Journal
DERMATOLOGIC SURGERY
Volume 39, Issue 6, Pages 891-899Publisher
WILEY-BLACKWELL
DOI: 10.1111/dsu.12160
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Background A prospective, randomized, double-blind, multicenter, Phase III trial of incobotulinumtoxinA using new Food and Drug Administration endpoints. Objective To investigate the efficacy and safety of a single dose of incobotulinumtoxinA for the treatment of glabellar frown lines. Materials and Methods Two hundred seventy-one subjects with moderate to severe glabellar frown lines at maximum frownas assessed by an investigator according to the facial wrinkle scale (FWS)were randomized 2:1 to receive one treatment of 20U of incobotulinumtoxinA or placebo, respectively, and assessed over 120days. The primary efficacy variable was a composite endpoint consisting of patients who were 2-point or more responders at maximum frown on Day 30 according to the investigator's rating on the FWS, and 2-point or more responders at maximum frown on Day 30 according to the patient's assessment on a 4-point scale. Safety analyses were performed throughout the study. Results IncobotulinumtoxinA was statistically significantly more efficacious than placebo using a new rigorous composite endpoint (p<.0001). Conclusion A single dose of 20U of incobotulinumtoxinA is superior to placebo in the treatment of glabellar frown lines at Day 30 and is well-tolerated.
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