BOTOX for the Treatment of Platysma Prominence
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The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. |
ClinicalTrials.gov Identifier: NCT03915067 |
Recruitment Status :
Completed
First Posted : April 16, 2019
Last Update Posted : April 14, 2021
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Condition or disease | Intervention/treatment | Phase |
---|---|---|
Platysma Prominence | Drug: BOTOX High Dose Drug: BOTOX Low Dose Drug: Placebo | Phase 2 |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 171 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor) |
Primary Purpose: | Treatment |
Official Title: | A Phase 2 Multicenter, Randomized, Double-Blind, Placebo-Controlled, Dose-Ranging Study to Evaluate the Safety and Efficacy of BOTOX® (Botulinum Toxin Type A) Purified Neurotoxin Complex for the Treatment of Platysma Prominence |
Actual Study Start Date : | April 23, 2019 |
Actual Primary Completion Date : | April 16, 2020 |
Actual Study Completion Date : | April 16, 2020 |
Arm | Intervention/treatment |
---|---|
Active Comparator: BOTOX High Dose
BOTOX High Dose will be injected into the platysma muscle on Day 1.
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Drug: BOTOX High Dose
BOTOX will be injected into the platysma muscle |
Active Comparator: BOTOX Low Dose
BOTOX Low Dose will be injected into the platysma muscle on Day 1.
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Drug: BOTOX Low Dose
BOTOX will be injected into the platysma muscle |
Placebo Comparator: Placebo
Placebo will be injected into the platysma muscle on Day 1.
|
Drug: Placebo
Placebo will be injected into the platysma muscle |
- Achievement of improvement as rated by investigator using the clinician platysma scale [ Time Frame: 14 Days ]The investigator evaluates the participant's Platysma Prominence severity using a 5-grade scale where 1 = minimal and 5 = extreme
- To evaluate the safety of BOTOX compared with placebo in participants with moderate to severe platysma prominence based on incidence of adverse events [ Time Frame: 4 Months ]Number of Patients who experienced one or more Treatment Emergent Adverse Event (TEAE)
- To evaluate the safety of BOTOX compared with placebo in participants with moderate to severe platysma prominence based on change from baseline in pulse rate [ Time Frame: 4 Months ]Participants with a clinically relevant change from baseline in pulse rate
- To evaluate the safety of BOTOX compared with placebo in participants with moderate to severe platysma prominence based on change from baseline in systolic and diastolic blood pressure (BP) [ Time Frame: 4 Months ]Participants with a clinically relevant change from baseline in systolic and diastolic BP
- To evaluate the safety of BOTOX compared with placebo in participants with moderate to severe platysma prominence based on change from baseline in respiration rate [ Time Frame: 4 Months ]Participants with a clinically relevant change from baseline in respiration rate
- Achievement of improvement as rated by participant using the participant platysma scale [ Time Frame: 14 Days ]The participant evaluates their own Platysma Prominence severity using a 5-grade scale where 1 = minimal and 5 = extreme

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Female participants willing to minimize the risk of inducing pregnancy for the duration of the clinical study and follow-up period
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A female participant is eligible to participate if she is not pregnant (has a negative urine pregnancy result prior to randomization), not breastfeeding, and at least one of the following conditions applies:
- Not a woman of childbearing potential (WOCBP) OR
- A WOCBP who agrees to follow the studies contraceptive guidance during the treatment and follow-up period through study exit.
- Capable of giving signed informed consent, which includes compliance with the requirements and restrictions listed in the ICF and in this study's protocol
Exclusion Criteria:
- Any medical condition that may put the participant at increased medical risk with exposure to BOTOX, including diagnosed myasthenia gravis, Eaton-Lambert syndrome, amyotrophic lateral sclerosis, or any other condition that might interfere with neuromuscular function
- Participant has an anticipated need for treatment with botulinum toxin of any serotype for any indication during the study (other than study intervention)
- Anticipated need for surgery or overnight hospitalization during the study
- Current enrollment in an investigational drug or device study or participation in such a study within 30 days of entry into this study
- Females who are pregnant, nursing, or planning a pregnancy during the study
- Known immunization or hypersensitivity to any botulinum toxin serotype
- History of alcohol or drug abuse within 12 months of the study
- Participant has tattoos, jewelry, or clothing that cannot be removed, and that obscure the neck

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03915067
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Dallas Plastic Surgery Institute | |
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Canada, British Columbia | |
Dr. Shannon Humphrey Inc. | |
Vancouver, British Columbia, Canada, V5Z 4E1 | |
Pacific Derm | |
Vancouver, British Columbia, Canada, V6H 4E1 | |
Canada, Ontario | |
Dermetics | |
Burlington, Ontario, Canada, L7N 3N2 | |
Sweat Clinics of Canada | |
Toronto, Ontario, Canada, M5R 3N8 | |
Bertucci MedSpa | |
Woodbridge, Ontario, Canada, L4L 8E2 |
Study Director: | Warren Tong | Allergan |
Responsible Party: | Allergan |
ClinicalTrials.gov Identifier: | NCT03915067 |
Other Study ID Numbers: |
1936-201-008 |
First Posted: | April 16, 2019 Key Record Dates |
Last Update Posted: | April 14, 2021 |
Last Verified: | April 2021 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | Yes |
Plan Description: | Allergan will share de-identified patient-level data and study-level data including protocols and clinical study reports for phase 2 - 4 trials completed after 2008 that are registered to ClinicalTrials.gov or EudraCT, have received regulatory approval in the United States and/or the European Union in a given indication, and the primary manuscript from the trial has been published. To request access to the data, the researcher must sign a data use agreement and any shared data is to be used for non-commercial purposes. More information can be found on http://www.allerganclinicaltrials.com/. |
Supporting Materials: |
Study Protocol Clinical Study Report (CSR) |
Time Frame: | After having received regulatory approval in the United States and/or the European Union in a given indication and the primary manuscript from the trial has been published. |
Access Criteria: | To request access to the data, the researcher must sign a data use agreement and any shared data is to be used for non-commercial purposes. |
URL: | http://www.allerganclinicaltrials.com/ |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
Botulinum Toxins, Type A abobotulinumtoxinA Neuromuscular Agents Peripheral Nervous System Agents Physiological Effects of Drugs |
Acetylcholine Release Inhibitors Membrane Transport Modulators Molecular Mechanisms of Pharmacological Action Cholinergic Agents Neurotransmitter Agents |