Tackling Underrepresentation to Aid Understanding of Parkinson’s Disease: Progress and Further Opportunities

The conversation discusses the delay in the PP405 Phase 2 study results, now expected by the end of 2025, and skepticism about research practices. There is also mention of optimism for Amplifica's AMP303 and a topical treatment in early testing.

New hair loss treatments PP405 and VDPHL01 are discussed with skepticism and hope, alongside existing treatments like minoxidil and finasteride. Users express frustration over limited progress since the 1980s but remain cautiously optimistic.

A user is advocating for Phase 3 trials of the hair loss treatment PP405 to be conducted in Germany, citing benefits like a diverse patient base and faster access for European patients. Despite skepticism about the petition's influence, the user believes it can demonstrate significant interest and potentially influence strategic decisions.

PP405's phase 2a trial results were presented, focusing on safety and pharmacokinetics, with a future meeting planned to share the full dataset. The trial includes a randomized controlled portion and an open-label extension, with no indication of phase 2B completion.

The conversation discusses potential hair loss treatments, including clascoterone, GT20029, ET-02, VDPHL01, and PP405, with hopes for new options by 2028. Current treatments like minoxidil and finasteride are expected to remain effective, with clascoterone and VDPHL01 as promising alternatives.

PP405 trials have completed phase 2a, showing promising results with a 31% stat for hair density increase, and are moving directly to phase 3. Detailed results will be presented at a medical conference in 2026.