At a glance
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SMART Use of Medication for the Treatment of Adolescent Severe Obesity
In Brief
A Phase 2 clinical trial evaluating Lifestyle Modification Therapy (LSMT), Phentermine Pill, and 2 other interventions for Adolescent Obesity. Completed, enrolled 150 participants across 1 site.
Detailed Summary
This study will examine the timing and sequence of using adjunct obesity pharmacotherapy for adolescents with severe obesity who do not respond to lifestyle modification therapy alone.
Study Details
Timeline
Interventions
LSMT will consist of both in-person and by telephone sessions delivered throughout the 48-week intervention phase. Each session will last 30-60 minutes. A trained study coordinator (a registered dietician or someone trained by our registered dietician) will deliver therapy which consists of counseling using education, goal setting and barrier reduction. Participants will be randomized to receive LSMT for 12 or 24 weeks before a re-assessment of their BMI.
Phentermine will be started only if a participant does not lose 5% of BMI after 12 or 24 weeks of LSMT. Subjects will take 15 mg of phentermine every morning for 12 weeks at which time there will be an assessment of weight loss. Subjects who achieve 5% or more BMI reduction after 12 weeks of phentermine will continue 15 mg every morning for the remainder of the study (through week 48) along with their LSMT.
Participants who do no not achieve at least 5% BMI reduction after 12 weeks of phentermine+LSMT will be re-randomized 1:1 to either topiramate+phentermine+LSMT or topiramate+placebo+LSMT. Topiramate dosing will begin at 50 mg every morning for the first 7 days, and then increase to 100 mg every morning through week 48. At the end of week 48 the taper off will be 50 mg every morning for 7 days and then discontinue.
Participants who do no not achieve at least 5% BMI reduction after 12 weeks of phentermine+LSMT will be re-randomized 1:1 to either topiramate+phentermine+LSMT or topiramate+placebo+LSMT. Participants will take a placebo pill every morning.