PD‐L1+ macrophage and tumor cell abundance and proximity to T cells in the pretreatment large B‐cell lymphoma microenvironment impact CD19 CAR‐T cell immunotherapy efficacy
Alexandre V. Hirayama,
Jocelyn H. Wright,
Kimberly S. Smythe
et al.
Abstract:CD19‐targeted chimeric antigen receptor T‐cell (CAR‐T) immunotherapy has transformed the management of relapsed/refractory large B‐cell lymphoma (LBCL), yet durable remissions are observed in less than half of treated patients. The tumor microenvironment (TME) is a key and understudied factor impacting CD19 CAR‐T therapy outcomes. Using NanoString nCounter transcriptome profiling (n = 24) and multiplex immunohistochemistry (mIHC, n = 15), we studied the TME in pretreatment biopsies from patients with LBCL unde… Show more
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