Study Stopped
Inability to include additional patients in the arms with depression
Neurophysiological Markers in the Depressive Episode Characterized by Anhedonic Drug Resistance: Evaluation of Motor Skills and P300 Wave
PHYDDOPA
1 other identifier
interventional
36
1 country
2
Brief Summary
Depression is currently the leading cause of disability and suicide death worldwide. Several studies, however, have shown that a significant proportion of patients do not respond to standard antidepressants, especially since their symptomatology is dominated by anhedonia or psychomotor retardation reflecting central dopaminergic dysfunction. In order to improve the efficiency and speed of the antidepressant response, it seems essential to highlight this dopaminergic dysfunction, by defining a P300 wave profile specific to the subtype of depressed patients with anhedonic phenotype to whom personalized treatment targeting dopaminergic transmission could in the future be proposed earlier. The investigators therefore wish to highlight an increase in the latency time of P300 and a modification of motor skills (of the walking cycle and of the movement of the hands), without modification of the dopaminergic transmission measured by PETScan, specific to the sub-type of depressive patients, resistant to at least 2 antidepressants of different classes with an anhedonia score\> 5/14 on the SHAPS scale. The increased latency of P300 could then be used in the future as a predictive biomarker of resistance to conventional antidepressant treatments specific to this population of anhedonic depressed patients
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P25-P50 for not_applicable
Started Aug 2020
Typical duration for not_applicable
2 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
March 16, 2020
CompletedFirst Posted
Study publicly available on registry
July 7, 2020
CompletedStudy Start
First participant enrolled
August 24, 2020
CompletedPrimary Completion
Last participant's last visit for primary outcome
August 10, 2023
CompletedStudy Completion
Last participant's last visit for all outcomes
August 10, 2023
CompletedFebruary 10, 2026
February 1, 2026
3 years
March 16, 2020
February 5, 2026
Conditions
Outcome Measures
Primary Outcomes (1)
Difference between latency of P300 wave during encephalogram
1 hour after inclusion
Secondary Outcomes (8)
Difference in walking speed during an 8 meter-walk test between the group of patients with bipolar drug-resistant depression of the anhedonic type and the other groups of subjects
2 hours after inclusion
Stride length variation during an 8 meter-walk test between the group of patients with bipolar drug-resistant depression of the anhedonic type and the other groups of subjects
2 hours after inclusion
Difference in presynaptic fixation of 18-Fluorodopa during positron emission tomography between the group of patients with drug-resistant bipolar depression of the anhedonic type and the other groups of patients
4 hours after inclusion
Difference in the apathy assessment score performed by the Starkstein Apathy Scale (SAS) between the group of patients with drug-resistant bipolar depression of the anhedonic type and the other groups of subjects
30 minutes after inclusion
Difference in frequency of melancholic characteristics meeting the criteria of DSM-5 between the group of patients with drug-resistant bipolar depression of the anhedonic type and the other groups of subjects
30 minutes after inclusion
- +3 more secondary outcomes
Study Arms (4)
Healthy volunteers
ACTIVE COMPARATORHealthy volunteers at least 18 years old and without a history of psychiatric or neurological disorders
Anhedonic drug-resistant bipolar depression patient
EXPERIMENTALAdult patients at least 18 years old with drug-resistant bipolar depression of the anhedonic type
Non-anhedonic drug-resistant bipolar depression Pat
ACTIVE COMPARATORAdult patients at least 18 years old with drug-resistant bipolar depression of the non-anhedonic type
Mild to moderate Parkinson's disease patient
ACTIVE COMPARATORAdult patients at least 18 years of age with mild to moderate Parkinson's disease
Interventions
Electroencephalogram will be done for P300 wave assessment
Starkstein Apathy Scale, DSM-5 criteria, Montgomery-Åsberg Depression Rating Scale, Perseverative Thinking Questionnaire, classification of Hoehn \& Yahr
Position emission tomography will be done for
8-Meter walking test will be done for gait parameter assessment
Eligibility Criteria
You may qualify if:
- Healthy volunteers:
- Person who is ≥ 18 years old and ≤ 70 years old
- Subject without neurological history
- Subject without psychiatric history in the semi-structured interview Mini International Neuropsychiatric Interview (MINI).
- Subject having read and understood the newsletter and signed the consent form
- Subject affiliated to a social security scheme.
- Subject capable of understanding spoken and written French.
- Woman of reproductive age with effective contraception as defined by the WHO, for at least three months or postmenopausal.
- Patients with drug-resistant bipolar anhedonic depression:
- Patient whose age is ≥ 18 years and ≤ 70 years.
- Patient with depression meeting DSM-5 criteria (Appendix 4) evolving in the context of bipolar disorder.
- Patient with a resistance level greater than or equal to 1 according to the Pacchiarotti classification.
- Patient with an SHAPS anhedonia score greater than 5/14.
- Patient with no other psychiatric pathology in the semi-structured interview Mini International Neuropsychiatric Interview (MINI).
- Patient having a normal neurological examination.
- +26 more criteria
You may not qualify if:
- Healthy volunteers:
- Person with a psychiatric disorder in the semi-structured interview Mini International Neuropsychiatric Interview (MINI) (Annex 9).
- Person deprived of their liberty by an administrative or judicial decision or person placed under the protection of justice / sub-tutorship or curatorship.
- Subjects with poor understanding of spoken or written French
- Existence of a neurological, rheumatological, orthopedic or psychiatric history, presence of a severe progressive pathology which can modify brain activity or gait parameters.
- Woman of childbearing age not taking effective contraception according to the WHO definition (estrogen-progestogens or intrauterine device or tubal ligation), pregnant (positive urine pregnancy test) or breastfeeding.
- Taking unauthorized treatment during the study and:
- Dependence on a substance other than nicotine.
- Patients with drug-resistant bipolar anhedonic depression:
- Patient with depression with psychotic characteristics.
- Patient deprived of liberty by an administrative or judicial decision or person placed under the protection of justice / sub-tutorship or curatorship.
- Subjects with poor understanding of spoken or written French
- Patient with SHAPS anhedonia score less than or equal to 5/14 (Annex 2).
- Patient with a neurological, rheumatological, orthopedic or psychiatric history, presence of a severe progressive pathology which can modify brain activity or gait parameters.
- Woman of childbearing age not taking effective contraception according to the WHO definition (estrogen-progestogens or intrauterine device or tubal ligation), pregnant (positive urine pregnancy test) or breastfeeding.
- +23 more criteria
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (2)
Rouen University Hospital
Rouen, France
CHSR du Rouvray
Saint-Étienne-du-Rouvray, France
Study Officials
- PRINCIPAL INVESTIGATOR
Marie-Laure WELTER, Pr
University Hospital, Rouen
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- NON RANDOMIZED
- Masking
- NONE
- Purpose
- OTHER
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
March 16, 2020
First Posted
July 7, 2020
Study Start
August 24, 2020
Primary Completion
August 10, 2023
Study Completion
August 10, 2023
Last Updated
February 10, 2026
Record last verified: 2026-02
Data Sharing
- IPD Sharing
- Will not share