Abstract
TPS7573 Background: Tisagenlecleucel is an anti-CD19 chimeric antigen receptor-T cell (CAR-T) therapy that was approved for the treatment of pediatric and young adult patients up to 25 years of age with r/r B-cell acute lymphoblastic leukemia in 2017 (Maude et al. NEJM. 2018), as well as for the treatment of adult patients with r/r diffuse large B-cell lymphoma in 2018 (Schuster et al. NEJM. 2018). FL is the second most common non-Hodgkin lymphoma in the Western hemisphere, with limited treatment options in patients refractory to or relapsing after standard therapies. In a phase 2a study of patients with r/r CD19+ lymphomas, 10 of 14 (71%) patients with r/r FL treated with tisagenlecleucel achieved a durable complete remission at a median follow-up of 28.6 months (Schuster et al. NEJM. 2017). Here we introduce ELARA, a phase 2 study evaluating the efficacy and safety of tisagenlecleucel in patients with r/r FL. Methods: ELARA is a phase 2, single-arm, multicenter, open label trial. Eligible patients must be ≥18 years of age, have radiographically measurable grade 1, 2, or 3A r/r FL that is refractory to a second or later line of systemic therapy (including an anti-CD20 antibody and an alkylator), or relapsed within 6 months after completion of a second or later line of systemic therapy, or relapsed during anti-CD20 antibody maintenance (following ≥2 lines of therapy as above) or within 6 months after maintenance completion, or relapsed after autologous hematopoietic stem cell transplant (HSCT). Patients with central nervous system involvement, or those who received prior anti-CD19 therapy, gene therapy, adoptive T-cell therapy, or allogeneic HSCT are not eligible. The primary endpoint of this study is complete response rate based on Lugano classification response criteria. Secondary outcomes include overall response rate, duration of response, overall survival, cellular kinetics, immunogenicity, safety, and patient-reported outcomes. Estimated enrollment for this study is 113 patients. The study is currently open to patient enrollment. Clinical trial information: NCT03568461.
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