About this trial
This is a multicenter, open-label Phase I clinical trial of BEBT-507 in subjects with polycythemia vera(PV). Phase Ia is a single-agent dose-escalation study designed to evaluate the safety, tolerability, pharmacokinetics (PK), preliminary efficacy, and pharmacodynamics of BEBT-507 in subjects with PV . Based on the results of Phase Ia, two doses will be selected for further evaluation in Phase Ib to assess the efficacy, safety, and PK profile of BEBT-507 in subjects with PV , and to recommend a dose for Phase III clinical trials.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Male and female subjects aged 18-75 years (inclusive);
Subjects diagnosed with polycythemia vera (PV) according to the 2016 world health organization (WHO) criteria;
Disqualifiers
A history of intolerance to oligonucleotides, N-Acetylgalactosamine (GalNAc), or excipient components, or a history of intolerance to subcutaneous injections.
Clinically significant thrombosis (e.g., deep vein thrombosis or splenic vein thrombosis) within 12 weeks before screening.
Major bleeding event or blood transfusion for bleeding within 6 months before screening.
Meets the international working group for myeloproliferative neoplasms research and treatment criteria for post-PV myelofibrosis.
Trial design
Sequential
Treatments tested in this trial
BEBT-507 Injection
DrugThe initial dose of BEBT-507 injection is 1.25mg/kg, administered subcutaneously at 1.25mg/kg, 2.5mg/kg, 5mg/kg, 10mg/kg or 15mg/kg every 12 weeks for two doses in total.
Treatment groups
Trial outcomes
Primary outcomes
MTD
Maximum Tolerated Dose
DLT
Dose-Limiting Toxicity
Proportion of Subjects With Hematocrit (HCT) < 45%
The proportion of subjects with HCT\<45% following at least 21 days without or with specified therapies (phlebotomy or erythrocytapheresis).
Secondary outcomes
AUC0-∞
The area under the plasma concentration-time curve from time zero to infinity.
AUC0-last
The area under the plasma concentration-time curve from administration to the last measurable concentration time point.
Cmax
The maximum plasma drug concentration
Tmax
The time to reach maximum plasma drug concentration
Sponsors and contacts
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