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JOURNAL ARTICLE
MULTICENTER STUDY
RANDOMIZED CONTROLLED TRIAL
RESEARCH SUPPORT, NON-U.S. GOV'T
Ecopipam, a D1 receptor antagonist, for treatment of tourette syndrome in children: A randomized, placebo-controlled crossover study.
BACKGROUND: Dopamine D2 receptor antagonists used to treat Tourette syndrome may have inadequate responses or intolerable side effects. We present results of a 4-week randomized, double-blind, placebo-controlled crossover study evaluating the safety, tolerability, and efficacy of the D1 receptor antagonist ecopipam in children and adolescents with Tourette syndrome.
METHODS: Forty youth aged 7 to 17 years with Tourette syndrome and a Yale Global Tic Severity Scale - total tic score of ≥20 were enrolled and randomized to either ecopipam (50 mg/day for weight of <34 kg, 100 mg/day for weight of >34 kg) or placebo for 30 days, followed by a 2-week washout and then crossed to the alternative treatment for 30 days. Stimulants and tic-suppressing medications were excluded. The primary outcome measure was the total tic score. Secondary outcomes included obsessive compulsive and attention deficit/hyperactivity disorder scales.
RESULTS: Relative to changes in placebo, reduction in total tic score was greater for ecopipam at 16 days (mean difference, -3.7; 95% CI, -6.5 to -0.9; P = 0.011) and 30 days (mean difference, -3.2; 95% CI, -6.1 to -0.3; P = 0.033). There were no weight gain, drug-induced dyskinesias, or changes in laboratory tests, electrocardiograms, vital signs, or comorbid symptoms. Dropout rate was 5% (2 of 40). Adverse events reported for both treatments were rated predominantly mild to moderate, with only 5 rated severe (2 for ecopipam and 3 for placebo).
CONCLUSIONS: Ecopipam reduced tics and was well tolerated. This placebo-controlled study of ecopipam supports further clinical trials in children and adolescents with Tourette syndrome. © 2018 International Parkinson and Movement Disorder Society.
METHODS: Forty youth aged 7 to 17 years with Tourette syndrome and a Yale Global Tic Severity Scale - total tic score of ≥20 were enrolled and randomized to either ecopipam (50 mg/day for weight of <34 kg, 100 mg/day for weight of >34 kg) or placebo for 30 days, followed by a 2-week washout and then crossed to the alternative treatment for 30 days. Stimulants and tic-suppressing medications were excluded. The primary outcome measure was the total tic score. Secondary outcomes included obsessive compulsive and attention deficit/hyperactivity disorder scales.
RESULTS: Relative to changes in placebo, reduction in total tic score was greater for ecopipam at 16 days (mean difference, -3.7; 95% CI, -6.5 to -0.9; P = 0.011) and 30 days (mean difference, -3.2; 95% CI, -6.1 to -0.3; P = 0.033). There were no weight gain, drug-induced dyskinesias, or changes in laboratory tests, electrocardiograms, vital signs, or comorbid symptoms. Dropout rate was 5% (2 of 40). Adverse events reported for both treatments were rated predominantly mild to moderate, with only 5 rated severe (2 for ecopipam and 3 for placebo).
CONCLUSIONS: Ecopipam reduced tics and was well tolerated. This placebo-controlled study of ecopipam supports further clinical trials in children and adolescents with Tourette syndrome. © 2018 International Parkinson and Movement Disorder Society.
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