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CompletedNCT00168311rTMSUpdated May 14, 2012Results posted

A Double-Blind Placebo Controlled Trial of Repetitive Transcranial Magnetic Stimulation (rTMS) in the Treatment of Negative Symptoms in Schizophrenia

An interventional study of Transcranial Magnetic Stimulation and sham TMS in Schizophrenia, sponsored by The Alfred. Completed at 1 site in Australia. Open to participants aged 18 Years to 70 Years. Per ClinicalTrials.gov, last updated 2012-05-14.

Sponsored by The Alfred · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
22
Allocation
Randomized
Ages
18 Years to 70 Years
Sex
All
01

Study 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.

Read the detailed description

The main outcome measure used is the SANS (Scale for the Assessment of Negative Symptoms. This is a semi strucutured interview which provides scores from 0-70. This is administered at baseline, week 2, 3, 5 and 6.

Other outcome measures administered are (frequency mentioned above): PANSS (Positive and Negative Syndrome Scale) and the Calgery Depression Scale for Schizophrenia, A cognitive battery is also administered.

Inclusion Criteria:

  • Diagnostic and Statistical Manual-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 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
02

Conditions studied

  • Schizophrenia

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Keywords

  • Transcranial Magnetic Stimulation
  • Schizophrenia
  • Negative Symptoms
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 22 is below the median of 70 across 2,872 interventional studies indexed under Schizophrenia.

Browse Schizophrenia studies →

Lead sponsor

The Alfred is the lead sponsor of 45 studies on the registry; 4 are open to participants now.

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

04

Who can participate

Ages eligible
18 Years to 70 Years
Sexes eligible
All
Accepts healthy volunteers
No

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

Exclusion criteria

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
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Outcomes assessor)
Enrollment
22 participants (actual)

Study arms

  • Experimental
    Active Treatment

    Bilateral high frequency (10 Hertz) rTMS

    Device: Transcranial Magnetic Stimulation

  • Sham comparator
    Sham rTMS

    Bilateral Sham rTMS

    Device: sham TMS

Interventions

  • DeviceTranscranial 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.

  • Devicesham TMS
06

What researchers measure

Primary outcomes

  1. Scale for the Asessment of Negative Symptoms (SANS)

    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.

    Time frame: 3 weeks

07

Results

Posted May 14, 2012
Limitations and caveats
Insufficient time period used to be able to establish a substantive therapeutic effect of rTMS; standard dosing method may be inadequate due to volumetric changes in brain regions in schizophrenia; concurrent antipsychotic medication.

Participant flow

A total of 20 patients were randomly assigned. Patients were recruited from the outpatient department of two public area mental health services and by referral from a number of private psychiatrists between January 2003 and July 2007.

Participant flow — Overall Study
MilestoneActive TreatmentSham Treatment
Started1210
Completed128
Not completed02

Outcome measures

PrimaryScale for the Asessment of Negative Symptoms (SANS)

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.

Time frame:
3 weeks
Reported as:
Mean · Scores on a scale
Scale for the Asessment of Negative Symptoms (SANS)
Scores on a scaleActive TreatmentSham Treatment
Scale for the Asessment of Negative Symptoms (SANS)38.8 ± 11.053.7 ± 8.3

Adverse events

Non-serious events are listed at a 1% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Active Treatment—0/12 (0%)0/12 (0%)
Sham Treatment—0/10 (0%)0/10 (0%)

Baseline characteristics

Age, Categorical
Age, Categorical(Participants)Active TreatmentSham TreatmentTotal
<=18 years000
Between 18 and 65 years121022
>=65 years000
Sex: Female, Male
Sex: Female, Male(Participants)Active TreatmentSham TreatmentTotal
Female224
Male10818
Region of Enrollment
Region of Enrollment(participants)Active TreatmentSham TreatmentTotal
Australia121022
08

Study locations

1 site
  • Alfred Psychiatry Research Centre
    Melbourne, Victoria 3181, Australia
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 14, 2012, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT00168311
Lead sponsor
The Alfred
Responsible party
Assoc Professor Paul Fitzgerald (Professor, The Alfred) — Principal investigator
First posted
Sep 15, 2005
Start date
Aug 2002
Primary completion
Jul 2007
Completion
Jul 2007
Results posted
May 14, 2012
Last update
May 14, 2012

Study contacts

Paul B Fitzgerald, MBBS, PhD
principal investigator · Alfred Psychiatry Research Centre

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Apr 2012. You cannot join it, but the record below documents what was studied.

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