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Obesity, MorbidPhase 2NCT01859013

Topiramate in Adolescents With Severe Obesity

A Phase 2 study testing Topiramate in people with Obesity, Morbid and Obesity, run by University of Minnesota at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The prevalence of severe pediatric obesity is on the rise and youth with this condition are at elevated risk for developing chronic diseases such as cardiovascular disease (CVD) and type 2 diabetes mellitus (T2DM). Read more about this study

Who is it for?
Ages 12 to 17 years
Conditions the study is for
Obesity, Morbid, Obesity, Weight Loss
What is being tested?
Topiramate
Type of treatment
Pill or oral medicine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
34 participants
Where
1 siteUnited States
Study dates
Jun 2013to Apr 2017
Phase
Phase 2
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 12 to 17 years
  • All sexes
  • No healthy volunteers
  • Child

Who may be able to join

  • BMI ≥1.2 times the 95th percentile (based on gender and age) or BMI ≥35 kg/m2
  • 12-18 years old
  • Tanner stage IV or V by physical exam

Who cannot join

  • Tanner stage I, II, or III
  • Type 1 or 2 diabetes mellitus
  • Previous (within 6-months) or current use of weight loss medication (patients may undergo washout)
  • Previous (within 6-months) or current use of drugs associated with weight gain (e.g. steroids/anti-psychotics)
  • Previous bariatric surgery
  • Recent initiation (within 3-months) of anti-hypertensive or lipid medication
Show all 21Show fewer
  • Previous (within 6-months) or current use of medication to treat insulin resistance or hyperglycemia (patients may undergo washout)
  • Major psychiatric disorder
  • Females: Pregnant, planning to become pregnant, or unwilling to use 2 or more acceptable methods of contraception when engaging in sexual activity throughout the study
  • Tobacco use
  • Liver/renal dysfunction
  • ALT or AST >2.5 times the upper limit of normal
  • Bicarbonate <18 mmol/L
  • Creatinine >1.2 mg/dL
  • Glaucoma
  • Obesity associated with genetic disorder (monogenetic obesity)
  • Hyperthyroidism or uncontrolled hypothyroidism
  • History of suicidal thought/attempts
  • History of kidney stones
  • History of cholelithiasis
  • Current use of other carbonic anhydrase inhibitor

Trial locations and contacts

1 site in 1 country.

United States1 site
  • University of Minnesota

    Minneapolis, Minnesota, 55455

Other trials in United States

About this study

Official title: BMI Reduction With Meal Replacements + Topiramate in Adolescents With Severe Obesity

The prevalence of severe pediatric obesity is on the rise and youth with this condition are at elevated risk for developing chronic diseases such as cardiovascular disease (CVD) and type 2 diabetes mellitus (T2DM). Topiramate, a medication approved by the Food and Drug Administration (FDA) for the treatment of seizures in adults and children, is associated with weight loss. Although not FDA approved for the treatment of obesity, studies in obese adults have demonstrated weight reduction of approximately 5% with 6-12 months of therapy. However, the weight loss effect of topiramate has never been evaluated among children and adolescents. Therefore, the goal of this pilot study is to evaluate the safety and efficacy of 24 weeks of topiramate therapy with a 4-week run-in of meal replacement therapy in adolescents with severe obesity. The primary hypothesis is that 4 weeks of meal replacement therapy followed by 24 weeks of topiramate will have a larger average percent decline in BMI between baseline and 28 weeks compared to meal replacement therapy followed by placebo.

Read the detailed description

The prevalence of severe pediatric obesity is on the rise and youth with this condition are at elevated risk for developing chronic diseases such as cardiovascular disease (CVD) and type 2 diabetes mellitus (T2DM). Lifestyle modification therapy alone is ineffective for most adolescents with severe obesity and few patients qualify for bariatric surgery. Many patients would likely benefit from pharmacotherapy but only one medication (orlistat) is approved for use in adolescents but notable side effects and limited efficacy impede its clinical use. Topiramate, a medication approved by the Food and Drug Administration (FDA) for the treatment of seizures in adults and children, is associated with weight loss. Although not FDA approved for the treatment of obesity, studies in obese adults have demonstrated weight reduction of approximately 5% with 6-12 months of therapy. However, the weight loss effect of topiramate has never been evaluated among children and adolescents. Therefore, the goal of this pilot study is to evaluate the safety and efficacy of 24 weeks of topiramate therapy with a 4-week run-in of meal replacement therapy in adolescents with severe obesity.

This will be a 28-week, randomized, double-blind, placebo-controlled, pilot clinical trial of meal replacement therapy (4 weeks) followed by topiramate (24 weeks) vs. meal replacement therapy (4 weeks) followed by placebo (24 weeks) for BMI reduction and cardiometabolic risk factor improvement in 36 adolescents (ages 12-17 years old) with severe obesity. Monthly lifestyle modification/behavioral counseling will be delivered by trained study coordinators to patients in both groups. The lifestyle modification education materials will be given to patients and selected sections will be discussed at each monthly contact (five face-to-face sessions and three phone sessions).

Being tested
Topiramate, Placebo
Medical subject headings
Obesity, Morbid, Obesity, Weight Loss

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • TopiramateDrug

    Also called Topamax

    Topiramate will be initiated at a dose of 25 mg (taken orally once daily in the evening), escalated to 50 mg (taken orally once daily in the evening) after 1 week, and escalated to 75 mg (taken orally 25 mg in the morning and 50 mg in the evening) after 2 weeks. Patients who do not tolerate dose escalation will be reduced to the highest tolerated dose for the remainder of the trial.

  • PlaceboOther

    Also called Sugar Pill

    Placebo will be taken orally once daily in the evening for the first two weeks, and orally twice daily (AM and PM) for the remainder of the study.

Study groups in NCT01859013
Study groupRoleWhat they receive
TopiramateExperimentalFour (4) weeks of meal replacement therapy, followed by 28-weeks of topiramate therapy. Topiramate will be initiated at a dose of 25 mg (taken orally once daily in the evening), escalated to 50 mg (taken orally once daily in the evening) after 1 week, and escalated to 75 mg (taken orally 25 mg in the morning and 50 mg in the evening) after 2 weeks.
Receives: Drug: Topiramate
Sugar PillPlacebo comparatorFour (4) weeks of meal replacement therapy, followed by 28-weeks of placebo (sugar pill) therapy.
Receives: Other: Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Percent Change From Baseline in Body Mass Index at 28-Weeks

    The Percent Change from Baseline in Body Mass Index at 28-Weeks

    Measured: Baseline and 28-Weeks

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted21 May 2013 (estimated)
  2. Study startJun 2013
  3. Primary completionDec 2015
  4. Study completionApr 2017

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
34 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01859013
Sponsor's protocol ID
1304M31241
Status last verified
Jun 2017
First submitted
9 May 2013
Last updated
2 Jul 2017
Data monitoring committee
Yes

Publications

  • Fox CK, Kaizer AM, Rudser KD, Nathan BM, Gross AC, Sunni M, Jennifer Abuzzahab M, Schwartz BL, Kumar S, Petryk A, Billington CJ, Ryder JR, Kelly AS. Meal replacements followed by topiramate for the treatment of adolescent severe obesity: A pilot randomized controlled trial. Obesity (Silver Spring). 2016 Dec;24(12):2553-2561. doi: 10.1002/oby.21633. Epub 2016 Nov 3.

    PubMed 27807925

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Topiramate in people with Obesity, Morbid and Obesity, run by University of Minnesota at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 21 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 2 Jul 2017. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 2 Jul 2017). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Percent Change From Baseline in Body Mass Index at 28-Weeks (time frame: Baseline and 28-Weeks). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT01859013, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 2 Jul 2017.

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