Onabotulinum Toxin Type A and Abobotulinum Toxin Type A Crow's Feet Rhytid Study
Public ClinicalTrials.gov record NCT01529788. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
A Double Blinded Randomized Controlled Trial to Compare the Efficacy, Time to Onset, and Duration of Two Botulinum Type A Exotoxins (Onabotulinum Toxin A and Abobotulinum Toxin A) in the Treatment of "Crow's Feet."
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
The objective of the study is to compare the time to onset of Dysport® versus Botox® in the treatment of lateral orbital rhytids ("crow's feet"). Thirty subjects were enrolled in the study; specifically 30 male or female patients 18 years or older with moderate to severe lateral orbital rhytids at maximum contracture. Each patient were randomized to be treated with Dysport® on one side and Botox® on the other side. Both the injector and patient were blinded to the injected toxin. The efficacy endpoints were determined by investigator and subject live assessment of "crow's feet" at rest and maximum contraction at each visit (every other day for 6 days post-injection, every month for 9 months following) using a validated 5 point photographic scale(no wrinkles \[0\], very fine wrinkles \[1\], fine wrinkles \[2\], moderate wrinkles \[3\] or severe wrinkles \[4\]) used in previous studies. A written description of each photograph was included to help standardize the application of the Photographic Scale.
Study identification
- NCT ID
- NCT01529788
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 4
- Enrollment
- 90 participants
Conditions and interventions
Conditions
Interventions
- Right lateral orbital injection of Botox Cosmetic or Dysport Drug
- Left lateral orbital injection of Botox Cosmetic or Dysport Drug
Drug
Eligibility (public fields only)
- Age range
- 18 Years and older
- Sex
- All
- Healthy volunteers
- Accepts healthy volunteers
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Aug 31, 2009
- Primary completion
- Aug 31, 2012
- Completion
- Aug 31, 2014
- Last update posted
- Sep 29, 2014
2009 – 2014
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| The Maas Clinic | San Francisco | California | 94115 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT01529788, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Sep 29, 2014 · Synced Sep 5, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT01529788 live on ClinicalTrials.gov.