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NCT Number: NCT05520398

Neural Mechanisms of Obsessive-compulsive Disorder (OCD) Treatment Failure

The aim of this study is to understand why patients with obsessive-compulsive disorder (OCD) fail in therapy.

To understand the neural mechanisms involved in exposure therapy that support success and clinical improvement in order to improve therapy outcomes for OCD patients.

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Key information

Age range

18 year–55 year

Sex eligibility

All sexes

Study type

Observational

Primary location

About this study

A course of therapy is recommended for individuals with obsessive-compulsive disorder (OCD). It is usually a type of cognitive behavioural therapy (CBT) with exposure and response prevention (ERP).

In this study the investigators assess patients pre-therapy and post-therapy evaluating symptom severity (measured by the Y-BOCS) and decision-making (measured by online questionnaires and computer-based behavioural tasks).

To examine how decisions are formed in patients undergoing OCD CBT, how behaviour changes after a non-pharmacological therapy module and how it is associated to the alleviation of OCD symptoms.

The study, which will recruit 90 patients, is based at University College London - Wellcome Centre for Human Neuroimaging. This study is a part of the Cognitive and Neural Networks in Psychiatry (CNNP) study.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Diagnosis of obsessive-compulsive disorder (OCD)
  • Fluent in written and spoken English
  • Normal/corrected to normal vision
  • Expecting to start OCD therapy

Exclusion criteria

  • Autism spectrum disorder, psychosis, schizophrenia, addiction, substance abuse, bipolar, hoarding, or Tourette disorder
  • Hearing conditions: tinnitus, ear inflammation, hearing sensitivity, hearing loss, requires hearing aids
  • Colour blindness
  • Severe learning disabilities

Treatment and study plan

Primary outcomes

  1. Yale-Brown obsessive compulsive scale (Y-BOCS)

    Time frame: 3 - 9 months

    The Y-BOCS is a 10-item scale used to assess symptom severity in OCD.

  2. Decision making and learning tasks

    Time frame: 3 - 9 months

    Computer-based behavioural task developed by the investigators to understand decision making in OCD.

Secondary outcomes

  1. Patient EX/RP Adherence Scale (PEAS)

    Time frame: 3 - 9 months

    Self-report assessment for patient's therapy adherence.

  2. Short form of Obsessive Beliefs Questionnaire (OBQ)

    Time frame: 3 - 9 months

    Self-report assessment for obsessive beliefs.

  3. Brief Experiential Avoidance Questionnaire (BEAQ)

    Time frame: 3 - 9 months

    Self-report assessment for experiential avoidance.

  4. International Cognitive Ability Resource (ICAR16)

    Time frame: 3 - 9 months

    Measure to assess cognitive ability.

  5. Worry Domains Questionnaire - Short Form (WDQ-SF)

    Time frame: 3 - 9 months

    Self-report assessment for worry.

  6. The World Health Organization Quality of Life Brief Version (WHOQOL-BREF)

    Time frame: 3 - 9 months

    Self-report assessment for quality of life assessment.

  7. Sheehan Disability Scale (SDS)

    Time frame: 3 - 9 months

    Self-report assessment for functional impairment.

  8. State-Trait Anxiety Inventory (STAI)

    Time frame: 3 - 9 months

    Measure of trait and state anxiety

  9. Zung Self-Rating Depression Scale (SDS)

    Time frame: 3 - 9 months

    Self-report measure of depressive symptomatology.

  10. Anxiety Sensitivity Index (ASI-3)

    Time frame: 3 - 9 months

    Self-report measure for anxiety sensitivity symptomatology.

Study contacts

Contact information is provided by the study sponsor or research team.

Tricia Seow, PhD

CONTACT

[email protected]

+44-(0)203-1087538

Sponsors and collaborators

Lead sponsor

University College, London

Other

Registry information

Official study title

Cognitive and Neural Networks in Psychiatry (CNNP): Neural Mechanisms of Obsessive-compulsive Disorder (OCD) Treatment Failure (ERP in Silico)

Acronym: ERP in Silico

Important dates

Study start
2021
Primary completion
2025
Study completion
2025
First posted
Aug 29, 2022
Registry last updated
Dec 19, 2024

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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