A Randomized Placebo-Controlled Trial of Sertraline vs. Placebo in the Treatment of Anxiety in Children and AdoLescents with NeurodevelopMental Disorders: The “CALM” Study

Participate in the CALM study testing a medication called sertraline to see if it reduces anxiety in youth with neurodevelopmental disorders.

You can participate if you are:

  • Children and teens between 8 and 17 years old
  • Diagnosed with autism spectrum disorder (ASD), ADHD, Tic Disorders, or genetic diagnosis of Fragile X, tuberous sclerosis or 22q11 deletions
  • Meet criteria for an anxiety disorder
  • Able to tolerate venipuncture (bloodwork)

Study involves:

  • comparing sertraline against placebo for reducing anxiety symptoms
  • bloodwork
  • smart watch technology
  • questionnaires
  • Anxiety symptoms monitored over time.

Anxiety in children with autism spectrum disorder (ASD), ADHD, Tic Disorders, or genetic diagnosis of Fragile X, tuberous sclerosis or 22q11 deletions

Date posted: June 3, 2026
Sponsor: This study is enrolling at multiple institutions in Canada. To find out more information, please contact the study team

Investigators:

Dr. Evdokia Anagnostou, MD
Pediatric Neurologist, Holland Bloorview

Dr. Francois Bolduc, MD, PhD, FRCPC, Associate Professor Pediatric Neurology; Adjunct Associate Professor Medical Genetics, University of Alberta