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  • Title: Clinical Assessment of 2 Licensed AbobotulinumtoxinA Injection Volumes for the Treatment of Glabellar Lines.
    Author: Kaufman J, Cohen JL, Peredo MI, Jonas B, Down R, Nogueira A.
    Journal: Dermatol Surg; 2019 Oct; 45(10):1274-1284. PubMed ID: 30893159.
    Abstract:
    BACKGROUND: Two licensed reconstitution volumes may be used to achieve the recommended abobotulinumtoxinA (ABO) dose for glabellar line correction. OBJECTIVE: Comparison of efficacy, safety, and subject satisfaction concerning treatment of moderate to severe glabellar lines with 2 different ABO reconstitution volumes. MATERIALS AND METHODS: Phase IV, prospective, randomized, multicenter, subject- and evaluator-blinded study: 60 subjects received 1 ABO (50 units) treatment, administered as a 1.5- or 2.5-mL reconstitution. Primary objective was Day 30 improvements (≥1-point) in glabellar line severity. Onset of effect, duration, subject satisfaction, and treatment-related adverse events (AEs) were assessed. RESULTS: At Day 30, 90.0% and 86.7% of subjects achieved ≥1-point improvements with 1.5- and 2.5-mL reconstitutions, respectively. Median time to onset of effect was 48 hours after treatment. At 24 hours, 26.7% achieved ≥1-point improvements with the 2.5-mL reconstitution versus 6.7% with the 1.5-mL reconstitution. Maximum response was at Day 14, and >40% maintained efficacy through Day 120 in each group. High subject satisfaction was sustained throughout observation. Most AEs were mild. No serious AEs were reported. CONCLUSION: Both ABO reconstitutions were well tolerated and effective in correcting glabellar lines with no significant differences concerning efficacy or duration of effect. No serious AEs were reported.
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