Chronic Lymphocytic Leukemia Clinical Trial
Official title:
Phase I/II, Open Label, Multicenter Study of Rapcabtagene Autoleucel in Adult Patients With CLL/SLL, 3L+ DLBCL, ALL and 1L HR LBCL
This is a phase I/II study to evaluate the feasibility, safety and preliminary antitumor efficacy of rapcabtagene autoleucel (also known as YTB323). Rapcabtagene autoleucel will be investigated in combination with ibrutinib in chronic lymphocytic leukemia (CLL)/small lymphocytic lymphoma (SLL) and as single agent in diffuse large B-cell lymphoma (3L+ DLBCL), adult acute lymphoblastic leukemia (ALL) and 1st Line High Risk Large B-Cell Lymphoma (1L HR LBCL).
This clinical trial is phase I/II open label, multi-center study of rapcabtagene autoleucel. The Phase I part of the study comprises three independent treatment arms: - Rapcabtagene autoleucel in combination with ibrutinib in adult CLL/SLL participants with SD or PR after at least 6 months of second or subsequent line ibrutinib therapy. As of 05-May-2021, this arm had completed enrollment. - Rapcabtagene autoleucel single agent in adult DLBCL participants having failed two or more lines of chemotherapy and either having progressed (or relapsed) after autologous HSCT or being ineligible for or not consenting to the procedure. - Rapcabtagene autoleucel single agent in adult relapsed/refractory ALL participants The Phase II part of the study comprises two independent cohorts: - Rapcabtagene autoleucel single agent in adult 3L + DLBCL participants having failed two or more lines of chemoimmunotherapy and either having progressed (or relapsed) after autologous HSCT or being ineligible for or not consenting to the procedure. This is an extension of the Phase I r/r DLBCL treatment arm to support Phase II objectives - Rapcabtagene autoleucel single agent in newly diagnosed, adult 1L HR LBCL participants defined as IPI 3-5 and/or DH/TH disease who have completed 2 cycles of CIT and have a response of PR/SD (with a Deauville score of 4-5). In the Phase I part of the trial, the 3L+ DLBCL and ALL arms consist of two parts: a dose escalation part to evaluate feasibility, characterize safety and identify the recommended dose (RD) of rapcabtagene autoleucel, and a dose expansion part to further characterize safety, study rapcabtagene autoleucel cellular kinetics and assess preliminary antitumor activity. Once the RD of rapcabtagene autoleucel is determined for each arm, the corresponding expansion part will commence. In the Phase II part of the trial, approximately 70 additional participants will be enrolled in a 3L+ DLBCL cohort treated at the recommended dose (RD). Including the 3L+ DLBCL participants who were treated at the RD from the Phase I part, it is planned to have in total a cohort of approximately 100 participants included in the primary efficacy analysis based on the efficacy analysis set. In addition, a separate cohort in 1LHR LBCL will be included, with approximately 40 participants planned for the primary efficacy analysis based on the efficacy analysis set. Participants will be followed under the current treatment protocol for safety and efficacy within this trial for a minimum of 2 years before being transferred to the long-term follow-up trial. Once the study is complete, participants will be enrolled in a post-study long term follow-up for lentiviral vector safety for up to 15 years. This post-study long term follow-up for lentiviral vector safety will continue under a separate destination protocol. ;
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