Drug: Placebo

Interventions

  • Drugaripiprazole

    Tablets, Oral, 5 mg, 10 mg, 15 mg, once daily, 16 weeks followed by 12 weeks of Open-Label extension phase (optional).

    Also known as: Abilify

  • DrugPlacebo

    Tablets, Oral, 0 mg, once daily, 16 weeks followed by 12 weeks of Open-Label extension phase (optional)

06

What researchers measure

Primary outcomes

  1. Evaluate effect on patient weight of adjunctive therapy of aripiprazole with clozapine versus clozapine mono-therapy in schizophrenic patients who are not optimally controlled on clozapine.

  2. The mean change from baseline in patient weight at Week 16 (LOCF) will be compared between the 2 groups.

Secondary outcomes

  1. Efficacy (PANSS, CGI)

  2. Effectiveness (IAQ, GAF)

  3. Patient Reported Outcomes

  4. Safety

07

Study locations

57 sites
  • Local Institution
    Graz, Austria
  • Local Institution
    Innsbruck, Austria
  • Local Institution
    Wien, Austria
  • Local Institution
    Brno - Bohunice, Czech Republic
  • Local Institution
    Hradec Kralove, Czech Republic
  • Local Institution
    Litomerice, Czech Republic
  • Local Institution
    Opava, Czech Republic
  • Local Institution
    Praha, Czech Republic
  • Local Institution
    Helsingin Kaupunki, Finland
  • Local Institution
    Tampere, Finland
  • Local Institution
    Turku, Finland
  • Local Institution
    Brumath Cedex, France
  • Local Institution
    Bully Les Mines, France
  • Local Institution
    Clermont-Ferrand Cedex, France
  • Local Institution
    Limoges Cedex, France
  • Local Institution
    Lyon Cedex 08, France
  • Local Institution
    Nimes, France
  • Local Institution
    Paris Cedex 14, France
  • Local Institution
    Rennex Cedex 7, France
  • Local Institution
    Sotteville Les Rouen, France
  • Local Institution
    Augsburg, Germany
  • Local Institution
    Berlin, Germany
  • Local Institution
    Duisburg, Germany
  • Local Institution
    Haar, Germany
  • Local Institution
    Heidelberg, Germany
  • Local Institution
    Mannheim, Germany
  • Local Institution
    Budapest, Hungary
  • Local Institution
    Szolnok, Hungary
  • Local Institution
    Krakow, Poland
  • Local Institution
    Leszno, Poland
  • Local Institution
    Skorzewo, Poland
  • Local Institution
    Torun, Poland
  • Local Institution
    Warszawa, Poland
  • Local Institution
    Soweto, Gauteng, South Africa
  • Local Institution
    Vereeniging, Gauteng, South Africa
  • Local Institution
    Durban, Kwa Zulu Natal, South Africa
  • Local Institution
    Bellville, Western Cape, South Africa
  • Local Institution
    Cape Town, Western Cape, South Africa
  • Local Institution
    Bromma, Sweden
  • Local Institution
    Falkoping, Sweden
  • Local Institution
    Linkoping, Sweden
  • Local Institution
    Lulea, Sweden
  • Local Institution
    Malmo, Sweden
  • Local Institution
    Solna, Sweden
  • Local Institution
    Uppsala, Sweden
  • Local Institution
    Varberg, Sweden
  • Local Institution
    Vastra Frolunda, Sweden
  • Local Institution
    Bern 60, Switzerland
  • Local Institution
    Antalya, Turkey
  • Local Institution
    Istanbul, Turkey
  • Local Institution
    Izmir, Turkey
  • Local Institution
    Exeter, Devon, United Kingdom
  • Local Institution
    Teignmouth, Devon, United Kingdom
  • Local Institution
    Welwyn Garden City, Hertfordshire, United Kingdom
  • Local Institution
    Hull, North Yorkshire, United Kingdom
  • Local Institution
    Dundee, Tayside, United Kingdom
  • Local Institution
    London, United Kingdom
08

References and documents

Publications

  • Fleischhacker WW, Heikkinen ME, Olie JP, Landsberg W, Dewaele P, McQuade RD, Loze JY, Hennicken D, Kerselaers W. Effects of adjunctive treatment with aripiprazole on body weight and clinical efficacy in schizophrenia patients treated with clozapine: a randomized, double-blind, placebo-controlled trial. Int J Neuropsychopharmacol. 2010 Sep;13(8):1115-25. doi: 10.1017/S1461145710000490. Epub 2010 May 12. PubMed 20459883 ↗
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 8, 2013, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT00300846
Lead sponsor
Otsuka Pharmaceutical Development & Commercialization, Inc.
Collaborators
Otsuka America Pharmaceutical
First posted
Mar 10, 2006
Start date
Dec 2005
Primary completion
Jul 2007
Completion
Jul 2007
Last update
Nov 8, 2013

Study contacts

Bristol-Myers Squibb
study director · Bristol-Myers Squibb
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jun 2008. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion