Clinical trial Recruiting at 34 sites Phase2; Phase3 Interventional Ages 18 to 55 Men only

PP405 0.05% topically applied gel for adult men with pattern hair loss

Official title: A Randomized, Multicenter, Double-blind, Vehicle-controlled, Phase 2/3 Study to Assess Efficacy and Long-Term Safety of PP405 in Adult Males With Androgenetic Alopecia

Run by Pelage Pharmaceuticals, Inc. · NCT07819435 · Data updated 2026-11-12

A topical gel called PP405 is being tested in adult men with androgenetic alopecia to see if it can help with hair growth and is safe over a year.

Quick facts

PhasePhase2; Phase3
Study typeInterventional
Ages18 Years to 55 Years
SexMen only
Enrollment600 (estimated)
SponsorPelage Pharmaceuticals, Inc.
Industry-sponsored
Locations63 sites (Birmingham, Alabama and 62 other locations)
StatusRecruiting
StartedSeptember 21, 2026
Main results expectedDecember 2027
Study endsJune 2028
Registry record updatedOctober 28, 2026
Trial IDNCT07819435 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adult men aged 18 to 55 with documented androgenetic alopecia (Norwood-Hamilton Type IV or V) who consent and comply with study procedures.

Probably not a fit

Individuals not experiencing a response to PP405 or with exclusions related to other hair conditions or medications may not benefit.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This randomized, double-blind study compares PP405 0.05% gel to a vehicle for 24 weeks, then explores long-term safety through week 52 with an optional re-randomization step for the control group. Participants keep reporting hair-related outcomes and adverse events, while continuing the assigned treatment during the extension. The trial includes a 1:1 randomization at baseline and a second randomization at week 24 for the long-term safety portion. Primary endpoints focus on efficacy signals and tolerability in adult men meeting defined hair loss criteria.

Why it matters

Potential benefit: If successful, PP405 could provide a new topical option to support hair growth in men with androgenetic alopecia.

How similar studies have gone: Prior studies with similar topical formulations have shown potential benefits, but long-term safety data in this specific formulation are needed.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Males (assigned at birth) aged 18 to 55 years, inclusive at time of consent.
2. Able and willing to provide written informed consent
3. Must have been experiencing Androgenetic Alopecia (AGA) for at least 6 months prior to screening.
4. Have a modified Norwood-Hamilton score of Type IV or Type V
5. 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 and procedures 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.

Where it's running

  • AllerVie Clinical Research
    Birmingham, Alabama, United States
    Recruiting
  • Cahaba Dermatology & Skin Health Center
    Birmingham, Alabama, United States
    Recruiting
  • Johnson Dermatology
    Fort Smith, Arkansas, United States
    Recruiting
  • Burke Pharmaceutical Research
    Hot Springs, Arkansas, United States
    Recruiting
  • Ablon Skin Institute and Research Center
    Manhattan Beach, California, United States
    Recruiting
  • Clinical Trials Research Institute
    Thousand Oaks, California, United States
    Recruiting
Show 44 more locations
  • Skin Care Research, LLC
    Boca Raton, Florida, United States
    Recruiting
  • Skin Research Institute, LLC
    Coral Gables, Florida, United States
    Recruiting
  • MOORE Clinical Research, Inc.
    Tampa, Florida, United States
    Recruiting
  • Research Institute of the Southeast
    West Palm Beach, Florida, United States
    Recruiting
  • DelRicht Research (Experience Dermatology)
    Atlanta, Georgia, United States
    Recruiting
  • Dawes Fretzin Clinical Research Group, LLC
    Indianapolis, Indiana, United States
    Recruiting
  • Indiana Clinical Trials Center
    Plainfield, Indiana, United States
    Recruiting
  • DelRicht Research @LA Dermatology Associates
    Baton Rouge, Louisiana, United States
    Recruiting
  • DelRicht Research
    New Orleans, Louisiana, United States
    Recruiting
  • Michigan Center for Skin Care Research
    Clinton Township, Michigan, United States
    Recruiting
  • Revival Research Institute, LLC
    Troy, Michigan, United States
    Recruiting
  • Minnesota Clinical Study Center
    New Brighton, Minnesota, United States
    Recruiting
  • DelRicht Research (Town Center Dermatology)
    Wildwood, Missouri, United States
    Recruiting
  • Equity Medical, LLC
    New York, New York, United States
    Recruiting
  • Equity Medical
    The Bronx, New York, United States
    Recruiting
  • Vitality Clinical Trials LLC
    Woodbury, New York, United States
    Recruiting
  • Optima Research Boardman
    Boardman, Ohio, United States
    Recruiting
  • DelRicht Research @Mt Pleasant Dermatology
    Mt. Pleasant, South Carolina, United States
    Recruiting
  • AMR Clinical - Myrtle Beach
    Myrtle Beach, South Carolina, United States
    Recruiting
  • Dermatology Associates of Knoxville
    Knoxville, Tennessee, United States
    Recruiting
  • Delricht Research (Harpeth Valley Dermatology)
    Smyrna, Tennessee, United States
    Recruiting
  • Dermatology Treatment and Research Center
    Dallas, Texas, United States
    Recruiting
  • Dermatology and Laser Surgery Center
    Houston, Texas, United States
    Recruiting
  • Progressive Clinical Research, PA
    San Antonio, Texas, United States
    Recruiting
  • Texas Dermatology & Laser Specialists
    San Antonio, Texas, United States
    Recruiting
  • Jordan Valley Dermatology Center
    South Jordan, Utah, United States
    Recruiting
  • Eurofins CRL Cosmetic LLC
    Forest, Virginia, United States
    Recruiting
  • Innovaderm Research Inc
    Montreal, Quebec, Canada
    Recruiting
  • Northwest Arkansas Clinical Trials Center/Hull Dermatology P.A.
    Rogers, Arkansas, United States
    Not yet recruiting
  • First OC Dermatology Research, Inc.
    Fountain Valley, California, United States
    Not yet recruiting
  • Quest Dermatology Research
    Northridge, California, United States
    Not yet recruiting
  • Integrative Skin Science and Research
    Sacramento, California, United States
    Not yet recruiting
  • TCR Medical Corporation
    San Diego, California, United States
    Not yet recruiting
  • Cleaver Medical Group Dermatology, Inc
    Dawsonville, Georgia, United States
    Not yet recruiting
  • Ada West Research
    Meridian, Idaho, United States
    Not yet recruiting
  • DS Research of Southern Indiana, LLC
    Clarksville, Indiana, United States
    Not yet recruiting
  • Equity Medical
    Bowling Green, Kentucky, United States
    Not yet recruiting
  • DS Research of Kentucky, LLC
    Louisville, Kentucky, United States
    Not yet recruiting
  • Clinical Trials Management, LLC
    Metairie, Louisiana, United States
    Not yet recruiting
  • Brigham and Woman's Hospital
    Boston, Massachusetts, United States
    Not yet recruiting
  • Beth Israel Deaconess Medical Center
    Boston, Massachusetts, United States
    Not yet recruiting
  • Great Lakes Research Group Inc.
    Bay City, Michigan, United States
    Not yet recruiting
  • The Skin Center Dermatology Group
    New City, New York, United States
    Not yet recruiting
  • Marc Avram, MD Office
    New York, New York, United States
    Not yet recruiting

+13 more sites. See ClinicalTrials.gov for the full list.

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.