Forest

Researchers are assessing the safety and effects of Ritlecitinib, a study medicine, for treating hidradenitis suppurativa (HS), a condition causing long-lasting, painful red skin lumps. This phase 2 study focuses on adults with moderate to severe HS who have not responded well to or cannot tolerate antibiotics. The goal is to compare experiences and outcomes between those receiving Ritlecitinib and those receiving a placebo. Participants will be randomly assigned to take either Ritlecitinib or a placebo pill once daily at home. The treatment involves an initial loading dose of Ritlecitinib for 8 weeks, followed by an 8-week maintenance dose, totaling 16 weeks of treatment. The placebo group will receive a matching pill with no active medicine. Over approximately 24 weeks, including screening and follow-up, participants will attend around 10 clinic visits for health evaluations, including physical exams, blood and urine tests, vital signs, chest X-rays, ECGs, hearing tests, and questionnaires. They will also track their medication intake and HS symptoms daily using an electronic diary on a mobile phone. The study will measure how many patients achieve at least a 50% improvement in HS symptoms by week 16 to evaluate treatment response and safety.

Researchers are evaluating the safety and effectiveness of VDPHL01, an oral investigational drug, in treating female patients with Androgenetic Alopecia (AGA), a genetic condition causing hair loss due to an excessive hair follicle response to hormones. This Phase 3, multi-center, double-blind study involves adult women aged 18 to 65 with mild to moderate AGA. The study aims to assess changes in hair counts and participants' evaluation of treatment benefit after 6 months. Participants will be randomly assigned to receive either VDPHL01 extended release tablets once daily or twice daily, or a placebo tablet. The study includes 11 visits over approximately 13 months: screening, baseline (day 1), weeks 2, months 1, 2, 4, 6, 8, 10, 12, and a final visit at month 13. During the study, participants must maintain consistent hair length, style, and color, and agree to have a micro dot tattoo placed on the scalp for photography and assessment. Throughout the trial, researchers will monitor hair growth through non-vellus target area hair counts and collect participants' feedback on treatment benefits at 6 months. The study involves multiple assessments including photography of the scalp, questionnaires, and general health evaluations. Safety and efficacy data will be collected until the final visit at month 13.