Safety of Converting From Tetrabenazine to Deutetrabenazine for the Treatment of Chorea.
JAMA Neurol
; 74(8): 977-982, 2017 08 01.
Article
en En
| MEDLINE
| ID: mdl-28692723
ABSTRACT
Importance Tetrabenazine is efficacious for chorea control; however, tolerability concerns exist. Deutetrabenazine, a novel molecule that reduces chorea, was well tolerated in a double-blind, placebo-controlled study. Objectives:
To evaluate the safety and explore the efficacy of conversion from tetrabenazine to deutetrabenazine in patients with chorea associated with Huntington disease (HD). Design, Setting, andParticipants:
In this ongoing, open-label, single-arm study that started on December 21, 2013, 37 patients at 13 Huntington Study Group sites in the United States and Australia who were taking stable doses of tetrabenazine that provided a therapeutic benefit were switched overnight to deutetrabenazine therapy. After week 1, the deutetrabenazine dose was titrated on a weekly basis for optimal chorea control.Interventions:
Deutetrabenazine administration at a dosage thought to provide comparable systemic exposure to the active metabolites of the prior, stable tetrabenazine regimen. Main Outcomes andMeasures:
Safety measures included adverse events (AEs), clinical laboratory tests, vital signs, electrocardiograms, and validated scales. Changes in the Unified Huntington's Disease Rating Scale total maximal chorea score and total motor score were efficacy end points.Results:
Of the 53 patients with HD screened for the study, 37 ambulatory patients with manifest HD (mean [SD] age, 52.4 [11.5] years; 22 [59%] male and 15 [41%] female; 36 white [97.3%]) were enrolled. Deutetrabenazine was generally well tolerated, with low rates of neuropsychiatric AEs. Safety scales did not reveal subclinical toxicity with deutetrabenazine treatment. Rates of dose reduction or suspension attributable to AEs were also low. Chorea control, as measured by the total maximal chorea score, was maintained at week 1 and significantly improved at week 8 (mean [SD] change from baseline, 2.1 [3.2]; P < .001). Conclusions and Relevance In patients with chorea, overnight conversion to deutetrabenazine therapy provided a favorable safety profile and effectively maintained chorea control.
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Tetrabenazina
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Corea
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Inhibidores de Captación Adrenérgica
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Sustitución de Medicamentos
Tipo de estudio:
Clinical_trials
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Observational_studies
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Prognostic_studies
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Risk_factors_studies
Límite:
Female
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Humans
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Male
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Middle aged
País/Región como asunto:
America do norte
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Oceania
Idioma:
En
Año:
2017
Tipo del documento:
Article