Determinants of resistance to engineered T cell therapies targeting CD19 in large B cell lymphomas.
Cancer Cell
; 41(1): 210-225.e5, 2023 01 09.
Article
in En
| MEDLINE
| ID: mdl-36584673
ABSTRACT
Most relapsed/refractory large B cell lymphoma (r/rLBCL) patients receiving anti-CD19 chimeric antigen receptor (CAR19) T cells relapse. To characterize determinants of resistance, we profiled over 700 longitudinal specimens from two independent cohorts (n = 65 and n = 73) of r/rLBCL patients treated with axicabtagene ciloleucel. A method for simultaneous profiling of circulating tumor DNA (ctDNA), cell-free CAR19 (cfCAR19) retroviral fragments, and cell-free T cell receptor rearrangements (cfTCR) enabled integration of tumor and both engineered and non-engineered T cell effector-mediated factors for assessing treatment failure and predicting outcomes. Alterations in multiple classes of genes are associated with resistance, including B cell identity (PAX5 and IRF8), immune checkpoints (CD274), and those affecting the microenvironment (TMEM30A). Somatic tumor alterations affect CAR19 therapy at multiple levels, including CAR19 T cell expansion, persistence, and tumor microenvironment. Further, CAR19 T cells play a reciprocal role in shaping tumor genotype and phenotype. We envision these findings will facilitate improved chimeric antigen receptor (CAR) T cells and personalized therapeutic approaches.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Lymphoma, Large B-Cell, Diffuse
/
Receptors, Chimeric Antigen
Type of study:
Prognostic_studies
Limits:
Humans
Language:
En
Journal:
Cancer Cell
Journal subject:
NEOPLASIAS
Year:
2023
Document type:
Article
Affiliation country:
United States