December 2024 in “Journal of Medicinal Chemistry” In this study, researchers discovered a compound called C6 that exhibits excellent skin retention and androgen receptor degradation properties, significantly promoting hair regeneration in a mouse model of androgenetic alopecia following non-invasive topical application, suggesting potential for broader use of PROTACs in treating skin diseases.
January 2026 in “OSF Preprints (OSF Preprints)” In this study, researchers presented a novel therapeutic approach for androgenetic alopecia combining AR-PROTAC degradation with regenerative strategies and evaluated the potential of GT20029 as a topical treatment, proposing a three-phase protocol and future research hypotheses.
November 2025 in “Journal of Medicinal Chemistry” This review outlines advances in topical PROTACs for localized protein degradation, focusing on AH-001 and GT20029 for skin conditions, but presents no new clinical trial results.
December 2023 in “Journal of Medicinal Chemistry” In this study, researchers identified compound 30a as a promising topical androgen receptor antagonist that promoted hair growth in mouse models of androgenetic alopecia without noticeable toxicity, suggesting its potential for treating this hair loss condition.
December 2022 in “Small methods” This study developed dissolving microneedles incorporating a new AR degrader for treating androgenetic alopecia, showing that a single application leads to superior hair regeneration compared to daily minoxidil, without systemic toxicity or androgen-related issues.