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Journal Article
Randomized Controlled Trial
A Two-Stage Injection Technique and Dose-Ranging Study Using High-Dose AbobotulinumtoxinA for Treating Platysmal Bands.
Journal of Drugs in Dermatology : JDD 2024 January 2
BACKGROUND: AbobotulinumtoxinA (aboBoNT-A) is useful for the treatment of platysmal banding. This study evaluated the efficacy and safety of a standardized 2-staged injection technique using high doses of AboBoNT-A for treating platysmal banding.
METHODS: This was a randomized, double-blinded, dose-ranging prospective study. Subjects included adults with moderate-to-severe platysmal bands (grade 3 or 4 on the validated 5-point photographic scale), who received either 120 U (Cohort 1) or 180 U (Cohort 2) of aboBoNT-A, followed by an optional 90 U touch-up. The relatively higher on-label concentration of aboBoNT-A was used (1.5 mL/300 units) to reduce the volume injected and the risk of spread to adjacent muscles. Subjects were followed for 5 months, with safety and efficacy endpoints evaluated by the Investigator Live Assessment (ILA) and Subject Live Assessment (SLA).
RESULTS: Twenty women were included in the analysis. Cohort 1 and Cohort 2 had 100% and 90% responder rates (achieved grade 1 or 2) during maximal contraction at month 1 with ILA. Cohort 2 had more subjects with 2 or greater grade improvement at maximal contraction using both ILA and SLA. Cohort 2 also had longer time to loss of grade 1 or 2 at maximal contraction compared with Cohort 1. No major adverse reactions occurred, but 3 subjects experienced transient positional neck weakness.
CONCLUSION: We demonstrate a standardized 2-stage injection technique using aboBoNT-A for effectively treating moderate-to-severe platysmal banding. We used relatively higher doses while maintaining a good safety profile by using the more concentrated on-label volume of reconstitution for aboBoNT-A and by including a touch-up. J Drugs Dermatol. 2024;23(1):1311-1318. doi:10.36849/JDD.7537.
METHODS: This was a randomized, double-blinded, dose-ranging prospective study. Subjects included adults with moderate-to-severe platysmal bands (grade 3 or 4 on the validated 5-point photographic scale), who received either 120 U (Cohort 1) or 180 U (Cohort 2) of aboBoNT-A, followed by an optional 90 U touch-up. The relatively higher on-label concentration of aboBoNT-A was used (1.5 mL/300 units) to reduce the volume injected and the risk of spread to adjacent muscles. Subjects were followed for 5 months, with safety and efficacy endpoints evaluated by the Investigator Live Assessment (ILA) and Subject Live Assessment (SLA).
RESULTS: Twenty women were included in the analysis. Cohort 1 and Cohort 2 had 100% and 90% responder rates (achieved grade 1 or 2) during maximal contraction at month 1 with ILA. Cohort 2 had more subjects with 2 or greater grade improvement at maximal contraction using both ILA and SLA. Cohort 2 also had longer time to loss of grade 1 or 2 at maximal contraction compared with Cohort 1. No major adverse reactions occurred, but 3 subjects experienced transient positional neck weakness.
CONCLUSION: We demonstrate a standardized 2-stage injection technique using aboBoNT-A for effectively treating moderate-to-severe platysmal banding. We used relatively higher doses while maintaining a good safety profile by using the more concentrated on-label volume of reconstitution for aboBoNT-A and by including a touch-up. J Drugs Dermatol. 2024;23(1):1311-1318. doi:10.36849/JDD.7537.
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