The purpose of this study is to evaluate the safety, tolerability, dose-limiting toxicities (any harmful effect of a drug) (DLT), maximum tolerated dose (MTD), recommended Phase 2 dose (RP2D) and preliminary clinical activity of duvortuxizumab when administered intravenously to participants with relapsed or refractory B-cell malignancies \[diffuse-large B cell lymphoma (DLBCL), follicular lymphoma (FL), mantle-cell lymphoma (MCL), chronic lymphocytic leukemia (CLL), and acute lymphoblastic leukemia (ALL)\].
This first in human study consists of 2 parts: a) The dose escalation part and b) The dose expansion part. This is an openlabel (all participants know the identity of the intervention), multicenter (more than one study site) study to evaluate the safety, establish a recommended Phase 2 dose (RP2D), and to determine the preliminary efficacy of duvortuxizumab in participants with relapsed or refractory B cell malignancies. The dose escalation part of the trial (Part 1) will be comprised of 3 different patient groups based on disease indication: Group 1 (DLBCL, FL, MCL); Group 2 (CLL); Group 3 (ALL). The duvortuxizumab dosing will be done on biweekly and weekly basis. Duvortuxizumab weekly escalating dosing will be investigated. Dose escalation will begin with Group 1 and will initially follow an accelerated dose titration design, followed by a traditional 3+3 design. At each dose escalation level the treatment of the second participant should be initiated after at least 72 hours of observation after the start of the first duvortuxizumab dose of the first participant. Dose escalation in Groups 2 and 3 will follow a 3+3 design and will begin after the initial dose level in Group 1 is deemed safe. Participants \[Group 1 (DLBCL, FL, MCL), Group 2 (CLL) Group 3 (ALL)\] are enrolled into cohorts of increasing dose levels of duvortuxizumab administered in 28 day treatment cycles. Up to 3 RP2Ds may be determined in Part 1 (one RP2D for Group 1, one RP2D for Group 2, and one RP2D for Group 3). In the cohort expansion part of the trial (Part 2), participants with relapsed or refractory B cell malignancies (DLBCL, FL, MCL, CLL and ALL) will be enrolled according to tumor type in up to 5 cohorts and receive duvortuxizumab at the RP2D determined in Part 1 for their disease type. The study consists of 3 periods: Screening period (up to 28 days prior to the first dose of study drug); Treatment period \[first dose of study drug until the End of Treatment Visit (within 30 days after the last dose)\]; and follow up period \[End of Treatment Visit and continue until death, lost to follow up, consent withdrawal, or study end (as determined by the sponsor), whichever occurs first\]. Number of participants who achieve an overall response in each Dose Expansion cohort will be evaluated primarily. Participants' safety will be monitored throughout the study.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
59
Participants currently enrolled in the study will continue to receive duvortuxizumab every 14 days (biweekly dosing) in each 28 -day cycle as an intravenous infusion. In the priming dose regimen, a priming dose will be administered on Day 1 followed by full doses on Day 8 and Day 22, of a 35-day Cycle 1, and then every 14 days in each subsequent 28-day cycle. The cohorts will be opened where participants will receive duvortuxizumab every 7 days (for investigating weekly dosing schedule) in each 28-day cycle as an intravenous infusion. In the priming dose regimen, a priming dose will be administered on Day 1 followed by full doses on Day 8, Day 15, Day 22, and Day 28 of a 35-day Cycle 1, and then every 7 days in each subsequent 28-day cycle.
Participants will receive intravenous infusion of duvortuxizumab at the recommended Phase 2 dose (RP2D) defined in Part 1 for their disease type either with or without a priming dose.
Unnamed facility
Detroit, Michigan, United States
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New York, New York, United States
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Columbus, Ohio, United States
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Philadelphia, Pennsylvania, United States
Unnamed facility
Nashville, Tennessee, United States
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Houston, Texas, United States
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Edegem, Belgium
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Leuven, Belgium
Unnamed facility
Wilrijk, Belgium
Unnamed facility
Lille, France
...and 10 more locations
Part 1: Recommended Phase 2 Dose (RP2D) of Duvortuxizumab
The RP2D will be determined based on safety, clinical activity, pharmacokinetics, and pharmacodynamics in participants with relapsed or refractory B cell malignancies \[diffuse large B cell lymphoma (DLBCL), follicular lymphoma (FL), mantle cell lymphoma (MCL), chronic lymphocytic leukemia (CLL) and acute lymphoblastic leukemia (ALL)\].
Time frame: Approximately 15 months
Part 2: Number of Participants With Overall Response Rate (ORR)
The ORR is defined as the percentage of participants who achieve complete response (CR) or partial response (PR) per criteria for response assessment of Non Hodgkin Lymphomas (NHL) or International Workshop on Chronic Lymphocytic Leukemia (IWCLL), or complete response (CR), complete response with partial hematologic recovery (CRp), or complete response with incomplete recovery of counts (CRi) per response criteria for acute lymphoblastic leukemia (ALL).
Time frame: Approximately 2 Years
Part 1 and 2: Area Under the Curve From Time Zero to End of Dosing Interval (AUC tau) of Duvortuxizumab
The AUC tau is the area under the serum concentration versus time curve during a dose interval time period (tau).
Time frame: Approximately 2 Years
Part 1 and 2: Maximum Serum Concentration (Cmax) of Duvortuxizumab
The Cmax is the maximum observed serum concentration of duvortuxizumab.
Time frame: Approximately 2 Years
Part 1 and 2: Half-Life (t1/2) of Duvortuxizumab
The t(1/2) is defined as 0.693/Lambda (z)
Time frame: Approximately 2 Years
Part 1 and 2: Total Systemic Clearance (CL) of Duvortuxizumab
The CL is a quantitative measure of the rate at which a drug substance is removed from the body.
Time frame: Approximately 2 Years
Part 1 and 2: Volume of Distribution at Steady-State (Vss) of Duvortuxizumab
The Vss is defined as the theoretical volume in which the total amount of drug would need to be uniformly distributed to produce the desired serum concentration of duvortuxizumab at steady state.
Time frame: Approximately 2 Years
Part 1 and 2: Immunogenicity of Duvortuxizumab
Plasma levels of antibodies to duvortuxizumab for evaluation of potential immunogenicity.
Time frame: Approximately 2 Years
Part 2: Duration of Response (DoR)
The DoR is defined as the time from the first observed response (CR or PR) to documented disease progression or death due to any cause.
Time frame: Approximately 2 Years
Part 2: Progression Free Survival (PFS) for DLBCL, FL, MCL, and CLL
The PFS is defined as the time from date of the first dose of study drug to documented disease progression or death due to any cause.
Time frame: Approximately 2 Years
Part 2: Percentage of Participants With Complete Response (CR)
The CR is defined as a best response of CR according to the Criteria for Response Assessment of Non-Hodgkin Lymphomas (NHL), International Workshop on Chronic Lymphocytic Leukemia (CLL) or Response Criteria for acute lymphoblastic leukemia (ALL).
Time frame: Approximately 2 Years
Part 2: Percentage of Participants with Overall Survival
Overall survival is defined as the duration from the date of the first dose of the study drug to the date of death for DLBCL, FL, MCL, CLL, and ALL.
Time frame: Up to followup (Approximately 2 Years)
Part 1 and 2: Number of Participants with Adverse Events (AEs) and Serious AEs
An adverse event (AE) is any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. A serious adverse event (SAE) is an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly.
Time frame: Screening up to follow-up (Approximately 2 Years)
Part 2: Relapse-Free survival for Acute Lymphoblastic Leukemia (RFS for ALL)
Relapse free survival (RFS) is defined as time from the date of the first dose of the study drug to relapse from CR, progressive disease, or death due to any cause for ALL.
Time frame: Approximately 2 Years
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