About this trial
The purpose of the study is to compare the efficacy of QLS4131(SC) in combination with QL2109, with or without pomalidomide or lenalidomide, and QLS4131 (SC) in combination with QL2109, and QLS4131 (SC) in combination with Pomalidomide, and QLS4131(SC) in combination with QL2109 and Lenalidomide.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Serum M-protein ≥0.5 g/dL (5 g/L);
Urine M-protein ≥200 mg/24 hours;
Serum immunoglobulin free light chain ≥10 mg/dL (100 mg/L) with an abnormal serum immunoglobulin κ/λ free light chain ratio.
Disqualifiers
History of Grade 3 or higher cytokine release syndrome (CRS) associated with any T-cell redirecting therapy (e.g., CD3-redirecting technologies or CAR-T cell therapy);
Previous treatment with BCMA/GPRC5D/CD3-targeted therapy;
Cytotoxic therapy or small-molecule targeted therapy within 2 weeks or 5 half-lives, If the half-life is unknown, the washout period shall be 2 weeks (whichever is longer);
Immunomodulatory drug therapy within 7 days
Trial design
Parallel
Treatments tested in this trial
QLS4131
DrugQLS4131 will be administered subcutaneously.
QL2109
DrugQL2109 will be administered subcutaneously.
Pomalidomide
DrugPomalidomide will be self-administered as a single dose orally.
Lenalidomide
DrugLenalidomide will be self-administered as a single dose orally.
Dexamethasone
DrugDexamethasone will be administered orally or intravenously.
Treatment groups
Trial outcomes
Primary outcomes
DLT
To evaluate the tolerability and safety of subcutaneous administration of QLS4131 for Injection in combination with other agents in patients with malignant plasma cell neoplasms
MTD
To determine the maximum tolerated dose (MTD)
ORR (Partial Response [PR] or Better)
Overall response (PR or better) is defined as percentage of participants who have a PR or better per International Myeloma Working Group (IMWG) criteria.
Overall Minimal Residual Disease (MRD)
MRD-negative is defined as proportion of participants who achieve MRD negativity at a threshold of 10\^-5 at any timepoint after the first dose of study drug and before disease progression or start of subsequent antimyeloma therapy.
Locations
Sponsors and contacts
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