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Clinical Trial Details — Status: Not yet recruiting

Administrative data

NCT number NCT03498937
Other study ID # P/2017/319
Secondary ID
Status Not yet recruiting
Phase N/A
First received
Last updated
Start date May 2019
Est. completion date December 2020

Study information

Verified date April 2018
Source Centre Hospitalier Universitaire de Besancon
Contact Djamila BENNABI, MD PhD
Phone +33381219007
Email dbennabi@chu-besancon.fr
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

The study aims to evaluate the impact of transcranial direct current stimulation (tDCS) on impulsiveness of adults suffering from Borderline Personality Disorder. Short- and long-term effects are assessed by electroencephalography (EEG) records, experimental tasks and self-rated scales.


Description:

Impulsivity, considered as the tendency to express spontaneous, excessive and/or unplanned behavior, is recognized as a major factor involved in suicidal behavior and self-harm behaviors. It consists in one of the diagnostic criteria of Borderline Personality Disorder, allowing as well assessment of its clinical severity. There is so far no specific treatment concerning impulsivity. From a neurobiological perspective, the prefrontal cortex is considered as a critical region in the cognitive control of behaviors. Previous studies have associated an hypoactivation of the dorsolateral prefrontal cortex (dlPFC) and the dorsal part of the anterior cingulate cortex to Borderline Personality Disorder.

Transcranial direct current stimulation (tDCS) is a technique of noninvasive brain stimulation which delivers a subthreshold electrical current to the scalp, manipulating the resting membrane potential. It has shown cognitive function improvement, both in healthy individuals and psychiatric populations. Modulation of the dlPFC could therefore represent a mean of reducing impulsivity in those patients.

With a prospective, sham-controlled, crossover, double-blind design, this study aims to evaluate the impact of bilateral tDCS over the dlPFC on the impulsive dimension of adults suffering from Borderline Personality Disorder. Subjects will be submitted to 10 tDCS stimulation sessions (active or sham) for five consecutive days (2 sessions of 30 minutes/day). Current intensity will be of 2 mA, through 25 cm² surface electrodes, placed over the dlPFC (anode position over F4 and cathode over F3, according to the EEG 10-20 international system). Subjects who undergo active stimulation sessions will be then submitted to sham sessions and vice-versa. Baseline measures will be compared to those obtained immediately after the end of sessions (5 days: short-term effects), and to 12 and 30 days later (long-term effects). Active and sham stimulation sessions outcomes will as well be compared.


Recruitment information / eligibility

Status Not yet recruiting
Enrollment 50
Est. completion date December 2020
Est. primary completion date June 2020
Accepts healthy volunteers No
Gender All
Age group 18 Years to 100 Years
Eligibility Inclusion Criteria:

- Man or woman older than 18 years old

- Right-handed

- Signed Informed Consent form

- Subject affiliated to or beneficiary from a French social security regime

- Inpatient or outpatient at the Adult Psychiatry Service

- Diagnosis of Borderline Personality Disorder according to the 5th edition of Diagnostic and Statistical Manual of Mental Disorders (DSM-5) criteria and confirmation by the Structured Clinical Interview for DSM Disorders (SCID-II)

- Absence of addictive comorbidities (except: tobacco, tea, coffee)

- Absence of severe progressive neurologic and/or somatic pathologies (specially tumors, degenerative diseases)

Exclusion Criteria:

- Younger than 18 years old

- Left-handed

- Subject under measure of protection or guardianship of justice

- Presence of psychiatric comorbidities (chronic psychosis, Bipolar Disorder)

- Subject beneficiary from a legal protection regime

- Subject unlikely to cooperate or low cooperation stated by investigator

- Subject not covered by social security

- Pregnant woman

- Subject being in the exclusion period of another study or provided for by the "National Volunteer File"

Study Design


Intervention

Device:
Active tDCS
10 active tDCS sessions (2 sessions/day for 5 days, 30 min each, 2 mA) applied to the dlPFC
Sham tDCS
10 sham tDCS sessions (2 sessions/day for 5 days, 30 min each, 0 mA) applied to the dlPFC

Locations

Country Name City State
France CHU Besancon Besancon Franche-Comte
France Pôle Hospitalo-Universitaire de Psychiatrie du Grand Nancy Nancy
France Centre Hospitalier Spécialisé de Rouffach Rouffach

Sponsors (1)

Lead Sponsor Collaborator
Centre Hospitalier Universitaire de Besancon

Country where clinical trial is conducted

France, 

Outcome

Type Measure Description Time frame Safety issue
Primary EPs during BART Amplitude variation of evoked potentials (EPs) detected by electroencephalography (EEG) during the Balloon Analogue Risk Task (BART), assessing risk-taking behavior. Variation will be obtained by comparing records before beginning of stimulation sessions with 5, 12 and 30 days after active and/or sham tDCS. Baseline (Day 0), Day 5, Day 12 and Day 30 post-tDCS
Secondary BIS-10 scores Compared scores from the French version of the Barratt Impulsiveness Scale (BIS-10). The French version of the BIS-10 is a self-rated 34 item questionnaire, composed by three subscales: motor-impulsivity, cognitive-impulsivity and non-planning-impulsivity. Each item is scored on a 0 to 4 points scale. Higher scores indicate higher levels of impulsivity. Baseline (Day 0), Day 5, Day 12 and Day 30 post-tDCS
Secondary HDRS scores Compared scores from the Hamilton Depression Rating Scale (HDRS). The HDRS is a clinician-rated 17 item scale which allows depression severity assessment and follow-up. Each item is scored on a 3 or 5 point scale. Scores are represented as follows: 0-7 Normal, 8-13 Mild Depression, 14-18 Moderate Depression, 19-22 Severe Depression, =23 Very Severe Depression. Baseline (Day 0), Day 5, Day 12 and Day 30 post-tDCS
Secondary UPPS-P scores Compared scores from the Urgency, Premeditation (lack of), Perseverance (lack of), Sensation Seeking, Positive Urgency Impulsive Behavior Scale (UPPS-P). The French version of the UPPS-P is a self-rated 45 item scale, evaluating the following components: urgency, lack of premeditation, lack of perseverance and sensation seeking. Each item is scored on a base of 4 points. Higher scores indicate higher levels of impulsivity. Baseline (Day 0), Day 5, Day 12 and Day 30 post-tDCS
Secondary MADRS scores Compared scores from the Montgomery and Asberg Depression Rating Scale (MADRS). The MADRS is clinician-rated 10 item scale, scored in a base of 6 points per item. Cutoff points are: 0-6 Asymptomatic, 7-19 Mild Depression, 20-34 Moderate Depression and >34 Severe Depression. Baseline (Day 0), Day 5, Day 12 and Day 30 post-tDCS
Secondary C-SSRS scores Compared scores from the Columbia-Suicide Severity Rating Scale (C-SSRS). The C-SSRS is a clinician-rated tool that evaluates suicidal ideation and behavior. It is composed by 6 "yes/no" questions. High suicide risk is indicated when "yes" is answered to questions 4, 5 or 6. Baseline (Day 0), Day 5, Day 12 and Day 30 post-tDCS
Secondary Go/No-Go task Compared results from the experimental Go/No-Go task, assessing response inhibition. Baseline (Day 0), Day 5, Day 12 and Day 30 post-tDCS
Secondary Stroop task Compared results from the experimental Stroop task, assessing response inhibition. Baseline (Day 0), Day 5, Day 12 and Day 30 post-tDCS
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