A Clinical Study to Evaluate the Safety, Tolerability, Pharmacokinetics and Preliminary Efficacy of ALD-102 Solution in Subjects With Alopecia Areata

The goal of this first-in-human clinical trial is to learn if ALD-102 Solution is safe and well tolerated following injections in the scalp in subjects with alopecia areata. The study will also learn about the effect of ALD-102 on hair regrowth in treatment areas. The researchers will compare the effects of ALD-102 Solution (drug) to placebo (saline solution that contains no drug) or an untreated area. Study participants will have treatment areas selected on the scalp to receive ALD-102 Solution (drug), placebo (saline solution) or to remain untreated. Injections will occur once every 4 weeks for a treatment period of 8 weeks.