Anti-CD19 chimeric antigen receptor T-cell therapy in older patients with relapsed or refractory large B-cell lymphoma: A multicenter study

Am J Hematol. 2024 Sep;99(9):1712-1720. doi: 10.1002/ajh.27381. Epub 2024 Jun 4.

Abstract

Chimeric antigen receptor T-cell (CAR-T) therapy, despite being a potentially curative therapy in relapsed or refractory (RR) large B-cell lymphoma (LBCL), remains underutilized in older patients due to limited clinical data. We therefore studied the safety and efficacy of CAR-T therapy in older patients with RR LBCL in the real-world setting. Patients aged ≥65 years with RR LBCL, treated with anti-CD19 CAR-T therapy at 7 US institutions were included in this multicenter, retrospective, observational study. In total, 226 patients were included. Median age at infusion was 71 years (range 65-89). Best objective and complete response rates were 86% and 62%, respectively. Median follow-up after infusion was 18.3 months. The median progression-free survival (PFS) was 6.9 months, with 6- and 12-month PFS estimates of 54% and 44%, respectively. The nonrelapse mortality (NRM) rate was 10.9% at day 180, primarily due to infections, and not impacted by the age groups. Grade ≥3 cytokine release syndrome and neurotoxicity occurred in 7% and 26%, respectively. In univariate analysis, no significant difference in PFS was seen regardless of the age groups or CAR-T type, whereas ECOG PS ≥2, elevated LDH, bulky disease, advanced stage, extranodal involvement, the need for bridging therapy, and prior bendamustine exposure were associated with shorter PFS. These findings support the use of CAR-T in older patients, including those aged ≥80 years. The age at CAR-T therapy did not influence safety, survival, and NRM outcomes. Older patients should not be excluded from receiving CAR-T therapy solely based on their chronological age.

Publication types

  • Multicenter Study
  • Observational Study

MeSH terms

  • Aged
  • Aged, 80 and over
  • Antigens, CD19* / immunology
  • Antigens, CD19* / therapeutic use
  • Female
  • Humans
  • Immunotherapy, Adoptive* / adverse effects
  • Lymphoma, Large B-Cell, Diffuse* / mortality
  • Lymphoma, Large B-Cell, Diffuse* / therapy
  • Male
  • Receptors, Chimeric Antigen / therapeutic use
  • Retrospective Studies

Substances

  • Antigens, CD19
  • Receptors, Chimeric Antigen