A Study to Evaluate Sequential Administration of Injections of AGN-151586 Followed by BOTOX in Adult Participants for Treatment of Glabellar Lines

August 19, 2026 updated by: AbbVie

A Phase 1 Study to Evaluate the Safety and Efficacy of Sequential Administration of AGN-151586 and BOTOX® in Subjects for Treatment of Glabellar Lines (GL)

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. The purpose of this study is to assess how safe and effective sequential administration of AGN-151586 and OnabotulinumtoxinA (BOTOX) is in adult participants with moderate to severe GL.

AGN-151586 is an investigational drug being developed for treatment of moderate to severe glabellar lines. Participants are placed into 1 of 2 groups called treatment arms. In both arms participants will receive both AGN-151586 and BOTOX. Approximately 120 adult participants with moderate to severe glabellar lines enrolled in the study in approximately 8 sites around the United States.

Participants will receive injections of AGN-151586 on Day 1 in the glabellar complex. After meeting treatment criteria, participants in Cohort 1 will receive intramuscular injections of BOTOX on Day 14, and participants in Cohort 2 will receive intramuscular injections of BOTOX on Day 21. Participants will be followed for up to approximately 141 days.

Study Overview

Status

Not yet recruiting

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Estimated)

120

Phase

  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Locations

    • Illinois
      • Lincolnshire, Illinois, United States, 60069
        • Advanced Dermatology - Lincolnshire /ID# 284012

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Moderate or severe glabellar lines (GL) at maximum frown as assessed by both the investigator and participant using the Facial Wrinkle Scale (FWS) at Screening and Baseline (Day 1) Visits
  • Must be in good health as per investigator's judgment based on medical history, physical examination, vital sign measurements, and 12-lead ECG parameters
  • Must have sufficient visual acuity without the use of eyeglasses (contact lens use is acceptable) to accurately assess their GL, in the opinion of the investigator.

Exclusion Criteria:

  • Severe glabellar lines at rest as assessed by the investigator using the FWS
  • Prior exposure to botulinum neurotoxin of any serotype within the last 12 months prior to screening
  • History of hypersensitivity to any botulinum neurotoxin serotype or any other constituents of the study drug

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Cohort 1 - AGN-151586 and BOTOX
Participants will receive AGN-151586 on Day 1, followed by BOTOX on Day 14.
Injection
Injection
Experimental: Cohort 2 - AGN-151586 and BOTOX
Participants will receive AGN-151586 on Day 1, followed by BOTOX on Day 21.
Injection
Injection

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Number of Participants with Adverse Events (AEs)
Time Frame: Up to Approximately Day 141
An adverse event (AE) is defined as any untoward medical occurrence in a patient or clinical investigation participant administered a pharmaceutical product which does not necessarily have a causal relationship with this treatment. The investigator assesses the relationship of each event to the use of study drug and the study drug injection procedure.
Up to Approximately Day 141

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Investigators

  • Study Director: ABBVIE INC., AbbVie

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

August 10, 2026

Primary Completion (Estimated)

March 1, 2027

Study Completion (Estimated)

March 1, 2027

Study Registration Dates

First Submitted

August 7, 2026

First Submitted That Met QC Criteria

August 7, 2026

First Posted (Actual)

August 10, 2026

Study Record Updates

Last Update Posted (Actual)

August 20, 2026

Last Update Submitted That Met QC Criteria

August 19, 2026

Last Verified

August 1, 2026

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

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

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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