RecruitingPhase 1Drug trialA Study to Evaluate the Safety, Tolerability, Pharmacokinetics, Pharmacodynamics and Efficacy of ASC50 Tables in Healthy Participants and Participants With Plaque PsoriasisThis is a phase I, randomized, double-blind, placebo-controlled, single and multiple ascending dose study to evaluate the safety, tolerability, pharmacokinetics, pharmacodynamics, food effect of ASC50 tablets in healthy adult participants and adult participants with mild to moderate plaque psoriasis.