The goal of this clinical trial is to evaluate the safety and tolerability of the study drug WTX-330 when administered using a fixed dose regimen or a step-up dose regimen in adult patients with selected advanced or metastatic solid tumors or lymphoma. In addition to safety and tolerability, the study aims to: * determine the maximum initial dose of WTX-330 that may be used in the step-up dose regimen * determine whether the step-up dose regimen can increase WTX-330 exposure in patients due to improved tolerability * determine the maximum tolerated dose (MTD) of WTX-330 and/or recommended dose for expansion (RDE) for each regimen * evaluate the antitumor activity of WTX-330 * characterize the pharmacokinetic (PK) profile of WTX-330 * characterize the interferon gamma (IFNγ) profile after treatment with WTX-330 * evaluate changes in immunological biomarkers * determine the impact of WTX-330 on overall survival (OS) Study participants will participate in a dose- and regimen-finding phase (Part 1) followed by a dose expansion phase (Part 2) where they will be assigned to one of three arms (A, B and C).
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Incidence of Dose Limiting Toxicities (DLTs)
Timeframe: 4 weeks
Incidence of treatment emergent adverse events
Timeframe: 24 months
Incidence of changes in clinical laboratory abnormalities
Timeframe: 24 months
Overall response rate (ORR) by response evaluation criteria in solid tumors (RECIST) 1.1 and the immune-overall response rate (iORR) by immune RECIST (iRECIST; Part 2, Arms A and B) or response by Lugano classification (Part 2, Arm C)
Timeframe: 24 months
Duration of response (DOR) by response evaluation criteria in solid tumors (RECIST) 1.1 and immune RECIST (iRECIST; Part 2, Arms A and B) or based on Lugano classification (Part 2, Arm C)
Timeframe: 24 months