iCBT for Adolescents Obsessive-compulsive Dissorder

March 10, 2026 updated by: Hospital Clinic of Barcelona

Taking Psychiatry Online: Developing a Platform to Provide Internet-Delivered Cognitive-Behavior Therapy and Testing It in Pediatric Obsessive-Compulsive Disorder

The goal of the study is to assess the feasibility, acceptability, and potential effects of therapist-guided internet-delivered cognitive-behavior therapy (iCBT) for adolescent obsessive-compulsive disorder, using a recently developed digital platform.

Study Overview

Status

Active, not recruiting

Conditions

Intervention / Treatment

Detailed Description

Although cognitive-behavior therapy (CBT) is a well-established first-line treatment for many mental disorders, very few patients receive it due to the shortage of trained professionals, the costs of face-to-face therapy, and geographic barriers. Therapist-guided internet-delivered CBT (iCBT) is a potential solution to this problem but is not generally available in our context.

The investigators plan to:

  1. Develop a digital platform for the treatment of mental disorders using therapist-guided iCBT;
  2. Assess the feasibility, acceptability, and potential effects of therapist-guided iCBT for adolescent obsessive-compulsive disorder (OCD) using the platform developed in Objective 1.

Study Type

Interventional

Enrollment (Estimated)

25

Phase

  • Not Applicable

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

  • Spain
    • Barcelona
      • Barcelona, Barcelona, Spain, 08036
        • Hospital Clinic

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

  • Child

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Age between 12 and 17
  • Internet access
  • Principal diagnosis of OCD, based on DSM-5
  • Child Yale-Brown Obsessive-Compulsive Scale (CY-BOCS) Total Severity Score > 16
  • Ability to communicate in Spanish
  • For participants taking psychotropic medication for OCD: at least eight weeks on stable medication and willingness to stay on the same medication/doses for the 14 weeks of the study

Exclusion Criteria:

  • Estimated IQ < 70, as per the Vocabulary subtest of the Wechsler Intelligence Scale for Children (WISC)
  • Eight or more previous sessions of CBT for OCD with an experienced therapist during the last 12 months
  • Ongoing psychological treatment for OCD
  • Diagnosis of organic brain disorder, intellectual disability, autism spectrum disorder, psychosis, bipolar disorder, low-weight anorexia nervosa, or alcohol/substance dependence
  • Immediate risk to self or others (e.g., suicidality)
  • Inability to communicate in Spanish
  • Low motivation to participate (i.e., the patient does not believe the therapy will be helpful at all)
  • Insufficient time to work on the treatment (about 60 minutes per day)

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

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Experimental: Interned-delivered Cognitive-Behavioral Therapy (CBT)
Behavioral: Behavioral: icbt.
14-Week Therapist-Based iCBT for pediatric OCD

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Feasibility (recruitment and retention rates and therapist burden)
Time Frame: Baseline and at week 14
The investigators will assess feasibility by recording recruitment rates, retention rates, and therapist burden (time spent by the therapist sending emails, reviewing materials, etc.).
Baseline and at week 14

Other Outcome Measures

Outcome Measure
Measure Description
Time Frame
Acceptability (Treatment Acceptability/Adherence Scale, TAAS)
Time Frame: Baseline and at week 14
The TAAS assesses satisfaction with treatment and adherence.
Baseline and at week 14
Child Yale-Brown Obsessive-Compulsive Scale
Time Frame: Baseline and week 14
The Child Yale-Brown Obsessive-Compulsive Scale (CY-BOCS) evaluates the severity of obsessive-compulsive disorder symptoms in adolescents. It is a clinician-rated, 10-item scale, with each item rated from 0 (no symptoms) to 4 (extreme symptoms), resulting in a total score ranging from 0 to 40. The scale also provides separate subtotals for the severity of obsessions and compulsions.
Baseline and week 14
Clinical Global Impression (CGI)-Severity
Time Frame: Baseline and at week 14
The CGI rates the severity of the patient's illness at the time of assessment on a 7-point scale, from 1 = normal to 7 = among the most extremely ill patients.
Baseline and at week 14
Children's Depression Inventory
Time Frame: Baseline and at week 14
The CDI assesses the severity of depressive symptoms in adolescents (12-16).
Baseline and at week 14
Beck Depression Inventory
Time Frame: Baseline and at week 14
The BDI assesses the severity of depressive symptoms in adolescents (17 years old) and adults.
Baseline and at week 14
Negative Effects Questionnaire (NEQ)
Time Frame: Baseline and at week 14
The NEQ assesses potential negative side effects of the intervention.
Baseline and at week 14
Obsessive-Compulsive Inventory Child Version (OCI-CV)
Time Frame: Baseline and at week 14
The OCI-R assesses obsessive-compulsive symptoms experienced over the past month. It is an 21-item self-report questionnaire covering six symptom dimensions: washing, checking, ordering, obsessing, hoarding, and neutralizing. Each item is rated on a 3-point scale (0 = not at all, 1= sometimes, 2 = always), reflecting the distress caused by the symptom during the past month.
Baseline and at week 14

Collaborators and Investigators

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

Sponsor

Hospital Clinic of Barcelona

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)

March 10, 2026

Primary Completion (Estimated)

January 1, 2027

Study Completion (Estimated)

March 1, 2027

Study Registration Dates

First Submitted

November 14, 2025

First Submitted That Met QC Criteria

March 10, 2026

First Posted (Actual)

March 13, 2026

Study Record Updates

Last Update Posted (Actual)

March 13, 2026

Last Update Submitted That Met QC Criteria

March 10, 2026

Last Verified

March 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • HCB/2023/0284 (Other Identifier: Hospital Clínic of Barcelona)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

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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