Dissociative DisorderIDENTITYNCT06330467
Prevalence of Dissociative Identity Disorder in At-risk Outpatient Groups Reporting Childhood Trauma.
A study testing psychometric assessment and semi-structured clinical interview in people with Dissociative Disorder, run by Centre Psychothérapique de Nancy at 3 sites in France.
Trial summary
The investigators will study the prevalence of dissociative identity disorder (DID) in three populations at risk in cases of childhood psychotrauma : patients with a diagnosis of borderline personality, patients with a diagnosis of functional dissociative crises (FDC) and patients with early psychosis. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Dissociative Disorder
- What is being tested?
- psychometric assessment and semi-structured clinical interview
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 350 participants
- Where
- 3 sitesFrance
- Study dates
- 4 Jun 2024to 18 Aug 2026
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
I - Inclusion Criteria:
I-1: For all groups:
- Male or female
- Age > or = 18
- Enrolled in or benefiting from a social security scheme
- Patient fluent in French
- Patient willing to undergo a psychological evaluation between 1h30 and 3h30
- Patient with a known history of psychotrauma in childhood before the age of 18 (sexual abuse, mistreatment, school harassment, natural disasters, attacks, etc.).
- Patient having received and understood complete information on the organization of the research and having given written free and informed consent prior to participation in the study.
I-2 : Patients in the borderline group
- Patients with main diagnosis of emotionally labile personality
- Patients with at least one psychiatric hospitalization in the last 3 years
I-3 : Patients in the early psychosis group
Patient with a diagnosis of mental state at risk of psychosis according to the criteria defined by CAARMS (Comprehensive Assessment of At Risk Mental State) OR Patients diagnosed with a first psychotic episode on an outpatient basis or following a hospital stay
I-4 : Patients in the functional dissociative crises group
Patients diagnosed with functional dissociative crises by a specialized epileptologist
II- Non-inclusion criteria
- Impairment of the subject making it difficult or not impossible to participate in the trial or to understand the information provided to him/her
- Patients with specific difficulties in understanding SCID-D questions
- Psychiatric condition requiring hospitalization
- Patients with symptoms of recent toxic consumption (alcohol, cannabis, other ...) disrupting assessment responses
- Patient taking part in a pharmacological study involving a pro-dissociative molecule of the psychedelic type
- Pregnant, parturient or nursing mothers
- Person deprived of liberty by judicial or administrative decision
- Person in a life-threatening emergency
- An adult under legal protection (guardianship, curatorship, safeguard of justice)
- Person unable to give consent and not subject to a legal protection measure
Trial locations and contacts
3 sites in 1 country. Contact the study team or a site near you to ask about taking part.
France3 sites, 3 recruiting
- Not yet recruiting
Centre Psychothérapique de Nancy - CLIP
Nancy
Vincent LAPRÉVOTE, vincent.laprevote@cpn-laxou.com
Vincent LAPRÉVOTE
- Recruiting
Centre Psychothérapique de Nancy - CMP Jacquard et Des Près
Nancy
Coraline HINGRAY, coraline.hingray@cpn-laxou.com
Coraline HINGRAY
- Recruiting
CHRU Nancy - Neurology department
Nancy
Coraline HINGRAY, coraline.hingray@cpn-laxou.com
Coraline HINGRAY
About this study
The investigators will study the prevalence of dissociative identity disorder (DID) in three populations at risk in cases of childhood psychotrauma : patients with a diagnosis of borderline personality, patients with a diagnosis of functional dissociative crises (FDC) and patients with early psychosis.
The investigators will also study the prevalence of other dissociative disorders and the frequency of complex post-traumatic stress disorder.
Read more
The investigators will also look for correlations between the type of maltreatment in childhood, the age of onset of trauma and the type of diagnosis of dissociative disorders.
The investigators hope to include 150 borderline patients, 150 FDC patients and 50 early psychosis patients.
Data collection will be done via a psychometric administration of 7 self-completion questionnaires as well as the completion of the SCID-D semi-structured interview.
- Conditions
- Dissociative Disorder
- Being tested
- psychometric assessment, semi-structured clinical interview
- Keywords
- Dissociative Identity Disorder (DID), Psychosis, Functional Dissociative Crises (FDC), Complex PTSD, Borderline
- Medical subject headings
- Dissociative Disorders, Dissociative Identity Disorder, Psychotic Disorders
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
psychometric assessmentDiagnostic test
Psychometric testing to assess trauma and dissociative disorders, and in particular dissociative identity disorder.
semi-structured clinical interviewDiagnostic test
Semi-structured interview for the assessment of dissociative disorders (SCID-D : Semi-structured Clinical Interview for diagnosing DSM-5 and ICD-11 Dissociative Disorders)
| Study group | Role | What they receive |
|---|---|---|
| Borderline | Other | Borderline patients Receives: Diagnostic Test: psychometric assessment; Diagnostic Test: semi-structured clinical interview |
| Functional Dissociative Crises (FDC) | Other | FDC patients Receives: Diagnostic Test: psychometric assessment; Diagnostic Test: semi-structured clinical interview |
| Early psychosis | Other | Early psychosis patients : mental state at risk for psychosis and first psychotic episode Receives: Diagnostic Test: psychometric assessment; Diagnostic Test: semi-structured clinical interview |
What is being measured
The primary outcome is the main question the study is designed to answer.
SCID-D : Semi-structured Clinical Interview for diagnosing DSM-5 and ICD-11 Dissociative Disorders / DSM = Diagnostic and Statistical Manual of Mental Disorders / ICD = International Classification of Diseases
assesses the dissociative identity disorder
Measured: Inclusion visit
Secondary outcomes (8)
SCID-D : Semi-structured Clinical Interview for diagnosing DSM-5 and ICD-11 Dissociative Disorders
assesses the 4 others domains of dissociative disorders
Measured: Inclusion visit
CTQ-28 : Childhood Trauma Questionnaire
assesses history of childhood abuse and childhood trauma. For the CTQ-28, the overall score is not really relevant, but rather the scores for each type of abuse. For each type of maltreatment, there are differences in severity, ranging from "none" to "severe", with threshold scores for each level. In fact, there is no real overall minimum or maximum score.
Measured: Inclusion visit
life events inventory DSM-5
assesses history of potentially traumatic life events. There is no numerical score, it's simply an inventory of potentially traumatic life events.
Measured: Inclusion visit
PCL-5 : Posttraumatic stress disorder CheckList-5
assess the Post Traumatic Stress Disorder. For the PCL-5, the threshold score is 33, so a score of 33 or more suggests the presence of PTSD : the higher the score, the greater the symptomatology. The score is not a value used for interpretation purposes. The investigators use only threshold scores, or diagnostic criteria.
Measured: Inclusion visit
ITQ : International Trauma Questionnaire
assesses simple and complex post-traumatic stress syndrome. For the ITQ, there is no real numerical score; the diagnosis of PTSD or complex PTSD is made on the basis of the diagnostic criteria met.
Scores are not given with numbers, but only with the presence or absence of simple or complex PTSD. There is no minimum or maximum score.
Measured: Inclusion visit
SDQ-20 : Somatoform Dissociative questionnaire
assess somatoform dissociation. For the SDQ-20, the threshold score is 28, and there are no levels of severity: the higher the score, the more severe the somatoform dissociative disorders. However, the score should be treated with caution, as if the symptoms reported by the patient are explained by a medical cause, we cannot conclude that dissociative disorders are present despite the score.
Measured: Inclusion visit
DIS-Q : Dissociation Questionnaire
assess the dissociative disorders. For the DIS-Q, the threshold score is 2.5. The score is not a value used for interpretation purposes. The investigators use only threshold scores, or diagnostic criteria.
Measured: Inclusion visit
DES : Dissociative Experience Scale
assess the dissociative disorder. For the DES, there is a threshold score of 15, and the higher the score, the more severe the dissociative disorders, but there are no multiple levels of severity. The score is not a value used for interpretation purposes. The investigators use only threshold scores, or diagnostic criteria.
Measured: Inclusion visit
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted26 Mar 2024
- Study start4 Jun 2024
- Primary completion18 Aug 2026 (estimated)
- Study completion18 Aug 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Dissociative DisorderStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Diagnosis
- Allocation
- Non-randomised
- Intervention model
- Parallel groups
- Model description
- 3 groups : borderline, early psychosis and FDC.
- Masking
- None (open label)
- Enrolment
- 350 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Centre Psychothérapique de Nancy
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Coraline HINGRAY, Principal investigator, Centre Psychothérapique de Nancy
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06330467
- Sponsor's protocol ID
- 2023-A02442-43
- Other IDs
- RIPH 2023-02
- Acronym
- IDENTITY
- Status last verified
- Apr 2026
- First submitted
- 19 Mar 2024
- Last updated
- 24 Apr 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 24 Apr 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Prevalence of Dissociative Identity Disorder in At-risk Outpatient Groups Reporting Childhood Trauma.
- ClinicalTrials.gov ID
- NCT06330467
- Acronym / sponsor ID
- IDENTITY / 2023-A02442-43
- Conditions
- Dissociative Disorder
- Keywords
- Dissociative Identity Disorder (DID), Psychosis, Functional Dissociative Crises (FDC), Complex PTSD, Borderline
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 350 participants (estimated)
- Lead sponsor
- Centre Psychothérapique de NancyUniversity, hospital or other
- Study start
- 4 Jun 2024 (actual)
- Primary completion
- 18 Aug 2026 (estimated)
- Study completion
- 18 Aug 2026 (estimated)
- First posted
- 26 Mar 2024 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The investigators will study the prevalence of dissociative identity disorder (DID) in three populations at risk in cases of childhood psychotrauma : patients with a diagnosis of borderline personality, patients with a diagnosis of functional dissociative crises (FDC) and patients with early psychosis.
The investigators will also study the prevalence of other dissociative disorders and the frequency of complex post-traumatic stress disorder.
The investigators will also look for correlations between the type of maltreatment in childhood, the age of onset of trauma and the type of diagnosis of dissociative disorders.
The investigators hope to include 150 borderline patients, 150 FDC patients and 50 early psychosis patients.
Data collection will be done via a psychometric administration of 7 self-completion questionnaires as well as the completion of the SCID-D semi-structured interview.
Study design
- Primary purpose
- Diagnosis
- Allocation
- Non-randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 3
- Model description
- 3 groups : borderline, early psychosis and FDC.
| Arm | Type | Receives |
|---|---|---|
| Borderline | Other | Diagnostic Test: psychometric assessment, Diagnostic Test: semi-structured clinical interviewBorderline patients |
| Functional Dissociative Crises (FDC) | Other | Diagnostic Test: psychometric assessment, Diagnostic Test: semi-structured clinical interviewFDC patients |
| Early psychosis | Other | Diagnostic Test: psychometric assessment, Diagnostic Test: semi-structured clinical interviewEarly psychosis patients : mental state at risk for psychosis and first psychotic episode |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| psychometric assessmentPsychometric testing to assess trauma and dissociative disorders, and in particular dissociative identity disorder. | Diagnostic test | Borderline, Early psychosis, Functional Dissociative Crises (FDC) |
| semi-structured clinical interviewSemi-structured interview for the assessment of dissociative disorders (SCID-D : Semi-structured Clinical Interview for diagnosing DSM-5 and ICD-11 Dissociative Disorders) | Diagnostic test | Borderline, Early psychosis, Functional Dissociative Crises (FDC) |
Primary outcome
SCID-D : Semi-structured Clinical Interview for diagnosing DSM-5 and ICD-11 Dissociative Disorders / DSM = Diagnostic and Statistical Manual of Mental Disorders / ICD = International Classification of Diseases
Time frame: Inclusion visit
assesses the dissociative identity disorder
8 secondary outcomes
SCID-D : Semi-structured Clinical Interview for diagnosing DSM-5 and ICD-11 Dissociative Disorders
Time frame: Inclusion visit
CTQ-28 : Childhood Trauma Questionnaire
Time frame: Inclusion visit
life events inventory DSM-5
Time frame: Inclusion visit
PCL-5 : Posttraumatic stress disorder CheckList-5
Time frame: Inclusion visit
ITQ : International Trauma Questionnaire
Time frame: Inclusion visit
SDQ-20 : Somatoform Dissociative questionnaire
Time frame: Inclusion visit
DIS-Q : Dissociation Questionnaire
Time frame: Inclusion visit
DES : Dissociative Experience Scale
Time frame: Inclusion visit
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 24 Apr 2026.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
Coraline HINGRAY principal investigator
Centre Psychothérapique de Nancy
3 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing psychometric assessment and semi-structured clinical interview in people with Dissociative Disorder, run by Centre Psychothérapique de Nancy at 3 sites in France.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 24 Apr 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 3 sites in France. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Lori PETROCELLI (+33383852377, petrocelli.psy@gmail.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
SCID-D : Semi-structured Clinical Interview for diagnosing DSM-5 and ICD-11 Dissociative Disorders / DSM = Diagnostic and Statistical Manual of Mental Disorders / ICD = International Classification of Diseases (time frame: Inclusion visit). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 24 Apr 2026.