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Using Computer Tasks to Predict Response to Antidepressants

NCT02800577 · Status: COMPLETED · Phase: PHASE1 · Type: INTERVENTIONAL · Enrollment: 80

Last updated 2016-06-15

No results posted yet for this study

Summary

In England over 800,000 patients each year are either newly diagnosed with depression or present with a new episode of depression in primary care. The majority of patients do not respond to the first drug prescribed and have to try several different antidepressants before an effective treatment is found. Antidepressants have a slow clinical onset of action, taking 4 to 6 weeks before changes in mood become apparent. No test exists to guide General Practitioners (GPs) as to whether their patient is responding to the prescribed successive treatments. This often results in delays of many months before patients return to good mental health. The GP-ETB is a set of computer-based emotional processing tasks. It was developed and optimised to be sensitive to early changes in emotional bias that are indicative of successful antidepressant treatment. The current investigation is an exploratory study using the GP-ETB.

It will test the predictive ability of the GP-ETB with regard to later subjective drug response and nonresponse. The study will recruit depressed patients from primary care settings. There are no study drugs prescribed as part of this clinical investigation. Eligible patients will have been prescribed citalopram by their GP prior to study entry. The decision to initiate treatment with citalopram will be independent of study participation. The duration of the study is 5 months. Each patient will be required to attend 3 visits and total duration of the study for the patient will be 46 weeks. During the visits patients will be asked to complete a variety of questionnaires and GP-ETB tasks on the computer. Sensitivity and specificity data collected during this study will be used to develop a computer algorithm intended to predict response at 46 weeks, based on GP-ETB data collected 1 week after initiation of antidepressant treatment.

Conditions

Interventions

DEVICE

General Practitioner Emotional Test Battery (GP-ETB)

The GP-ETB (Class I Medical Device) comprises three computer tasks. In the first task, the 'Emotional Categorisation Task' patients are given forty words that might be used to describe them and indicate whether they would 'like' or 'dislike' to be described by a particular word. In the 'Facial Expression Recognition Task' patients are asked to judge whether a briefly displayed face is expressing one of six emotions. In the final task, the 'Emotional Recall Task', the patient should recall as many words as they can from the series of words that were presented in the first task. The patients perform these tasks once before antidepressant treatment and again seven days after treatment begins.

Sponsors & Collaborators

  • P1vital Products Limited

    lead INDUSTRY

Principal Investigators

  • Mike Browning, MRCPsych · P1vital Limited

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Max Age
65 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2014-06-30
Primary Completion
2015-01-31
Completion
2015-03-31

Countries

  • United Kingdom

Study Locations

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Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT02800577 on ClinicalTrials.gov