Clinical trial Recruiting at 1 site Observational Ages 6 to 17

Identifying genetic factors in children affected by antidepressant side effects

Official title: Pharmacogenetics of Antidepressant-Induced Disinhibition in Children Study

Run by University of Calgary · NCT03953014 · Data updated 2026-11-12

This study is trying to find out if certain genes can help predict which children might have negative side effects from antidepressants, so doctors can better manage their treatment.

Quick facts

Study typeObservational
Ages6 Years to 17 Years
SexAll
Enrollment120 (estimated)
SponsorUniversity of Calgary
Academic / other
Locations1 site (Calgary, Alberta)
StatusRecruiting
StartedJanuary 2, 2019
Main results expectedSeptember 30, 2026
Study endsDecember 30, 2026
Registry record updatedMay 14, 2026
Trial IDNCT03953014 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are children aged 6 to 17 with a diagnosis of major depressive disorder, anxiety disorders, or obsessive-compulsive disorder who have a history of SSRI therapy.

Probably not a fit

Patients with attention deficit hyperactivity disorder, oppositional defiant disorder, conduct disorder, bipolar disorder, psychotic disorder, or pervasive developmental disorder may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This observational study aims to identify pharmacogenetic profiles linked to behavioral disinhibition caused by selective serotonin reuptake inhibitors (SSRIs) in children diagnosed with major depressive disorder, anxiety disorders, or obsessive-compulsive disorder. By analyzing medical records and genetic samples from 120 children aged 6 to 17 who have undergone SSRI treatment, the study seeks to determine if there are distinct genetic markers that predict adverse behavioral reactions. The goal is to develop clinical tools that can help healthcare providers anticipate and mitigate these side effects, ultimately improving treatment outcomes for affected children.

Why it matters

Potential benefit: If successful, this study could lead to personalized treatment strategies that minimize adverse reactions to SSRIs in children.

How similar studies have gone: While the approach of identifying pharmacogenetic profiles is gaining traction, this specific study is novel in its focus on SSRI-induced behavioral disinhibition in children.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Aged 6 - 24 years
2. Medical records available
3. Diagnosis of MDD, anxiety disorder, or OCD
4. Current or past history of SSRI therapy

Exclusion Criteria:

1. Inability of parent/legal guardian to give informed consent
2. Inability of the child to give informed assent
3. Unwillingness of child to provide saliva sample for genetic analysis
4. Current, past or suspected diagnosis of attention deficit hyperactivity disorder, oppositional defiant disorder, conduct disorder, bipolar disorder, psychotic disorder, or pervasive developmental disorder.

Where it's running

  • Child and Adolescent Addiction, Mental Health & Psychiatry
    Calgary, Alberta, Canada
    Recruiting

Study contacts

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.