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Androgenetic AlopeciaPhase 2NCT06393452

Safety, Pharmacokinetics and Efficacy of PP405 in Adults With AGA

A Phase 2 study testing PP405 0.05% Topical Gel in people with Androgenetic Alopecia, run by Pelage Pharmaceuticals, Inc. at 8 sites in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

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… Read more about this study

Who is it for?
Ages 18 to 55 yearsHealthy volunteers can take part
Conditions the study is for
Androgenetic Alopecia
What is being tested?
PP405 0.05% Topical Gel
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
78 participants
Where
8 sitesUnited States
Study dates
5 Jun 2024to 1 Oct 2025
Phase
Phase 2
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 55 years
  • All sexes
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • Male or female subjects aged 18 to 55 years.
  • Able and willing to provide written informed consent.
  • 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.
  • Agree to comply with protocol procedures

Who cannot join

  • Concomitant diagnosis of non-AGA forms of alopecia.
  • Use of other hair loss treatments within periods specified in protocol.
  • Use of excluded medications as specified in protocol.
  • Diagnosis of other medical conditions as specified in protocol.
  • 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.

Trial locations and contacts

8 sites in 1 country.

8 sites in 1 country

United States8 sites
  • DermResearch

    Austin, Texas, 78759

  • California Dermatology & Clinical Research Institute

    Encinitas, California, 92024

  • Dawes Fretzin Clinical Research Group, LLC

    Indianapolis, Indiana, 46250

  • Minnesota Clinical Study Center

    New Brighton, Minnesota, 55112

  • Virginia Clinical Research, Inc.

    Norfolk, Virginia, 23502

  • Jordan Valley Dermatology Center

    South Jordan, Utah, 84095

  • Stride Clinical Research LLC

    Sugar Land, Texas, 77479

  • Clinical Trials Research Institute

    Thousand Oaks, California, 91320

Other trials in United States

About this study

Official title: 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.

Read the detailed description

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

Being tested
PP405 0.05% Topical Gel, Topical Vehicle Gel
Medical subject headings
Alopecia

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • PP405 0.05% Topical GelDrug

    Also called PP405 0.05%

    Medicated topical gel containing PP405 0.05%, applied once daily to the scalp

  • Topical Vehicle GelDrug

    Also called Topical Placebo

    Vehicle = placebo topical gel

Study groups in NCT06393452
Study groupRoleWhat they receive
PP405 0.05% Topical GelActive comparatorPP405 0.05% Topical Gel applied once daily for 28 days.
Receives: Drug: PP405 0.05% Topical Gel
Topical Vehicle Gel, then PP405 0.05% Topical GelPlacebo comparatorTopical Placebo Gel applied once daily for 28 days. Following the initial treatment and follow-up period through day 84, eligible subjects crossed over to apply PP405 0.05% topical gel for 84 days in an open-labeled extension.
Receives: Drug: PP405 0.05% Topical Gel; Drug: Topical Vehicle Gel

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Percentage of Subjects With Adverse Events

    An adverse event that was not present when the active phase of the study began and was not a chronic condition that was part of the subject's medical history; or, it was present at the start of the active phase of the study or as part of the subject's medical history, but the severity or frequency increased during the active phase

    Measured: Baseline to Day 84 of the randomized portion of the study

  2. Percentage of Subjects With Adverse Events

    An adverse event that was not present when the active phase of the study began and was not a chronic condition that was part of the subject's medical history; or, it was present at the start of the active phase of the study or as part of the subject's medical history, but the severity or frequency increased during the active phase

    Measured: Baseline to Day 84 of the open label extension portion of the study

  3. Change in Local Dermal Tolerability as Assessed by Subject and Investigator

    Local skin reaction treatment emergent adverse events such as burning, pruritis, erythema

    Measured: Post-dose at day 28 of the randomized portion of the study

  4. Change in Local Dermal Tolerability as Assessed by Subject and Investigator

    Local skin reaction treatment emergent adverse events such as burning, pruritis, erythema

    Measured: Post-dose at day 84 of the open label extension portion of the study

  5. Change From Baseline in Blood Pressure

    Change from baseline in blood pressure in the safety analysis population (day 84 minus baseline)

    Measured: Baseline to Day 84 of the randomized portion of the study

  6. Change From Baseline in Pulse Rate

    Change from baseline in pulse rate in the safety analysis population (day 84 minus baseline)

    Measured: Baseline to Day 84 of the randomized portion of the study

  7. Change From Baseline in Temperature

    Change from baseline in temperature in the safety analysis population (day 84 minus baseline)

    Measured: Baseline to Day 84 of the randomized portion of the study

  8. Change From Baseline in Respiratory Rate

    Change from baseline in respiratory rate in the safety analysis population (day 84 minus baseline)

    Measured: Baseline to Day 84 of the randomized portion of the study

  9. Change From Baseline in Weight

    Change from baseline in weight in the safety analysis population (day 84 minus baseline)

    Measured: Baseline to Day 84 of the randomized portion of the study

  10. Change From Baseline in Blood Pressure

    Change from baseline in blood pressure in the safety analysis population (open label extension day 84 minus open label extension baseline)

    Measured: Baseline to Day 84 of the open label extension portion of the study

  11. Change From Baseline in Pulse Rate

    Change from baseline in pulse rate in the safety analysis population (open label extension day 84 minus open label extension baseline)

    Measured: Baseline to Day 84 of the open label extension portion of the study

  12. Change From Baseline in Temperature

    Change from baseline in temperature in the safety analysis population (open label extension day 84 minus open label extension baseline)

    Measured: Baseline to Day 84 of the open label extension portion of the study

  13. Change From Baseline in Respiratory Rate

    Change from baseline in respiratory rate in the safety analysis population (open label extension day 84 minus open label extension baseline)

    Measured: Baseline to Day 84 of the open label extension portion of the study

  14. Change From Baseline in Weight

    Change from baseline in weight in the safety analysis population (open label extension day 84 minus open label extension baseline)

    Measured: Baseline to Day 84 of the open label extension portion of the study

  15. Change From Baseline in Mean Electrocardiogram Heart Rate

    Electrocardiogram mean heart rate was compared to baseline (day 28 minus baseline)

    Measured: Baseline to day 28 of the randomized portion of the study

  16. Change From Baseline in Electrocardiogram (ECG) Results

    Electrocardiograms results were compared to baseline (day 28 minus baseline)

    Measured: Baseline to day 28 of the randomized portion of the study

  17. Change From Baseline in Mean Electrocardiogram Heart Rate

    Mean Electrocardiogram Heart Rate was compared to baseline of the open label extension study (day 84 minus baseline)

    Measured: Baseline to day 84 of the open label extension portion of the study

  18. Change From Baseline in Electrocardiograms (ECGs)

    Electrocardiograms results were compared to baseline of the open label extension study (day 84 minus baseline)

    Measured: Baseline to day 84 of the open label extension portion of the study

  19. Abnormal Laboratory Values

    Chemistry and hematology laboratory values were recorded as normal or abnormal (low or high)

    Measured: Day 28 post baseline in the randomized portion of the study

  20. Abnormal Laboratory Values

    Chemistry and hematology laboratory values were recorded as normal or abnormal (low or high)

    Measured: Day 84 post baseline in the open label extension portion of the study

Secondary outcomes (2)
  1. Pharmacokinetics of PP405

    To assess the concentration of PP405 in plasma

    Measured: Baseline to Day 28 of the randomized portion of the study, assessed at 2 hours (±10 minutes) post-dose on day 1, day 14, and day 28

  2. Pharmacokinetics of PP405

    To assess the concentration of PP405 in plasma

    Measured: Baseline to Day 84 of the open label extension portion of the study, assessed at 2 hours (±10 minutes) post-dose on day 1, day 28, day 56, and day 84

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted1 May 2024
  2. Study start5 Jun 2024
  3. Primary completion16 Jul 2025
  4. Study completion1 Oct 2025

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Crossover
Model description
Subjects who were randomized to vehicle in Part 1 were eligible to participate in the Open-label Extension in Part 2 of the study and receive PP405 0.05% topical gel.
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
78 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06393452
Sponsor's protocol ID
PP405-2001
Status last verified
Sep 2026
First submitted
26 Apr 2024
Last updated
21 Oct 2026
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing PP405 0.05% Topical Gel in people with Androgenetic Alopecia, run by Pelage Pharmaceuticals, Inc. at 8 sites in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 21 Oct 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 8 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 22 Sep 2026). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Percentage of Subjects With Adverse Events (time frame: Baseline to Day 84 of the randomized portion of the study). The study lists 20 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 21 Oct 2026.

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