The purpose of this study is to find out how the brain of people with autism is affected by Propranolol. Propranolol is not FDA approved for the treatment of autism. Propranolol is FDA approved for the treatment of heart conditions such as blood pressure This research is being done because there are currently no drug treatment options for language impairments and social difficulties often experienced by people with autism.
The specific aim of this study is to examine the effects of serial doses of propranolol on social interaction, and secondarily on language tasks, anxiety, adaptive behaviors, and global function in high functioning adults and adolescents with autism in a double-blinded, placebo-controlled trial. The investigators will also examine whether response to treatment can be predicted based upon markers of autonomic functioning, such as skin conductance, heart rate variability (HRV), and the pupillary light reflex (PLR), and whether anxiety can predict treatment response. The hypothesis is that social functioning and language abilities will benefit from serial doses of propranolol, and that those with the greatest degree of autonomic dysregulation, or the lowest functional connectivity, will demonstrate the greatest benefit from the drug.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
TRIPLE
Enrollment
69
Propanolol will be given on a titration schedule in which participants will begin with small doses (single capsules) of the drug and increase to a larger dosage (divided over 3 capsules) over the course of three weeks. Participants aged 15-24 years will undergo an MRI.
Placebo will be given in the form preferred by the participant and on the same schedule as the propanolol regime. Participants aged 15-24 years will undergo an MRI.
An MRI will be performed on participants aged 15-24 years.
Thompson Center for Autism & Neurodevelopmental Disorders
Columbia, Missouri, United States
Change in General Social Outcomes Measure (GSOM) Assessment
Time frame: Day 1, 6 weeks, 12 weeks
Change in Social Responsiveness Scale (SRS-2)
Time frame: Day 1, 6 weeks, 12 weeks
Change in score on Anagrams test
For those aged 15-24 only
Time frame: Day 1, 6 weeks, 12 weeks
Change in Semantic fluency test results
For those aged 15-24 only
Time frame: Day 1, 6 weeks, 12 weeks
Change Clinical Global Impression surveys
Time frame: Day 1, 6 weeks, 12 weeks
Change in Autism Impact Measure (AIM)
Time frame: Day 1, 6 weeks, 12 weeks
Change in Clinical Evaluation of Language Fundamentals (CELF-5) assessment
Time frame: Day 1, 6 weeks, 12 weeks
Change in Vineland Adaptive Behavior Scales (VABS-2) assessment
Time frame: Day 1, 6 weeks, 12 weeks
Change in score on Aberrant Behavior Checklist (ABC)
Time frame: Day 1, 6 weeks, 12 weeks
Change in gastrointestinal symptomology
Rome IV Diagnostic Questionnaire on Pediatric Functional Gastrointestinal Disorders (R4PDQ-child) and Rome IV Diagnostic Questionnaire (R4DQA) for adults
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Time frame: Day 1, 1 week, 2 weeks, 6 weeks, 12 weeks