This is a phase I clinical trial with a single dose escalation to evaluate the safety, tolerability, pharmacokinetics and pharmacodynamics of JH013 injection in healthy subjects
Four dose groups were set up, 75 mg, 150 mg, 300 mg, and 500 mg, respectively. Eight subjects (6 subjects received JH013 injection, 2 subjects received placebo) were planned to be included in each dose group for subcutaneous administration.The safety and tolerability within 48 hours after administration were first observed in each dose group with 2 subjects (1 subject receiving JH013 injection and 1 subject receiving placebo),after that, the remaining 6 subjects (5 receiving JH013 injection and 1 receiving placebo) were enrolled. Each subject may only participate in this trial in one dose group, and the next higher dose trial will only be allowed after it has been determined that the previous dose has been well safe and tolerated within 28 days of dosing (as determined by an independent, unblinded third-party physician in conjunction with the investigator and sponsor). When the safety evaluation meets the termination criteria during the dose escalation process, the dose between the dose group and the previous dose group can be returned if necessary after discussion by the investigator and the sponsor, and the maximum safe tolerated dose can be explored again. When the dose is escalated to the highest dose set by the protocol and the dose termination criteria are not met, it is up to the investigator and the sponsor to discuss whether to expand to a higher dose.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
TRIPLE
Enrollment
32
JH013 injection is a BAFF-R inhibitor monoclonal antibody
JH013 injections placebo
Safety metrics
Including Adverse events defined by CTCAE 5.0(Common Terminology Criteria for Adverse Events Version 5.0) Version 5.0)
Time frame: from Administration to Day57.
t1/2
Half-life
Time frame: from Administration to Day57.
Cmax
maximum plasma concentration
Time frame: from Administration to Day57.
CD45+CD19+ B cell
Detection CD45+CD19+ B cell count and ratio in blood
Time frame: from Administration to Day57.
B cell activation factor (BAFF)
Detection B cell activation factor (BAFF) in serum
Time frame: from Administration to Day57.
JH013 antibody
Detection of JH013 antibody occupancy in serum
Time frame: from Administration to Day57.
CD45+CD3+T cell
Detection of CD45+CD3+T cell count and ratio blood
Time frame: from Administration to Day57.
Drug immunogenicity
Detection of anti-drug antibodies in serum
Time frame: from Administration to Day57.
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