A Study to Assess Adverse Events and Change in Disease Activity of Intramuscular AGN-151586 Injection in Toxin-Naïve Adult Participants With Glabellar Lines

A Phase 3 Multicenter Study to Evaluate the Safety and Efficacy of AGN-151586 for the Treatment of Glabellar Lines in Toxin-Naïve Subjects

Facial lines that develop from repeated facial expression, such as glabellar lines (GL), are typically treated by selectively weakening specific muscles with small quantities of botulinum toxin. AGN-151586 is an investigational product being developed for the treatment of GL. The purpose of this study is to evaluate the safety and efficacy of AGN-151586 for the treatment of GL in toxin-naïve participants with moderate to severe GL.

This is a 12 week study in which eligible subjects will be enrolled into the study containing 2 treatment periods, double-blind period and open-label period. Participants are randomly assigned to receive AGN-151586 or placebo. There is 1 in a 4 chance that participants will receive placebo. Around 300 adult participants with moderate to severe GL will be enrolled in the study in approximately 15 sites.

Participants will receive either AGN-151586 or Placebo administered as 5 intramuscular injections to the glabellar complex on Day 1. Participants meeting retreatment criteria may receive an open-label treatment of AGN-151586 during the study.

Participants will attend regular visits during the study at a study site. The effect of the treatment will be checked by medical assessments, blood tests, telephone calls, questionnaires and checking for side effects.

Study Overview

• Status: Completed
• Conditions: Glabellar Lines
• Intervention / Treatment: Drug: AGN-151586; Drug: Placebo

• Study Type: Interventional
• Enrollment (Actual): 309
• Phase: Phase 3

Contacts and Locations

Study Locations

• Canada
  • British Columbia
    • Vancouver, British Columbia, Canada, V5Z 1H2
      • YVR Aesthetics Training & Study Centre /ID# 241858
    • Vancouver, British Columbia, Canada, V6H 4E1
      • Pacific Derm /ID# 239654
  • Ontario
    • Cobourg, Ontario, Canada, K9A 0Z4
      • Dr Melinda Gooderham Medicine Profession /ID# 239657
    • Oakville, Ontario, Canada, L6J 7W5
      • The Centre for Clinical Trials /ID# 245873
  • Quebec
    • Laval, Quebec, Canada, H7N 6L2
      • Clinique D /ID# 239653
• United States
  • Arizona
    • Scottsdale, Arizona, United States, 85255-4134
      • Clear Dermatology & Aesthetics Center /ID# 238990
  • California
    • Newport Beach, California, United States, 92663
      • Steve Yoelin MD Medical Associate Inc /ID# 243197
    • Redondo Beach, California, United States, 90277
      • Marcus Medical Spa /ID# 241703
  • Connecticut
    • Westport, Connecticut, United States, 06880
      • DMR Research PLLC /ID# 239061
  • Georgia
    • Atlanta, Georgia, United States, 30328
      • Duplicate_Kavali Plastic Surgery and Skin Renewal Center /ID# 244808
  • Louisiana
    • Baton Rouge, Louisiana, United States, 70809
      • DelRicht Research /ID# 244890
  • Maryland
    • Hunt Valley, Maryland, United States, 21030-3216
      • Maryland Dermatology Laser, Skin, & Vein Institute /ID# 239067
  • North Carolina
    • Wilmington, North Carolina, United States, 28405
      • WDC Cosmetic and Research, PLLC /ID# 233935
  • South Carolina
    • Charleston, South Carolina, United States, 29407
      • Clinical Research Center of the Carolinas /ID# 239064
  • Texas
    • Pflugerville, Texas, United States, 78660
      • Duplicate_Austin Institute for Clinical Research /ID# 238989
  • Utah
    • West Valley City, Utah, United States, 84120-2058
      • Kalo Clinical Research /ID# 247279
  • Virginia
    • Arlington, Virginia, United States, 22209
      • SkinDC /ID# 238988

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

• Participants must be able to accurately assess their facial lines without the use of eyeglasses (contact lens use is acceptable).
• Participant must have moderate or severe Glabellar Lines at maximum frown as assessed by both the investigator and participant using the Facial Wrinkle Scale (FWS) at Screening and Baseline Day 1 visit.

Exclusion Criteria:

• Uncontrolled systemic disease.
• Participants must not have a history of any use of botulinum neurotoxin of any serotype for any indication (including any investigational botulinum neurotoxin product).

• Presence or history of any medical condition that may place the participant at increased risk following exposure to AGN-151586 or interfere with the study evaluation, including:

  • Diagnosed myasthenia gravis, Lambert-Eaton syndrome, amyotrophic lateral sclerosis, or any other significant disease that might interfere with neuromuscular function
  • History of facial nerve palsy
  • Infection or dermatological condition at the treatment injection sites
  • Marked facial asymmetry, dermatochalasis, deep dermal scarring, excessively thick sebaceous skin, excessively photodamaged skin, or the inability to substantially lessen facial lines even by physically spreading them apart
  • Any eyebrow or eyelid ptosis at screening or Baseline Day 1 visit as determined by the investigator
• History of known immunization to any botulinum neurotoxin serotype.
• Tattoos, jewelry, or clothing which obscure the glabellar area and cannot be removed.
• Anticipated need for surgery or overnight hospitalization during the study.
• History of surgical procedures on forehead and/or periorbital areas or affecting these areas including any lifting procedure (e.g., rhinoplasty, facial lift, suture lift, thread lift, brow lift, eyelid and/or eyebrow surgery).
• History of periorbital, mid-facial, or upper-facial treatment with semi permanent or permanent soft tissue fillers (e.g., poly-L-lactic acid, polyalkylimide, polymethylmethacrylate, polytetrafluoroethylene, and silicone), synthetic implantation and/or autologous fat transplantation.
• Known active severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection.
• Female subject who is pregnant or breastfeeding, and is considering becoming pregnant or donating eggs during the study or for approximately 30 days after the last dose of study drug or until the end of study, whichever is longer.
• Participant who has been treated with any investigational drug within 30 days of the drug prior to the first dose of study drug or is currently enrolled in another clinical study or was previously enrolled in this study.
• Anticipated need for treatment with botulinum neurotoxin of any serotype for any reason during the study (other than study drug).

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Double

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: AGN-151586; Participants will receive 5 intramuscular injections of AGN-151586 in the glabellar complex on Day 1. Based on meeting the retreatment criteria, the participant may also receive 1 open-label treatment of AGN-151586.	Drug: AGN-151586; Intramuscular Injection
Experimental: Placebo; Participants will receive 5 intramuscular injections of Placebo in the glabellar complex on Day 1. Based on meeting the retreatment criteria, the participant may also receive 1 open-label treatment of AGN-151586.	Drug: AGN-151586; Intramuscular Injection; Drug: Placebo; Intramuscular Injection

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Percentage of Participants With a Grade 0 or 1 and a ≥ 2-grade Improvement From Baseline on the FWS According to Both Investigator and Subject Assessments of Glabellar Lines (GL) Severity at Maximum Frown at Day 7 [US FDA]	[Primary endpoint for the United States FDA] Percentage of participants achieving a Grade 0 or 1 (none or mild) and a ≥ 2-grade improvement from Baseline on the Facial Wrinkle Scale (FWS) according to both investigator and participant assessments of glabellar lines (GL) severity at maximum frown at Day 7 are reported. Assessments were performed using the 4-grade Facial Wrinkle Scale (FWS), where 0=none, 1=mild, 2=moderate, and 3=severe. Higher scores indicate more severity. Percentages are rounded off to nearest single decimal.	Baseline, Day 7 (Double-blind period)
Percentage of Participants With a ≥ 2-grade Improvement From Baseline on the FWS According to Participant Assessment of Glabellar Lines (GL) Severity at Maximum Frown at Day 7 [European Union Regulatory Agencies]	[Primary endpoint for European Union regulatory agencies] Percentage of participants with a ≥ 2-grade improvement from Baseline on the Facial Wrinkle Scale (FWS) according to participant assessment of glabellar lines (GL) severity at maximum frown at Day 7 are reported. Assessments were performed using the 4-grade Facial Wrinkle Scale (FWS), where 0=none, 1=mild, 2=moderate, and 3=severe. Higher scores indicate more severity. Percentages are rounded off to nearest single decimal.	Baseline, Day 7 (Double-blind period)
Percentage of Participants With a ≥ 2-grade Improvement From Baseline on the FWS According to Investigator Assessment of Glabellar Lines (GL) Severity at Maximum Frown at Day 7 [European Union Regulatory Agencies]	[Primary endpoint for European Union regulatory agencies] Percentage of participants with a ≥ 2-grade improvement from Baseline on the Facial Wrinkle Scale (FWS) according to investigator assessment of glabellar lines (GL) severity at maximum frown at Day 7 are reported. Assessments were performed using the 4-grade Facial Wrinkle Scale (FWS), where 0=none, 1=mild, 2=moderate, and 3=severe. Higher scores indicate more severity. Percentages are rounded off to nearest single decimal.	Baseline, Day 7 (Double-blind Period)
Number of Participants With Adverse Events	An adverse event (AE) is defined as any untoward medical occurrence in a participant or clinical investigation participant administered a pharmaceutical product which does not necessarily have a causal relationship with the treatment. The investigator assesses the relationship of each event to the use of study drug.	From time of informed consent to end of study; median time on follow-up was 85 days for all groups.

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Percentage of Participants With a Grade 0 or 1 and a ≥ 2-grade Improvement From Baseline on the FWS According to Both Investigator and Participant Assessments of Glabellar Lines (GL) Severity at Maximum Frown Over Time [US FDA]	[Secondary endpoint for the United States FDA] Percentage of participants achieving a Grade 0 or 1 (none or mild) and a ≥ 2-grade improvement from Baseline on the Facial Wrinkle Scale (FWS) according to both investigator and participant assessments of glabellar lines (GL) severity at maximum frown over time are reported. Assessments were performed using the 4-grade Facial Wrinkle Scale (FWS), where 0=none, 1=mild, 2=moderate, and 3=severe. Higher scores indicate more severity. Percentages are rounded off to nearest single decimal.	Baseline, Hours 8, 12, 24, 36, and 48, Days 7, 14, 21, 28, 35, and 43 (Double-blind Period)
Percentage of Participants With a Grade 0 or 1 and a ≥ 2-grade Improvement From Baseline on the FWS According to Investigator Assessment of Glabellar Lines (GL) Severity at Maximum Frown Over Time [US FDA]	[Secondary endpoint for the United States FDA] Percentage of participants with a Grade 0 or 1 (none or mild) and at least a 2-grade improvement from Baseline on the Facial Wrinkle Scale (FWS) according to investigator assessment of glabellar lines (GL) severity at maximum frown over time are reported. Assessments were performed using the 4-grade Facial Wrinkle Scale (FWS), where 0=none, 1=mild, 2=moderate, and 3=severe. Higher scores indicate more severity. Percentages are rounded off to nearest single decimal.	Baseline, Hours 8, 12, 24, 36, and 48, Days 7, 14, 21, 28, 35, and 43 (Double-blind Period)
Percentage of Participants With Achievement of Mostly Satisfied or Very Satisfied on the Facial Lines Satisfaction Questionnaire (FLSQ) Follow-up Version Item 5 (Overall Satisfaction) for GL at Day 7 [US FDA]	[Secondary endpoint for the United States FDA] The FLSQ is a validated measure that assesses treatment expectations, treatment satisfaction, and psychosocial impact of GL from the participant perspective. Participants assessed their overall satisfaction with their glabellar lines using a 5-point verbal descriptor scale (VDS): very dissatisfied, mostly dissatisfied, neither dissatisfied nor satisfied, mostly satisfied, and very satisfied. The percentage of participants mostly satisfied or very satisfied is reported. Percentages are rounded off to nearest single decimal.	Day 7 (Double-blind Period)
Percentage of Participants With Achievement of Mostly Satisfied or Very Satisfied on the Facial Lines Satisfaction Questionnaire (FLSQ) Follow-up Version Item 5 (Overall Satisfaction) for GL at Hour 24 [United States FDA]	[Secondary endpoint for the United States FDA] The FLSQ is a validated measure that assesses treatment expectations, treatment satisfaction, and psychosocial impact of GL from the participant perspective. Participants assessed their overall satisfaction with their glabellar lines using a 5-point verbal descriptor scale (VDS): very dissatisfied, mostly dissatisfied, neither dissatisfied nor satisfied, mostly satisfied, and very satisfied. The percentage of participants mostly satisfied or very satisfied is reported. Percentages are rounded off to nearest single decimal.	Hour 24 (Double-blind Period)
Percentage of Participants With Achievement of Mostly Satisfied or Very Satisfied on the Facial Lines Satisfaction Questionnaire (FLSQ) Follow-up Version Item 4 (Natural Look) for GL at Day 7 [US FDA]	[Secondary endpoint for the United States FDA] The FLSQ is a validated measure that assesses treatment expectations, treatment satisfaction, and psychosocial impact of GL from the participant perspective. Participants assessed their satisfaction with natural look using a 5-point verbal descriptor scale (VDS): very dissatisfied, mostly dissatisfied, neither dissatisfied nor satisfied, mostly satisfied, and very satisfied. The percentage of participants mostly satisfied or very satisfied is reported. Percentages are rounded off to nearest single decimal.	Day 7 (Double-blind Period)
Percentage of Participants With a ≥ 20-point Improvement From Baseline in FLO-11 Total Scores for GL at Day 7 [European Union Regulatory Agencies]	[Secondary endpoint for European Union regulatory agencies] The Facial Lines Outcomes (FLO-11) Questionnaire is an 11-item validated measure that assesses appearance-related psychological impacts of glabellar lines (GL) from the participant's perspective. Items 1-10 are assessed on an 11-point numeric rating scale that ranges from 0 (Not at all) to 10 (Very much), with higher scores indicating negative impact. Item 11 is scored in the reverse direction. Percentages are rounded off to nearest single decimal.	Baseline, Day 7 (Double-blind Period)
Percentage of Participants With a ≥ 2-grade Improvement From Baseline on the FWS According to Participant Assessment of GL Severity at Maximum Frown at Hour 24 [European Union Regulatory Agencies]	[Secondary endpoint for European Union regulatory agencies] Percentage of participants with a ≥ 2-grade improvement from Baseline on the Facial Wrinkle Scale (FWS) according to participant assessment of glabellar lines (GL) severity at maximum frown at Hour 24 are reported. Assessments were performed using the 4-grade Facial Wrinkle Scale (FWS), where 0=none, 1=mild, 2=moderate, and 3=severe. Higher scores indicate more severity. Percentages are rounded off to nearest single decimal.	Baseline, Hour 24 (Double-blind Period)
Percentage of Participants With a ≥ 1-grade Improvement From Baseline on FWS According to Participant Assessment of GL Severity at Maximum Frown at Hour 24 [European Union Regulatory Agencies]	[Secondary endpoint for European Union regulatory agencies] Percentage of participants with a ≥ 1-grade improvement from Baseline on the Facial Wrinkle Scale (FWS) according to participant assessment of glabellar lines (GL) severity at maximum frown at Hour 24 are reported. Assessments were performed using the 4-grade Facial Wrinkle Scale (FWS), where 0=none, 1=mild, 2=moderate, and 3=severe. Higher scores indicate more severity. Percentages are rounded off to nearest single decimal.	Baseline, Hour 24 (Double-blind Period)
Percentage of Participants With a ≥ 1-grade Improvement From Baseline on FWS According to Investigator Assessment of GL Severity at Maximum Frown at Hour 24 [European Union Regulatory Agencies]	[Secondary endpoint for European Union regulatory agencies] Percentage of participants with a ≥ 1-grade improvement from Baseline on the Facial Wrinkle Scale (FWS) according to investigator assessment of glabellar lines (GL) severity at maximum frown at Hour 24 are reported. Assessments were performed using the 4-grade Facial Wrinkle Scale (FWS), where 0=none, 1=mild, 2=moderate, and 3=severe. Higher scores indicate more severity. Percentages are rounded off to nearest single decimal.	Baseline, Hour 24 (Double-blind Period)
Percentage of Participants With a ≥ 4-point Improvement From Baseline in FLO-11 Item 5 (Look Less Attractive) for GL at Day 7 [European Union Regulatory Agencies]	[Secondary endpoint for European Union regulatory agencies] The Facial Lines Outcomes (FLO-11) Questionnaire is an 11-item validated measure that assesses appearance-related psychological impacts of glabellar lines (GL) from the participant's perspective. Items 1-10 are assessed on an 11-point numeric rating scale that ranges from 0 (Not at all) to 10 (Very much), with higher scores indicating negative impact. Item 11 is scored in the reverse direction. Participants answered FLO-11 Item 5 (Look Less Attractive). Percentages are rounded off to nearest single decimal.	Baseline, Day 7 (Double-blind Period)
Percentage of Participants With a Grade 0 or 1 and a ≥ 2-grade Improvement From Baseline on the FWS According to Participant Assessment of Glabellar Lines (GL) Severity at Maximum Frown Over Time [US FDA]	Secondary endpoint for the United States FDA] Percentage of participants with a Grade 0 or 1 (none or mild) and at least a 2-grade improvement from Baseline on the Facial Wrinkle Scale (FWS) according to participant assessment of glabellar lines (GL) severity at maximum frown over time are reported. Assessments were performed using the 4-grade Facial Wrinkle Scale (FWS), where 0=none, 1=mild, 2=moderate, and 3=severe. Higher scores indicate more severity. Percentages are rounded off to nearest single decimal.	Baseline, Hours 8, 12, 24, 36, and 48, Days 7, 14, 21, 28, 35, and 43 (Double-blind Period)
Percentage of Participants With a ≥ 2-grade Improvement From Baseline on the FWS According to Investigator Assessment of GL Severity at Maximum Frown at Hour 24 [European Union Regulatory Agencies]	[Secondary endpoint for European Union regulatory agencies] Percentage of participants with a ≥ 2-grade improvement from Baseline on the Facial Wrinkle Scale (FWS) according to investigator assessment of glabellar lines (GL) severity at maximum frown at Hour 24 during the Double-Blind Period are reported. Assessments were performed using the 4- grade Facial Wrinkle Scale (FWS), where 0=none, 1=mild, 2=moderate, and 3=severe. Higher scores indicate more severity. Percentages are rounded off to nearest single decimal.	Baseline, Hour 24 (Double-blind Period)
Percentage of Participants With Achievement of Mostly Satisfied or Very Satisfied on the Facial Lines Satisfaction Questionnaire (FLSQ) Follow-up Version Item 5 (Overall Satisfaction) for GL at Hour 24 [European Union Regulatory Agencies]	[Secondary endpoint for European Union regulatory agencies] The FLSQ is a validated measure that assesses treatment expectations, treatment satisfaction, and psychosocial impact of GL from the participant perspective. Participants assessed their overall satisfaction with their glabellar lines using a 5-point verbal descriptor scale (VDS): very dissatisfied, mostly dissatisfied, neither dissatisfied nor satisfied, mostly satisfied, and very satisfied. The percentage of participants mostly satisfied or very satisfied is reported. Percentages are rounded off to nearest single decimal.	Hour 24 (Double-blind Period)
Percentage of Participants With Achievement of Mostly Satisfied or Very Satisfied on the Facial Lines Satisfaction Questionnaire (FLSQ) Follow-up Version Item 4 (Natural Look) for GL at Day 7 [European Union Regulatory Agencies]	[Secondary endpoint for European Union regulatory agencies] The FLSQ is a validated measure that assesses treatment expectations, treatment satisfaction, and psychosocial impact of GL from the participant perspective. Participants assessed their satisfaction with natural look using a 5-point verbal descriptor scale (VDS): very dissatisfied, mostly dissatisfied, neither dissatisfied nor satisfied, mostly satisfied, and very satisfied. The percentage of participants mostly satisfied or very satisfied is reported. Percentages are rounded off to nearest single decimal.	Day 7 (Double-blind Period)
Percentage of Participants With a ≥ 4-point Improvement From Baseline in FLO-11 Item 10 (Look Angry) for GL at Day 7 [European Union Regulatory Agencies]	[Secondary endpoint for European Union regulatory agencies] The Facial Lines Outcomes (FLO-11) Questionnaire is an 11-item validated measure that assesses appearance-related psychological impacts of glabellar lines (GL) from the participant's perspective. Items 1-10 are assessed on an 11-point numeric rating scale that ranges from 0 (Not at all) to 10 (Very much), with higher scores indicating negative impact. Item 11 is scored in the reverse direction. Participants answered FLO-11 Item 10 (Look Angry). Percentages are rounded off to nearest single decimal.	Day 7 (Double-blind Period)

Collaborators and Investigators

• Sponsor: AbbVie
• Investigators: Study Director: ABBVIE INC., AbbVie

Study record dates

Study Major Dates

• Study Start (Actual): March 8, 2022
• Primary Completion (Actual): February 1, 2023
• Study Completion (Actual): February 1, 2023

Study Registration Dates

• First Submitted: February 14, 2022
• First Submitted That Met QC Criteria: February 14, 2022
• First Posted (Actual): February 21, 2022

Study Record Updates

• Last Update Posted (Actual): February 18, 2026
• Last Update Submitted That Met QC Criteria: January 30, 2026
• Last Verified: January 1, 2026

More Information

Terms related to this study

• Keywords: Glabellar Lines; AGN-151586
• Other Study ID Numbers: M21-508

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: YES
• IPD Plan Description: AbbVie is committed to responsible data sharing regarding the clinical trials we sponsor. This includes access to anonymized, individual and trial-level data (analysis data sets), as well as other information (e.g., protocols, analyses plans, clinical study reports), as long as the trials are not part of an ongoing or planned regulatory submission. This includes requests for clinical trial data for unlicensed products and indications.
• IPD Sharing Time Frame: For details on when studies are available for sharing visit https://vivli.org/ourmember/abbvie/
• IPD Sharing Access Criteria: Access to this clinical trial data can be requested by any qualified researchers who engage in rigorous independent scientific research, and will be provided following review and approval of a research proposal and statistical analysis plan and execution of a data sharing statement. Data requests can be submitted at any time after approval in the US and/or EU and a primary manuscript is accepted for publication. For more information on the process, or to submit a request, visit the following link https://www.abbvieclinicaltrials.com/hcp/data-sharing/
• IPD Sharing Supporting Information Type: STUDY_PROTOCOL; SAP; CSR

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: Yes
• Studies a U.S. FDA-regulated device product: No
• product manufactured in and exported from the U.S.: No