Safety, Pharmacokinetics and Efficacy of PP405 in Adults With AGA

December 9, 2025 updated by: Pelage Pharmaceuticals, Inc.

A Randomized, Multicenter, Double-blind, Vehicle-controlled, Phase 2a Study to Assess the Safety, Pharmacokinetics, and Efficacy of PP405 in Adults With Androgenetic Alopecia

The study is a two part study, designed to validate safety results from the Phase 1 PP405-001 trial while also characterizing longer term safety and PK. Part 1 of the trial is the randomized controlled portion that will focus on safety and PK following 28 days of blinded treatment administration with either PP405 or vehicle control. Part 2 of the trial is an open-label extension that will validate the results of Part 1 with 3 months of treatment administration.

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.

Detailed Description

Safety, Pharmacokinetics, and Efficacy Study of PP405 in subjects with Androgenetic Alopecia.

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.
78

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

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 Locations

  • United States
    • California
      • Encinitas, California, United States, 92024
        • California Dermatology & Clinical Research Institute
      • Thousand Oaks, California, United States, 91320
        • Clinical Trials Research Institute
    • Indiana
      • Indianapolis, Indiana, United States, 46250
        • Dawes Fretzin Clinical Research Group, LLC
    • Minnesota
      • New Brighton, Minnesota, United States, 55112
        • Minnesota Clinical Study Center
    • Texas
      • Austin, Texas, United States, 78759
        • DermResearch
      • Sugar Land, Texas, United States, 77479
        • Stride Clinical Research LLC
    • Utah
      • South Jordan, Utah, United States, 84095
        • Jordan Valley Dermatology Center
    • Virginia
      • Norfolk, Virginia, United States, 23502
        • Virginia Clinical Research, Inc.

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

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  1. Male or female subjects aged 18 to 55 years.
  2. Able and willing to provide written informed consent.
  3. Males must have an AGA modified Norwood-Hamilton Classification score of Type III vertex, Type IV or Type V. Females must have a Savin classification score of I-2, I-3 or I-4.
  4. Agree to comply with protocol procedures

Exclusion Criteria:

  1. Concomitant diagnosis of non-AGA forms of alopecia.
  2. Use of other hair loss treatments within periods specified in protocol.
  3. Use of excluded medications as specified in protocol.
  4. Diagnosis of other medical conditions as specified in protocol.
  5. Any disease or medical condition that, in the opinion of the Investigator, would prevent the subject from participating in the study or might confound study results.

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: Crossover Assignment
  • Masking: Quadruple

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.
Active Comparator: PP405 0.05% Topical Gel
0.05% Topical Gel applied once daily
Drug: PP405 0.05% Topical Gel
PP405 is an inhibitor of mitochondrial pyruvate carrier (MPC)
Placebo Comparator: PP405 Topical Vehicle Gel
Placebo Topical Gel applied once daily
Drug: PP405 Topical Vehicle Gel
PP405 Vehicle = placebo
Other: PP405 0.05% Topical Gel - Open Label Extension
0.05% Topical Gel applied once daily for subjects who crossover into the Open-label Extension
Drug: PP405 0.05% Topical Gel
PP405 is an inhibitor of mitochondrial pyruvate carrier (MPC)

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
Percentage of subjects with treatment-related adverse events
Time Frame: Part 1: Baseline to Day 28; Part 2: Baseline-OLE to Day 84-OLE
Collection of adverse events, treatment emergent adverse events and serious adverse events.
Part 1: Baseline to Day 28; Part 2: Baseline-OLE to Day 84-OLE
Change in local dermal tolerability as assessed by subject and investigator
Time Frame: Part 1: Baseline to Day 28; Part 2: Baseline-OLE to Day 84-OLE
Collection of local skin reactions using a 4 point scale (0-none, 1-mild, 2-moderate, 3-severe)
Part 1: Baseline to Day 28; Part 2: Baseline-OLE to Day 84-OLE

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
Pharmacokinetics of PP405
Time Frame: Part 1: Baseline to Day 28; Part 2: Baseline-OLE to Day 84-OLE
To assess the concentration of PP405 in plasma
Part 1: Baseline to Day 28; Part 2: Baseline-OLE to Day 84-OLE

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.
Pelage Pharmaceuticals, Inc.

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.
  • Study Chair: Christina Weng, Pelage Pharmaceuticals

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.
June 5, 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.
July 16, 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.
October 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).
April 26, 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.
April 26, 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.
May 1, 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.
December 11, 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.
December 9, 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, 2025

More Information

Terms related to this study

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.
  • PP405-2001

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

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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