Efficacy and safety of topical GT20029 in male patients with androgenetic alopecia: a phase 2 study
Hu R, et al.Journal of Dermatological Treatment
- Population
- Chinese adult men with androgenetic alopecia (Hamilton-Norwood IIIv–V)
- Sample
- n = 180
- Objective
- To evaluate the efficacy and safety of topical GT20029, an androgen-receptor degrader, in men with androgenetic alopecia.
- Endpoint investigated
- Target-area hair count and target-area hair weight, with adverse events
Study design
- Phase
- Phase 2
- Duration
- 12 weeks
- Intervention, as the source describes it
- Topical GT20029 solution at several dose levels and application frequencies, compared with placebo
- Comparator
- Placebo
- Primary endpoint
- Efficacy and safety of topical GT20029 in androgenetic alopecia
- Registry
- NCT06692465
This describes the published study design. It is not a usage or dosing recommendation.
The authors report statistically significant improvements in target-area hair count in some GT20029 groups versus placebo over 12 weeks, and a significant improvement in target-area hair weight in one treatment group. Adverse-event incidence was similar across groups and events were mostly mild.
Limitations. One Phase 2 trial in Chinese men over 12 weeks. It does not establish Phase 3-level efficacy, long-term safety or superiority to any approved treatment, and no public identity standard for the drug substance was identified.
DOI 10.1080/09546634.2025.2574304Hu et al., J Dermatolog Treat (2025) — PubMed 41328006Reviewed 13 November 2026
