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Trial details imported from ClinicalTrials.gov
For full trial details, please see the original record at
https://clinicaltrials.gov/study/NCT00168311
Registration number
NCT00168311
Ethics application status
Date submitted
14/09/2005
Date registered
15/09/2005
Date last updated
14/05/2012
Titles & IDs
Public title
A Double-Blind Placebo Controlled Trial of Repetitive Transcranial Magnetic Stimulation (rTMS) in the Treatment of Negative Symptoms in Schizophrenia
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Scientific title
A Double-Blind Placebo Controlled Trial of Repetitive Transcranial Magentic Stimulation (rTMS) in the Treatment of Negative Symptoms in Schizophrenia and Related Disorders
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Secondary ID [1]
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81/02
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Universal Trial Number (UTN)
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Trial acronym
rTMS
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Schizophrenia
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Condition category
Condition code
Mental Health
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Schizophrenia
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Treatment: Devices - Transcranial Magnetic Stimulation
Experimental: Active Treatment - Bilateral high frequency (10 Hertz) rTMS
Sham comparator: Sham rTMS - Bilateral Sham rTMS
Treatment: Devices: Transcranial Magnetic Stimulation
Participants were sequentially randomly assigned to either 15 active bilateral treatments or 15 sham bilateral treatments that were administered on a daily basis, five days per week.
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Intervention code [1]
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Treatment: Devices
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Comparator / control treatment
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Control group
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Outcomes
Primary outcome [1]
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Scale for the Asessment of Negative Symptoms (SANS)
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Assessment method [1]
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Scale for Assessment of Negative Symptoms \[SANS\]. This is a semi structured interview. Assessments are conducted on a six-point scale (0=not at all to 5=severe)with a total score range of 0-70. A score of \>50 is considered to be a moderate-severe intensity.
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Timepoint [1]
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3 weeks
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Eligibility
Key inclusion criteria
* DSM-IV diagnosis of schizophrenia or schizoaffective disorder, age over 18
* Persistent negative symptoms of moderate to severe intensity
* Failure to respond to a minimum of two antipsychotic medications
* No increase or initiation of new antipsychotic therapy in the four weeks prior to entering the trial
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Minimum age
18
Years
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Maximum age
70
Years
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Sex
Both males and females
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Can healthy volunteers participate?
No
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Key exclusion criteria
* Prominent positive symptoms
* Have an unstable medical condition, neurological disorder or any history of seizure disorder or are currently pregnant or lactating
* Previous brain injury or surgery, any metal clips, plates or other metal items in the head, cardiac pacemaker
* Subjects at high risk of violence or suicide as determined by the investigator and treating clinicians
* Substance dependence
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Study design
Purpose of the study
Treatment
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Allocation to intervention
Randomised controlled trial
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
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Masking / blinding
Blinded (masking used)
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Who is / are masked / blinded?
The people receiving the treatment/s
The people assessing the outcomes
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Intervention assignment
Parallel
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Other design features
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Phase
NA
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Type of endpoint/s
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Statistical methods / analysis
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Recruitment
Recruitment status
Completed
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Data analysis
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Reason for early stopping/withdrawal
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Other reasons
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Date of first participant enrolment
Anticipated
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Actual
1/08/2002
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Date of last participant enrolment
Anticipated
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Actual
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Date of last data collection
Anticipated
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Actual
1/07/2007
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Sample size
Target
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Accrual to date
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Final
22
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Recruitment in Australia
Recruitment state(s)
VIC
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Recruitment hospital [1]
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Alfred Psychiatry Research Centre - Melbourne
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Recruitment postcode(s) [1]
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3181 - Melbourne
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Funding & Sponsors
Primary sponsor type
Other
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Name
The Alfred
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Address
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Country
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Ethics approval
Ethics application status
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Summary
Brief summary
There is pilot data to suggest the therapeutic value of rTMS applied to the left prefrontal cortex in the treatment of negative symptoms. Neuroimaging studies demonstrate abnormal activity in this region in patients experiencing negative symptoms. Finally rTMS applied at high frequency shows the capacity to up-regulate cortical activity in a way that would provide an explanation for a therapeutic response. The study involves participants receiving 15 sessions of high frequency rTMS treatment applied bilaterally to the prefrontal cortex over a 3 week period or sham rTMS. Following this double blind phase, participants randomised to placebo treatment will be offered 15 sessions of active treatment. In addition, ppTMS (paired pulse TMS) will be conducted prior to the onset of treatment and after completion of the course, as a means of measuring cortical inhibition and facilitation. NIRS (Near Infra red spectroscopy) will also be conducted prior to, during and after the first and last treatment sessions to allow monitoring of oxygenated and deoxygenated haemoglobin.
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Trial website
https://clinicaltrials.gov/study/NCT00168311
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Trial related presentations / publications
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Public notes
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Contacts
Principal investigator
Name
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Paul B Fitzgerald, MBBS, PhD
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Address
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Alfred Psychiatry Research Centre
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Country
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Phone
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Fax
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Email
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Contact person for public queries
Name
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Address
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Country
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Phone
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Fax
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Email
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Contact person for scientific queries
No information has been provided regarding IPD availability
What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
No documents have been uploaded by study researchers.
Results are available at
https://clinicaltrials.gov/study/NCT00168311
Download to PDF