Extended Release Guanfacine in Pediatric Anxiety Disorders: A Pilot, Randomized, Placebo-Controlled Trial.

Retardiertes Guanfacin bei pädiatrischen Angststörungen: Eine randomisierte, placebokontrollierte Pilotstudie.

Guanfacina de Liberação Prolongada em Transtornos de Ansiedade Pediátricos: Um Ensaio Clínico Piloto, Randomizado e Controlado por Placebo.

Clicks: 357
ID: 101619
2017
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Abstract
This is a feasibility study evaluating the safety, tolerability, and potential anxiolytic efficacy of the α agonist guanfacine extended-release (GXR) in children and adolescents with generalized anxiety disorder (GAD), separation anxiety disorder (SAD), or social phobia/social anxiety disorder.Youth aged 6-17 years with a primary diagnosis of GAD, SAD, and/or social anxiety disorder were treated with flexibly dosed GXR (1-6 mg daily, n = 62) or placebo (n = 21) for 12 weeks. The primary aim of this study was to determine the safety and tolerability of GXR in youth with anxiety disorders, which involved the analysis of treatment-emergent adverse events (TEAEs), the emergence of suicidal ideation and behaviors, vital signs, and electrocardiographic/laboratory parameters. Exploratory efficacy measures included dimensional anxiety scales (Pediatric Anxiety Rating Scale [PARS] and Screen for Child Anxiety Related Emotional Disorders [SCARED]), as well as the Clinical Global Impression-Improvement (CGI-I) scale. As this was an exploratory study, no inferential statistical analyses were performed.GXR was safe and well tolerated. Treatment-related mean ± standard deviation changes in heart rate (GXR: 1.8 ± 12 beats per minute [bpm] decrease; placebo: 0.5 ± 11 bpm decrease), systolic blood pressure (GXR: 2.3 ± 11 mm Hg decrease; placebo: 1.7 ± 11 mm Hg decrease), or diastolic blood pressure (GXR: 1.3 ± 9 mm Hg decrease; placebo: 0.9 ± 7 mm Hg increase) were similar between treatment groups. TEAEs, including headache, somnolence/fatigue, abdominal pain, and dizziness, were consistent with the known safety profile of GXR. No differences were observed between treatment groups for PARS and SCARED scores, although at endpoint, a higher proportion of subjects receiving GXR versus placebo demonstrated CGI-I scores ≤2 (54.2% vs. 31.6%), as rated by the clinician investigator.GXR was well tolerated in pediatric subjects with GAD, SAD, and/or social anxiety disorder. ClinicalTrials.gov Identifier: NCT01470469.
Dies ist eine Machbarkeitsstudie zur Bewertung der Sicherheit, Verträglichkeit und potenziellen anxiolytischen Wirksamkeit des α-Agonisten Guanfacin mit veränderter Wirkstofffreisetzung (Guanfacine Extended-Release, GXR) bei Kindern und Jugendlichen mit generalisierter Angststörung (GAD), Trennungsangststörung (SAD) oder sozialer Phobie/sozialer Angststörung. Kinder und Jugendliche im Alter von 6–17 Jahren mit einer Primärdiagnose GAD, SAD und/oder sozialer Angststörung wurden 12 Wochen lang mit flexibel dosiertem GXR (1–6 mg täglich, n = 62) oder Placebo (n = 21) behandelt. Das primäre Ziel dieser Studie war die Bestimmung der Sicherheit und Verträglichkeit von GXR bei Kindern und Jugendlichen mit Angststörungen, was die Erfassung therapiebedingter unerwünschter Ereignisse (Treatment-Emergent Adverse Events, TEAEs), des Auftretens von Suizidgedanken und suizidalem Verhalten, von Vitalparametern sowie elektrokardiografischen und laborchemischen Parametern umfasste. Zu den explorativen Wirksamkeitsmaßen gehörten dimensionale Angstskalen (Pediatric Anxiety Rating Scale [PARS] und Screen for Child Anxiety Related Emotional Disorders [SCARED]) sowie die Skala Clinical Global Impression-Improvement (CGI-I). Da es sich um eine explorative Studie handelte, wurden keine inferenzstatistischen Analysen durchgeführt. GXR war sicher und gut verträglich. Die behandlungsbedingten Veränderungen (Mittelwert ± Standardabweichung) bezüglich der Herzfrequenz (GXR: Abnahme um 1,8 ± 12 Schläge pro Minute [bpm]; Placebo: Abnahme um 0,5 ± 11 bpm), des systolischen Blutdrucks (GXR: Abnahme um 2,3 ± 11 mmHg; Placebo: Abnahme um 1,7 ± 11 mmHg) oder des diastolischen Blutdrucks (GXR: Abnahme um 1,3 ± 9 mmHg; Placebo: Zunahme um 0,9 ± 7 mmHg) waren zwischen den Behandlungsgruppen vergleichbar. Die TEAEs, darunter Kopfschmerzen, Somnolenz/Fatigue, Abdominalschmerzen und Schwindel, entsprachen dem bekannten Sicherheitsprofil von GXR. Bei den PARS- und SCARED-Werten wurden keine Unterschiede zwischen den Behandlungsgruppen beobachtet, wenngleich zum Studienendpunkt ein höherer Anteil der Probanden unter GXR im Vergleich zu Placebo gemäß der Beurteilung durch den klinischen Prüfarzt einen CGI-I-Wert von ≤ 2 aufwies (54,2 % vs. 31,6 %). GXR wurde von pädiatrischen Patienten mit GAD, SAD und/oder sozialer Angststörung gut vertragen. ClinicalTrials.gov-Identifikator: NCT01470469.
Este é um estudo de viabilidade que avaliou a segurança, a tolerabilidade e a potencial eficácia ansiolítica do agonista α guanfacina de liberação prolongada (GXR) em crianças e adolescentes com transtorno de ansiedade generalizada (TAG), transtorno de ansiedade de separação (TAS) ou fobia social/transtorno de ansiedade social. Jovens de 6 a 17 anos com diagnóstico primário de TAG, TAS e/ou transtorno de ansiedade social foram tratados com doses flexíveis de GXR (1–6 mg ao dia, n = 62) ou placebo (n = 21) durante 12 semanas. O objetivo primário deste estudo foi determinar a segurança e a tolerabilidade da GXR em jovens com transtornos de ansiedade, o que envolveu a análise de eventos adversos emergentes do tratamento (EAETs), o surgimento de ideação e comportamentos suicidas, sinais vitais e parâmetros eletrocardiográficos e laboratoriais. As medidas exploratórias de eficácia incluíram escalas dimensionais de ansiedade (Pediatric Anxiety Rating Scale [PARS] e Screen for Child Anxiety Related Emotional Disorders [SCARED]), bem como a escala de Impressão Clínica Global-Melhora (Clinical Global Impression-Improvement [CGI-I]). Por se tratar de um estudo exploratório, não foram realizadas análises estatísticas inferenciais. A GXR foi segura e bem tolerada. As alterações médias ± desvio-padrão relacionadas ao tratamento na frequência cardíaca (GXR: redução de 1,8 ± 12 batimentos por minuto [bpm]; placebo: redução de 0,5 ± 11 bpm), na pressão arterial sistólica (GXR: redução de 2,3 ± 11 mmHg; placebo: redução de 1,7 ± 11 mmHg) ou na pressão arterial diastólica (GXR: redução de 1,3 ± 9 mmHg; placebo: aumento de 0,9 ± 7 mmHg) foram semelhantes entre os grupos de tratamento. Os EAETs, incluindo cefaleia, sonolência/fadiga, dor abdominal e tontura, foram consistentes com o perfil de segurança conhecido da GXR. Não foram observadas diferenças entre os grupos de tratamento quanto aos escores da PARS e da SCARED, embora, ao término do estudo, uma proporção maior de indivíduos recebendo GXR versus placebo tenha apresentado escores da CGI-I ≤ 2 (54,2% vs. 31,6%), conforme avaliado pelo investigador clínico. A GXR foi bem tolerada em pacientes pediátricos com TAG, TAS e/ou transtorno de ansiedade social. Identificador no ClinicalTrials.gov: NCT01470469.
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Authors Strawn, Jeffrey R;Compton, Scott N;Robertson, Brigitte;Albano, Anne Marie;Hamdani, Mohamed;Rynn, Moira A;
Journal journal of child and adolescent psychopharmacology
Year 2017
DOI
10.1089/cap.2016.0132
URL
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