Cognitive Markers of Response to Treatment in Resistant Depression (DEP-ICOR)

June 15, 2026 updated by: Centre Hospitalier Universitaire de Nice

Patients with depression are frequently treatment resistant. Clinical manifestations of depression are various, but cognitive dysfunctions are commonly present. Many factors are involved in treatment resistance. As no biological marker is available, clinical markers could be considered in predicting response to antidepressive treatment.

The aim of this study is to investigate the relation between the cognitive changes and the remission of depressive symptoms in patients with recurrent depression (Stage 2 of Thase and Rush classification).

To explore the dynamics of cognitive dimension associated to clinical and functional remission, the investigators will observe neurocognitive functioning before and after introducing a new antidepressive therapy.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Observational

Enrollment (Actual)

30

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • France
      • Nice, France, 06000
        • Hôpital Pasteur

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

40 years to 70 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

Patients with a major depressive episode diagnosis

Description

Inclusion Criteria:

  • Patients will be aged from 40 to 70, with a major depressive episode diagnosis with a 2 stage degree of resistance.

Exclusion Criteria:

  • Patients with major depressive episode during more of 12 months
  • Alzheimer dementia or related disease (CIM 10)
  • Score Hamilton Depression Rating Scale (HDRS) < 18

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Clinic assessments: Score BDI - II
Time Frame: Change from the baseline score BDI-II at 12 months after introducing the new therapy
The investigators will conduct clinical assessments. A baseline will be drawn in the acute phase (V1) before modifying the antidepressive therapy; 2 weeks after treatment change, patient will be clinically assessed by his psychiatrist. A complete assessment will be done 6 months and 12 months after introducing the new therapy.
Change from the baseline score BDI-II at 12 months after introducing the new therapy
Functional assessments : Score Sheehan Disability Scale (SDS)
Time Frame: Change from the baseline Score Sheehan Disability Scale (SDS) at 12 months after introducing the new therapy
The investigators will conduct functional assessments. A baseline will be drawn in the acute phase (V1) before modifying the antidepressive therapy; 2 weeks after treatment change, patient will be functional assessed by his psychiatrist. A complete assessment will be done 6 months and 12 months after introducing the new therapy.
Change from the baseline Score Sheehan Disability Scale (SDS) at 12 months after introducing the new therapy
Neuropsychologic assessments: M.M.S.E. (Mini Mental Score Evaluation)
Time Frame: Change from the baseline Score M.M.S.E. (Mini Mental Score Evaluation) at 12 months after introducing the new therapy
The investigators will conduct neuropsychologic assessments. A baseline will be drawn in the acute phase (V1) before modifying the antidepressive therapy; A complete assessment will be done 6 months and 12 months after introducing the new therapy.
Change from the baseline Score M.M.S.E. (Mini Mental Score Evaluation) at 12 months after introducing the new therapy

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Centre Hospitalier Universitaire de Nice

Investigators

  • Principal Investigator: Nelly Darmon, CHU of Nice

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

January 4, 2015

Primary Completion (Actual)

May 20, 2019

Study Completion (Actual)

May 20, 2020

Study Registration Dates

First Submitted

May 3, 2016

First Submitted That Met QC Criteria

May 13, 2016

First Posted (Estimated)

May 17, 2016

Study Record Updates

Last Update Posted (Actual)

June 17, 2026

Last Update Submitted That Met QC Criteria

June 15, 2026

Last Verified

June 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 14-AOI-07

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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