Efficacy, safety, and cost-minimization analysis of axicabtagene ciloleucel and tisagenlecleucel CAR T-Cell therapies for treatment of relapsed or refractory follicular lymphoma.

Abstract

Axicabtagene ciloleucel (axi-cel) and tisagenlecleucel (tisa-cel) are chimeric antigen receptor (CAR) T-cell therapies used to treat adult patients with relapsed or refractory follicular lymphoma (rrFL) after two or more lines of systemic therapy. In the absence of head-to-head clinical trials, this study aimed to compare the efficacy, safety, and cost of axi-cel and tisa-cel in the treatment of rrFL after at least two lines of treatment. Overall response rate (ORR) and safety signals were compared using reporting odds ratios (RORs) with 95% confidence intervals (CIs) at p < 0.05. Progression-free survival (PFS), duration of response (DoR), and overall survival (OS) were compared using the Kaplan?Meier method with a log-rank test. Cost and cost-minimization analyses of drug acquisition, drug administration, serious adverse events (AEs), and relapsed management were calculated. Costs were extracted from the IBM-Micromedex Red Book, Centers for Medicare and Medicaid Services, and existing literature. Statistical analyses were conducted using Microsoft Excel and R version 4.0.5. No statistically significant differences were observed between axi-cel and tisa-cel in terms of ORR, DoR, and OS (p > 0.05). PFS was significantly better with tisa-cel (p < 0.05). Axi-cel was significantly associated with higher incidences of CRS, neurologic events, and grade 3-4 AEs than tisa-cel (ROR > 1, p < 0.05). Axi-cel and tisa-cel cost $512,021 and $450,885 per patient, respectively, resulting in savings of US$61,136 with tisa-cel over axi-cel. Tisa-cel appears to have a better safety profile, fewer serious AEs, lower mortality rate, and lower cost than axi-cel.