Non Hodgkin's Lymphoma Clinical Trial
Official title:
A Phase 1/2 Single-center Study Evaluating the Safety and Efficacy of TRAC and Power3 Genes Knock-out Allogeneic CD19-targeting CAR-T Cell (ATHENA) Therapy in Adults With Refractory/Relapsed B-cell Non-Hodgkin Lymphoma
ATHENA chimeric antigen receptor (CAR)-T, a CD19-directed CAR-T cell immunotherapy comprised of allogeneic T cells prepared for the treatment of relapsed or refractory (r/r) B-cell non-Hodgkin's lymphoma (NHL). The cells are from healthy adult volunteer donors that are knocked out of TRAC and Power3 genes ex vivo using CRISPR-Cas9 gene editing components. In this study, a second-generation anti-CD19 CAR prototype was constructed, bearing murine FMC63 single-chain variant fragment (scFv) together with intracellular CD28 co-stimulatory and CD3ζ signaling domains linked by a CD28 sequence comprising the hinge and transmembrane domains. This is a single center, prospective, open-label, single-arm, phase 1/2 study. A total of around 30 patients with r/r B-cell NHL will be enrolled in the study and receive allogeneic CD19-CAR-T cell infusion. Phase 1 (n=6 to 18) is a dose escalation part, and phase 2 (n=10 to 12) is a expansion cohort part. The primary objective of this study was to evaluate the safety and efficacy of ATHENA CAR-T cell therapy in patients with r/r B-cell NHL.
Phase 1 (dose escalation) In phase 1, 6-18 subjects will be enrolled. Subjects will receive 3 doses of ATHENA CAR-T cell therapy ( 1× 10^6 cells/kg、3× 10^6 cells/kg、1 × 10^7 cells/kg) increases from low dose to high dose according to the "3 + 3" principle: Three (3) subjects are enrolled in a cohort corresponding to a dose level. If 1 subject in a cohort of 3 subjects experiences a dose-limiting toxicity (DLT), 3 additional subjects will be enrolled at the current dose level. For safety purposes, the administration of ATHENA CAR T will be staggered by 28 days between the first two subjects in each cohort. And for each of the remaining cohorts, the administration of ATHENA CAR-T will be staggered by 28 days before enter into the next cohort. Phase 2 (expansion cohort) In phase 2, 10 to 12 subjects will be enrolled and receive ATHENA CAR-T cell infusion at dose of recommended phase 2 dose (RP2D), which will be determined based on the maximum tolerated dose (MTD), occurrence of DLT, the obtained efficacy results, pharmacokinetics/pharmacodynamics and other data according to the phase 1. Objectives The primary objectives of the phase 1 were to evaluate the tolerability and safety of ATHENA CAR-T in patients with r/r B-cell NHL, and determine RP2D. The primary purpose of the phase 2 study was to evaluate the efficacy of ATHENA CAR-T in the above population. ;
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