Self-guided Treatment for Adolescents Navigating Depression

Not Applicable

Completed

Conditions: Depressive Episode
Depressive Symptoms
Depressive Disorder
Depression

Interventions: Device: Active Intervention

Registration Number: NCT05462652

Lead Sponsor: Limbix Health, Inc.

Brief Summary: The goal of this study is to test whether an investigational mobile app can be a helpful treatment option for adolescents with symptoms of depression. Adolescents aged 13 to 21 with depression symptoms can be part of this study if eligible.

Eligible participants will be randomly assigned to one of two groups: one group will receive the mobile app intervention in addition to their usual care and the other group will simply continue their usual care for symptoms of depression. Both groups will have 5 weeks to use a study app, and will complete assessments during the intervention period, at post-intervention, and at one month follow-up.

Detailed Description: The primary aim of the proposed research is to evaluate the effectiveness of a self-guided, cognitive behavioral therapy (CBT)-based mobile app + assessment-enhanced Usual Care (eUC) compared to eUC alone as an intervention for adolescents with symptoms of depression who are under the supervision of a licensed healthcare provider.

The sample size for this study is 220 subjects. Sample size calculation is based on primary outcome patient health questionnaire (PHQ-8) at post-intervention (5 weeks). Six PHQ-8 measurements will be collected from each subject (baseline and weekly during the 5-week intervention period). Using a two-sample t-test approach, assuming a two-tailed alpha set at 0.05, a total of 200 participants (100 in each study arm) will give us 80% power to detect a moderate effect size of at least d=0.4. Given an anticipated 10% rate of attrition, we aim to enroll 220 total participants in the study.

A 50% female sample will be targeted. Earlier recruitment efforts within the study demographic have resulted in majority female samples, consistent with prevalence rates within the study population. As such, recruitment efforts will be undertaken to ensure representation of male participants. Recruitment efforts will be taken to ensure adequate representation of underrepresented racial and ethnic minority groups.

Children between the ages of 13-17 will be included in this research as the program to be evaluated is specifically designed as an intervention for adolescents with symptoms of depression. Assent will be obtained from all children under 18 for study enrollment unless legally emancipated or financially independent in accordance with CA state regulations and regulations of the state in which the minor resides.

Study staff will monitor participants' symptom deterioration and questionnaire data for safety.

Recruitment & Eligibility

Status: COMPLETED

Sex: All

Target Recruitment: 223

Inclusion Criteria

13-21 years of age
PHQ-8 score ≥ 5 at eligibility screening
English fluency and literacy (participant and legal guardian, if applicable)
Access to a compatible smartphone (or other device) and operating system (i.e., capable of installing the app from the Google Play or Apple App Store; list will be provided on study website) and regular internet access
Participant willing and able to provide informed consent/assent and have legal guardian willing and able to provide informed consent (if required)
Under the care of a United States (U.S.)-based licensed healthcare provider and willing to provide contact information for the provider and sign a HIPAA release that allows Limbix to contact provider
Willing and able to provide information required for study enrollment (e.g. all responses to initial PHQ-8 assessment, and current antidepressant medication status)
Located in the continental U.S., Hawaii, or Alaska, and not planning to leave the U.S. during the study period (through 1-month follow up assessments, up to 11 weeks after eligibility screening)

Exclusion Criteria

Diagnosis of (or treatment for) bipolar disorder, post traumatic stress disorder, psychotic disorder, substance use disorder, or eating disorder within the 12 months prior to eligibility screening
Change in psychotropic medication (initiation or change in dose) within the 30 days prior to eligibility screening
Plans to initiate or change treatment (e.g., psychotherapy, psychotropic medication, and/or other psychosocial treatment) for a mental health disorder during the study intervention period (5 weeks) as determined at eligibility screening
Suicide attempt within the past year
Active suicide ideation with intent
Previous participation in user testing or clinical testing of Spark or SparkRx, or other previous use of SparkRx app
Participation in any other clinical research involving a mental health intervention or treatment within 60 days prior to eligibility screening
Plans to participate in any other clinical research involving a mental health intervention or treatment during the study intervention period (5 weeks) as determined at eligibility screening
Any condition, comorbidity, or event that, in the opinion of the investigator, will prevent the participant from adhering to the protocol or benefitting from the intervention or will prevent investigators from being able to ensure safety
Having a sibling who is a past or current participant in the study

Study & Design

Study Type: INTERVENTIONAL

Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Active Intervention	Active Intervention	The active intervention is a 5-week program divided into 5 levels intended to be completed weekly. Each level is expected to take about 60 minutes to complete. Activities in each level may include reading text on the screen, answering multiple choice style questions, swiping or clicking a button to move through screens, dragging and dropping elements on screen, and completing tasks outside of the app. Certain on-demand resources can be accessed in the apps at any time, including crisis resources. Where appropriate, text entries in the app that match a database of concerning words/phrases will trigger an automated pop-up suggesting participants visit the in-app crisis resources if they need additional support. Text entries will also be monitored by study staff for safety, though not in real-time. Participants will be instructed to complete a weekly PHQ-8 assessment in the mobile app.

Primary Outcome Measures

Name	Time	Method
Depressive Symptom Severity at Post-intervention	Post-intervention (5 week timepoint)	Measured by the Patient Health Questionnaire (PHQ-8), an 8-item participant-report measure for screening for depression and for establishing depression severity. The total score ranges from 0-24, with a higher score indicating greater depression symptom severity.

Secondary Outcome Measures

Name	Time	Method
Clinically-meaningful Reduction in Severity at Post-intervention	Change from baseline to post-intervention (5 weeks)	Measured by the Patient Health Questionnaire (PHQ-8) an 8-item participant-report measure for screening for depression and for establishing depression severity. The total score ranges from 0-24, with a higher score indicating greater depression symptom severity. Clinically-meaningful reduction is defined as a ≥5 point reduction in PHQ-8 score from baseline.
Intervention Response at Post-intervention	Change from baseline to post-intervention (5 weeks)	Measured by the Patient Health Questionnaire (PHQ-8) an 8-item participant-report measure for screening for depression and for establishing depression severity. The total score ranges from 0-24, with a higher score indicating greater depression symptom severity. Intervention response is defined as a 50% reduction in PHQ-8 score from baseline.
Remission at Post-intervention	Post-intervention (5 week timepoint)	Measured by the Patient Health Questionnaire (PHQ-8) an 8-item participant-report measure for screening for depression and for establishing depression severity. The total score ranges from 0-24, with a higher score indicating greater depression symptom severity. Remission is defined as a PHQ-8 score less than 5 at post-intervention.