A Study Assessing KB304 for the Treatment of Wrinkles in Women (Pearl-2)

May 8, 2025 updated by: Krystal Biotech, Inc.

A Phase 1/2 Study of KB304, a Replication-Defective, Non-Integrating Vector Expressing Human Type III Collagen (COL3) and Tropoelastin for the Treatment of Wrinkles

The aim of this study is to investigate the safety and efficacy of KB304, an investigational gene therapy to correct moderate to severe wrinkles in the décolleté region (V-shaped chest area). KB304 is an investigational gene therapy that delivers functional, full-length human collagen (COL3) and elastin (tropoelastin) to the skin through small injections using the Sponsor's genetically engineered Herpes Simplex Virus (HSV-1) vector. The study is a randomized double-blind study and participants will receive either KB304 (active group) or placebo (inactive group).

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Active, not recruiting

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.
19

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 2
  • 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 Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Contact Backup

Study Locations

  • United States
    • California
      • Newport Beach, California, United States, 92663
        • Steve Yoelin Medical Associates

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

Yes

Description

Inclusion Criteria:

  • Female in good general health, as determined by the Investigator, aged ≥18 and ≤75 at the time of consent.
  • Presence of moderate to severe dynamic wrinkles in the décolleté Target Area, as determined by the Investigator on the JDWS.
  • A Fitzpatrick skin phototype score of I-IV.
  • A negative urine pregnancy test at Screening and Day 1 (Visit 2) for subjects of child-bearing potential.
  • Signed and dated informed consent and willingness to attend all study visits and complete all procedures required by the protocol.

Exclusion Criteria:

  • Any transient or chronic skin condition, disorder, or infection within 20 cm of the Target Area at Day 1 (Visit 2) that, in the opinion of the Investigator, may interfere with the interpretation of study results.
  • Scars, tattoos or tanned skin (defined as skin that is tanned from sun exposure, tanning beds, or an applied skin color such as a spray tan) within the Target Area at Day 1 (Visit 2).
  • History of laser treatment, microneedling, chemical peels within 3 months of Day 1 (Visit 2), or botulinum toxin within 6 months of Day 1 (Visit 2) to the Target Area.
  • History of surgical procedures to Target Area, including removal of benign or malignant skin cancers that, in the opinion of the Investigator, may interfere with the interpretation of study results.
  • Administration of a cosmetic and/or investigational agent, in the Target Area within 6 months of Day 1 (Visit 2), that, in the opinion of the Investigator, may interfere with the interpretation of study results.
  • Any condition (including a history or current evidence of substance abuse or dependence, ongoing systemic infection, infection local to the Target Area, immunosuppression, or recent history of or active malignancy in the Target Area) that, in the Investigator's opinion, would impact the subject's ability to complete all study-related procedures and/or poses an additional risk to the assessment of safety of the Investigational Product.
  • Subject who is pregnant or nursing.
  • Subject who is unwilling to comply with contraception requirements per-protocol.
  • Subject is known to be noncompliant or is unlikely to comply with the requirements of the study protocol, in the opinion of the Investigator

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: Triple

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.
Placebo Comparator: Placebo
Drug: 0.9% Normal Saline (NS)
Placebo
Experimental: KB304
Biological: KB304
Genetically modified herpes simplex type 1 virus

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
Measure Description
Time Frame
Safety and tolerability of KB304 versus placebo administered by intradermal injection
Time Frame: Up to 4 months
Treatment related adverse events as assessed by CTCAE
Up to 4 months

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
To evaluate the effect of KB304 versus placebo on dynamic wrinkles of the décolleté area.
Time Frame: Up to 4 months
Change from baseline as compared to placebo in the Investigator's live assessment (using a 6-Point Global Aesthetic Improvement Scale (GAIS)) and the participants' self-assessment where +2 is much improved and -2 is not applicable.
Up to 4 months
To evaluate the effect of KB304 versus placebo on dynamic wrinkles of the décolleté area.
Time Frame: Up to 4 months
Change from baseline as compared to placebo in the Investigator's live assessment (using a 5-Point Jeune Décolleté Wrinkle (JDWS) Photographic Scale) where 0 is none and 4 is extremely severe.
Up to 4 months
To evaluate the effect of KB304 versus placebo on dynamic wrinkles of the décolleté area.
Time Frame: Up to 4 months
Change from baseline as compared to placebo in subject satisfaction using a 6-Point Scale where +2 is very satisfied and -2 is not applicable.
Up to 4 months

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.
Krystal Biotech, Inc.

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.
November 20, 2024

Primary Completion (Estimated)

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.
July 1, 2025

Study Completion (Estimated)

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 1, 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).
December 5, 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.
December 5, 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.
December 9, 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.
May 13, 2025

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.
May 8, 2025

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.
December 1, 2024

More Information

Terms related to this study

Keywords

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.
  • KB304-01

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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