NCT07698015

Brief Summary

Concussion or mild traumatic brain injury (mTBI) is a major public health concern. Most adolescents will recover from mTBI without complication; however, a sizeable minority experience symptoms that last more than one most post-injury (i.e., persisting symptoms after concussion). Few evidence-based treatments exist for adolescents with persisting symptoms after concussion. Mindfulness-based interventions (MBIs) are effective for treating a wide range of mental and physical health conditions that overlap with post-concussion symptoms. Participants will participate in an 8-week smartphone app-based MBI or a health education program as a control. The study will determine the practicality of doing a larger study to evaluate the effectiveness of the MBI by assessing participants' level of interest, view of intervention helpfulness, and their completion of all the components of the study.

Trial Health

63
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
72

participants targeted

Target at P50-P75 for not_applicable

Timeline
21mo left

Started Sep 2026

Geographic Reach
1 country

1 active site

Status
not yet recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

June 10, 2026

Completed
1 month until next milestone

First Posted

Study publicly available on registry

July 13, 2026

Completed
2 months until next milestone

Study Start

First participant enrolled

September 1, 2026

Expected
1.7 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

May 31, 2028

Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

May 31, 2028

Last Updated

July 13, 2026

Status Verified

June 1, 2026

Enrollment Period

1.7 years

First QC Date

June 10, 2026

Last Update Submit

July 6, 2026

Conditions

Keywords

concussionmild traumatic brain injurymindfulness-based interventiondigital healthpersisting symptoms after concussion

Outcome Measures

Primary Outcomes (4)

  • Eligibility

    % screened that are eligible

    pre-enrollment

  • Recruitment rate

    % eligible participants randomized

    at randomization

  • Treatment Adherence

    % participants who complete 70% of the intervention

    post-intervention questionnaires (Week 8)

  • Retention

    % participants who complete follow-up assessment

    post-intervention questionnaires (Week 8)

Secondary Outcomes (2)

  • Treatment credibility and expectancy

    7-14 days post-enrollment

  • Treatment Satisfaction

    Post-intervention questionnaires (Week 8)

Other Outcomes (12)

  • Pediatric Quality of Life Inventory

    pre-randomization (week 0), mid-intervention (week 4), and post-intervention (week 8)

  • Mild Traumatic Brain Injury Symptom Burden

    pre-randomization (week 0), mid-intervention (week 4), and post-intervention (week 8)

  • Anxiety

    pre-randomization (week 0) and post-intervention (week 8)

  • +9 more other outcomes

Study Arms (2)

Mindfulness-based intervention

EXPERIMENTAL
Behavioral: Mindfulness-based intervention

Health education

ACTIVE COMPARATOR
Behavioral: Health Education

Interventions

The mindfulness-based intervention (MBI) is delivered via a smartphone application called Dawn. The MBI consists of 8-week MBI program developed to meet the needs of adolescents post-concussion/mTBI. The intervention includes audio-recorded psychoeducation and guided mindfulness exercises. The goal of this intervention is to support better coping with symptoms.

Mindfulness-based intervention

The health education program is delivered via a smartphone application called Dawn. It is an 8-week program designed to deliver information about health behaviors (e.g., sleep, exercise, nutrition, social support) that is inline with clinical practice guidelines for adolescents post-concussion/mTBI. The intervention includes audio-recorded psychoeducation and health behavior tracking exercises. The goal of this intervention is to provide a credible, time- and attention-matched control group.

Health education

Eligibility Criteria

Age12 Years - 18 Years
Sexall
Healthy VolunteersNo
Age GroupsChild (0-17), Adult (18-64)

You may qualify if:

  • Age 12-18
  • Structured interview confirming a concussion/mTBI or suspected concussion/mTBI diagnosis according to the American Congress of Rehabilitation Medicine definition
  • Concussion/mTBI occurred 1-12 months prior to randomization
  • Persisting symptoms after concussion as demonstrated by a score \>75th percentile on the Health and Behaviour Inventory compared to orthopedic injury normative group
  • English proficiency

You may not qualify if:

  • Parent- or self-reported psychiatric hospitalization in past year or prior diagnosis of a psychiatric disorders or psychiatric symptoms that may be contraindicated for mindfulness-based interventions (e.g., psychosis)
  • Participation in a clinical trial using the Dawn intervention app in acute concussion (e.g., \<2 weeks post-injury).

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

BC Children's Hospital Research Institute

Vancouver, British Columbia, Canada

Location

MeSH Terms

Conditions

Brain Concussion

Condition Hierarchy (Ancestors)

Brain Injuries, TraumaticBrain InjuriesBrain DiseasesCentral Nervous System DiseasesNervous System DiseasesCraniocerebral TraumaTrauma, Nervous SystemHead Injuries, ClosedWounds and InjuriesWounds, Nonpenetrating

Central Study Contacts

Molly Cairncross, PhD

CONTACT

Nina Andres

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
TRIPLE
Who Masked
PARTICIPANT, INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR INVESTIGATOR
PI Title
Assistant Professor

Study Record Dates

First Submitted

June 10, 2026

First Posted

July 13, 2026

Study Start (Estimated)

September 1, 2026

Primary Completion (Estimated)

May 31, 2028

Study Completion (Estimated)

May 31, 2028

Last Updated

July 13, 2026

Record last verified: 2026-06

Data Sharing

IPD Sharing
Will not share

Locations