A Study on the Efficacy and Safety of Repeated Treatments With Recombinant Botulinum Toxin Type A for Injection in the Treatment of Moderate to Severe Glabellar Lines

June 26, 2026 updated by: Chongqing Claruvis Pharmaceutical Co., Ltd.

A Multi-center, Open-label Study on the Efficacy and Safety of Repeated Treatments With Recombinant Botulinum Toxin Type A for Injection in the Treatment of Moderate to Severe Glabellar Lines

This is a Multi-center, Open-label Study on the Efficacy and Safety of Multiple Treatments with Recombinant Botulinum Toxin Type A for Injection in the Treatment of Moderate to Severe Glabellar Lines. The study has been designed to evaluate the long-term safety, tolerability, efficacy , maintain time and immunogenicity of multiple treatments with Recombinant Botulinum Toxin Type A for Injection (YY001) in the treatment of moderate to severe glabellar lines.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
488

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 3

Contacts and Locations

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

Study Locations

  • China
      • Beijing, China
        • Peking University First Hospital
      • Beijing, China
        • Peking University Third Hospital
      • Beijing, China
        • Beijing Tsinghua Changgung Hospital
      • Beijing, China
        • Peking Union Medical College Hospital , Chinese Academy of Medical Sciences
      • Beijing, China
        • Plastic Surgery Hospital, Chinese Academy of Medical Science
      • Hongqing, China
        • The First Affiliated Hospital of Chongqing Medical University
      • Tianjin, China
        • Tianjin Medical University General Hospital
    • Guangdong
      • Guangzhou, Guangdong, China
        • Nanfang Hospital, Southern Medical University
      • Guangzhou, Guangdong, China
        • The third affiliated hospital of Sun Yat-Sen University
      • Guangzhou, Guangdong, China
        • Guangdong Second People's Hospital
    • Hubei
      • Wuhan, Hubei, China
        • Union Hospital, Tongji Medical College, Huazhong University of Science and Technology
    • Hunan
      • Changsha, Hunan, China
        • The Third XIANGYA Hospital of Central South University
    • Shanxi
      • Xian, Shanxi, China
        • The Second Affiliated Hospital of Xi'an Jiaotong University
    • Sichuan
      • Chengdu, Sichuan, China
        • West China School of Medicine/West China Hospital of Sichuan University
    • Zhejiang
      • Hangzhou, Zhejiang, China
        • Zhejiang Provincial People's Hospital
      • Hangzhou, Zhejiang, China
        • Affiliated Hangzhou First People's Hospital, Westlake University, School of Medicine

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  1. Male or female 18 to 65 years (inclusive) at the time of signing the informed consent form.
  2. At screening or baseline, participants who complete all visits of the REFINE study without major protocol deviations and SAEs
  3. Agree to participate in the study and sign the informed consent form.
  4. At the discretion of the investigator, the participants can comply with the protocol requirements.
  5. Females and/or males of childbearing potential and their partners: those who should be using effective contraception and have no plans for childbearing, egg donation (females), or sperm donation (males) from the signing of the informed consent form to 3 months after the last administration. female participants of childbearing potential must have had a negative blood pregnancy test (human chorionic gonadotropin) within 7 days prior to the first administration of study drug or a Urine pregnancy test examination must be negative 3 days prior to the first administration of study drug.

Note:

  1. Women of childbearing potential are those who have experienced menarche, have not undergone sterilization (hysterectomy or bilateral salpingo-oophorectomy or bilateral tubal ligation), and are not in a state of post-menopausal (defined as absence of menstrual bleeding for 12 months prior to screening, without any other medical reason).
  2. Effective contraceptives include: vasectomy, abstinence, intrauterine devices, hormones [oral, patch, ring, injections, implants], barrier methods [diaphragm, cervical cap, sponge, condom].

Exclusion Criteria:

  1. Use of medications or treatments prohibited by the REFINE study protocol.
  2. Any condition that required permanent discontinuation of study treatment during the REFINE study.
  3. Use of nonsteroidal anti-inflammatory drugs including aspirin or anticoagulants within 1 week prior to baseline.
  4. Abnormal laboratory tests that, in the assessment of the investigator, are not appropriate for participation in this study: including, but not limited to: alanine aminotransferase (ALT)/aspartate aminotransferase (AST) ≥ 2.5 times the upper limit of the normal range (×ULN), creatinine ≥ 2 ×ULN, urea/urea nitrogen ≥ 2 ×ULN.
  5. Female who is pregnant or breast feeding.

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: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Treatment Group
Five sites will be repeatedly injected with Rcombinant botulinum neurotoxin type A for injection (YY001) at 0.05 mL each, 2 sites in corrugator muscle of each side and 1 site in the procerus muscle, for a total dose of 20U.The study period is up to 64 weeks, divided into 5 treatment cycles.
Biological: Rcombinant botulinum neurotoxin type A for injection (YY001)
Five sites will be injected at 0.05 mL each, 2 sites in corrugator muscle of each side and 1 site in the procerus muscle, for a total dose of 20U.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
Incidence of serious adverse events and drug-related adverse events during the study.
Time Frame: Up to 64 weeks
Up to 64 weeks

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
The proportion of participants who achieve a score of 0 or 1 on the investigator's assessment of GL severity.
Time Frame: At Weeks 1, 4, 12, 24 (if applicable), and 36 (if applicable) after each treatment.
Glabellar lines at maximal frown are based on the 4 grade Facial Wrinkle Scale: 0 (none), 1 (mild), 2 (moderate) and 3 (severe).
At Weeks 1, 4, 12, 24 (if applicable), and 36 (if applicable) after each treatment.
The proportion of participants who achieve a score of 0 or 1 on the participant's self-assessment and Independent Review Committee's assessment of GL severity photos at maximal frown taken on-site.
Time Frame: At Weeks 1(for participants), 4, 12, 24 (if applicable), and 36 (if applicable) after each treatment.
At Weeks 1(for participants), 4, 12, 24 (if applicable), and 36 (if applicable) after each treatment.
The respond rate on the investigator's assessment of GL severity at maximal frown.
Time Frame: At Weeks 1, 4, 12, 24 (if applicable), and 36 (if applicable) after each treatment.
The respond rate: The proportion of participants achieving a score of 0 or 1 and at least a two-grade improvement from the baseline, on the investigator's assessment and the participant's self-assessment concurrently of GL severity at maximal frown.
At Weeks 1, 4, 12, 24 (if applicable), and 36 (if applicable) after each treatment.
The proportion of participants with a decrease of at least 1 grade from the baseline, on the investigator's assessment and the participant's self-assessment individually of GL severity at rest.
Time Frame: At Weeks 1, 4, 12, 24 (if applicable), and 36 (if applicable) after each treatment.
The severity of glabellar lines at rest will be assessed according to the 4 grade scale: 0 (none), 1 (mild), 2 (moderate) and 3 (severe).
At Weeks 1, 4, 12, 24 (if applicable), and 36 (if applicable) after each treatment.
Incidence of anti-drug antibodies and neutralizing antibodies during the study.
Time Frame: Up to 64 weeks
Up to 64 weeks
The lasting time from a single injection to the participants' score of GL severity at maximal frown on the investigator's assessment return to the baseline.
Time Frame: Up to 64 weeks
Up to 64 weeks

Collaborators and Investigators

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

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Chongqing Claruvis Pharmaceutical Co., Ltd.

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Yan Wu, Peking University First Hospital

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 (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
March 19, 2024

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
August 25, 2025

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
August 25, 2025

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
July 7, 2024

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
September 1, 2024

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
September 4, 2024

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
June 29, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 26, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
June 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • YY001-001-Ⅲ-RENEW
  • CTR20240641 (Registry Identifier: www.chinadrugtrials.org.cn)

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

No

Studies a U.S. FDA-regulated device product

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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