About this trial
The goal of this clinical trial is to evaluate the safety, tolerability, pharmacokinetics (PK), pharmacodynamics (PD), and preliminary efficacy of YK012 in participants with Moderate to Severe Systemic Lupus Erythematosus (SLE).
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Aged 18 to 75 years (inclusive) at screening, regardless of sex
Meet the 2019 European League Against Rheumatism (EULAR)/American College of Rheumatology (ACR) classification criteria for SLE, with a confirmed SLE diagnosis for at least 24 weeks at screening
Positive for anti-dsDNA antibody and/or antinuclear antibody (ANA) and/or anti-Smith antibody at screening, as determined using the local laboratory's reference ranges at the study site
Medium to high disease activity at screening, defined as: Systemic Lupus Erythematosus Disease Activity Index 2000 (SLEDAI-2K) score ≥7
Disqualifiers
Known allergy to monoclonal antibodies or exogenous human immunoglobulins, or hypersensitivity to the investigational drug or any of its components
Received any anti-CD19/CD20 therapy or any B-cell depleting agents within 6 months prior to enrollment, or B-cell stimulatory factor inhibitors within 3 months or 5 half-lives prior to enrollment
Received TNF inhibitors, interleukin receptor blockers, other small molecules or biologics within 3 months or 5 half-lives prior to enrollment
Received intravenous immunoglobulins or plasmapheresis within 3 months prior to enrollment
Trial design
Sequential
Treatments tested in this trial
YK012
DrugYK012 is a bispecific antibody targeting CD19 and CD3.
Treatment groups
Trial outcomes
Primary outcomes
Ib dose escalation stage: Dose Limiting Toxicity (DLT)
Adverse Event (AE)
An AE is defined as any untoward medical event that occurs after a participant receives the investigational drug, which may be manifested as symptoms, signs, diseases, or laboratory abnormalities, but may not necessarily have a causal relationship with the investigational drug.
Severe Adverse Event (SAE)
An SAE refers to any untoward medical occurrence after the participant receives the IMP that results in one or more of the following: death, life-threatening event, permanent or serious disability or loss of function, hospitalization or prolongation of hospitalization, congenital abnormalities or birth defects.
Ib dose expansion stage and phase II: SRI-4 (Systemic Lupus Erythematosus Responder Index-4) response rates
Secondary outcomes
Area Under the Curve (AUC0-t) of a serum concentration versus time profile
Area under the blood concentration-time curve from zero to infinity (AUC0-∞)
Maximum Concentration (Cmax) of YK012
Time to Reach Cmax (Tmax)
Sponsors and contacts
Click on the lead sponsor to view all of their trials.