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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT02905604
Other study ID # MA-SCH-DEP
Secondary ID
Status Completed
Phase N/A
First received
Last updated
Start date September 29, 2016
Est. completion date January 20, 2020

Study information

Verified date April 2020
Source Uppsala University
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

The primary objective is to evaluate if repetitive transcranial magnetic stimulation (rTMS) with theta burst frequency over dorsomedial prefrontal cortex (DMPFC) is an effective treatment for negative symptoms (anhedonia and avolition) in schizophrenia or depression. Other objectives are to increase the understanding of the underlying neurobiology of negative symptoms and the mechanisms for the treatment effect of rTMS.


Description:

This is a double blind parallel randomized sham controlled trial. The intervention is intermittent theta-burst stimulation (iTBS), which is rTMS with theta burst frequency with 2400 pulses/day in two sessions at 90% of resting motor threshold intensity over the DMPFC, given in ten days on week days (10 treatment days must be completed within a maximum of 21 days). Stratified (depression and schizophrenia diagnosis) block randomization will be used for treatment allocation to active or sham side of the stimulation coil.

Patients will be referred from their regular psychiatric care facilities. At the screening visit the patient will be assessed if fulfilling all inclusion and none of the exclusion criteria. At the baseline visit thorough psychiatric, cognitive and neurophysiological examination will be performed. The latter include investigation of cortical excitability with paired-pulse TMS, mismatch negativity (MMN, a measure of aberrant stimulus detection), startle-response, habituation, electrodermal activity (EDA), near-infrared spectroscopy (NIRS), 24 hour actigraphy and heart rate registration.

During 10 week days the participants will receive a daily rTMS (or sham) treatment. On the day after last rTMS treatment the examinations performed at the baseline visit will be repeated. Four weeks after baseline there is a shorter visit to follow-up symptoms and functioning. At the end of this visit the blinding is unmasked and patients who have received sham rTMS will be offered active treatment in an open-phase. After the four weeks follow-up there are two additional and identical visits at 10 and 26 weeks after start of treatment.


Recruitment information / eligibility

Status Completed
Enrollment 60
Est. completion date January 20, 2020
Est. primary completion date December 2019
Accepts healthy volunteers No
Gender All
Age group 18 Years to 59 Years
Eligibility Inclusion Criteria:

- diagnosis of schizophrenia spectrum disorders or uni- or bipolar depression verified through a Mini International Neuropsychiatric Interview (M.I.N.I.)

- negative symptoms with anhedonia and avolition: =40 points on the The Motivation and Pleasure Scale-Self-Report (MAP-SR)

- unchanged medication the past month

- provision of signed informed consent form

Exclusion Criteria:

- epilepsy

- conductive ferromagnetic or other magnetic sensitive metals implanted in the head or within 30 cm of the treatment coil

- implanted device that is activated or controlled in any way by physiological signals

- implanted mediation pumps

- intracardiac lines, even when removed

- addiction (illicit drugs or alcohol) and pregnancy

- any condition that seriously increases the risk of non-compliance or loss of follow-up

Study Design


Intervention

Device:
dmPFC iTBS
2400 pulses/day over 10 week days over bilateral dmPFC using MagPro X100 and the cool D-B80 A/P coil
dmPFC Sham iTBS
Sham iTBS

Locations

Country Name City State
Sweden Department of neuroscience, psychiatry, unit for Brain Stimulation and psychiatric clinical trials Uppsala

Sponsors (1)

Lead Sponsor Collaborator
Uppsala University

Country where clinical trial is conducted

Sweden, 

Outcome

Type Measure Description Time frame Safety issue
Primary Mean change of total score on the Clinical Assessment Interview for Negative Symptoms (CAINS). From baseline to day after last treatment, i.e. 14-21 days after baseline
Secondary Mean change of total score on the CAINS From baseline to four weeks after baseline.
Secondary Change in Clinical Global Impression (CGI) score From baseline to four weeks after baseline.
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