JMKX-000189

Primary objective To evaluate the pharmacodynamic (PD) characteristics of JMKX000189 tablets in subjects with moderately to severely active SLE Secondary objectives To evaluate the efficacy of JMKX000189 tablets in reducing disease activity in subjects with moderately to severely active SLE To evaluate the safety and tolerability of JMKX000189 tablets in subjects with moderately to severely active SLE To evaluate the pharmacokinetic (PK) characteristics of JMKX000189 tablets in subjects with moderately to severely active SLE