This study is a multiple dose escalating design to evaluate the safety, PK, and pharmacodynamics (PD) of multiple subcutaneous injections of SHR-1314. There are two parts in this study. The safety, PK, and PD will be evaluated in Part A, the dose escalation part. The efficacy and safety on different doses will be assessed in parallel-groups in Part B.
This is a multi-regional, randomized, double-blind, placebo-controlled, clinical trial to evaluate the safety, tolerability, pharmacokinetics (PK), and efficacy of SHR-1314 in adults with moderate-to-severe plaque psoriasis.