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
| Phase | Phase2; Phase3 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years to 55 Years |
| Sex | Men only |
| Enrollment | 600 (estimated) |
| Sponsor | Pelage Pharmaceuticals, Inc. Industry-sponsored |
| Locations | 63 sites (Birmingham, Alabama and 62 other locations) |
| Status | Recruiting |
| Started | September 21, 2026 |
| Main results expected | December 2027 |
| Study ends | June 2028 |
| Registry record updated | October 28, 2026 |
| Trial ID | NCT07819435 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
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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
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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
- Study coordinator: Lisa Sherman
- Email: clinicaltrials@pelagepharma.com
- Phone: 213-218-3830
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
-
EPI-001 for androgenetic alopecia in adults
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.