A single‑cell atlas of multiple myeloma defines malignant archetypes and proliferative states

Rákkutatás · Multiple myeloma

FCRL2‑targeted chimeric antigen receptor T cells demonstrated antigen‑specific activity in vitro and survival benefit in vivo.

Multiple myeloma (MM) is a plasma‑cell malignancy with extensive genomic and transcriptional heterogeneity, limiting disease classification and precision therapy. Here we generated a clinically annotated, population‑scale, single‑cell atlas of MM from 341 individuals spanning the disease and treatment continuum. We identified five recurrent malignant transcriptional archetypes and an orthogonal proliferative program associated with genomic features, therapeutic resistance and clinical outcomes. Validation in the independent CoMMpass cohort demonstrated robustness, prognostic relevance and portability across platforms. We developed a single‑cell, target‑discovery pipeline prioritizing malignant enrichment, cell‑type specificity and tissue restriction, identifying FCRL2 as a plasma‑restricted or B cell‑lineage‑restricted surface target expressed by malignant plasma cells. FCRL2‑targeted chimeric antigen receptor T cells demonstrated antigen‑specific activity in vitro and survival benefit in vivo. Together, these data provide a clinically actionable blueprint for patient stratification and precision target nomination in plasma‑cell malignancies.

The study identifies a novel, plasma‑cell‑restricted surface protein, FCRL2, as a therapeutic target and demonstrates that CAR T cells directed against FCRL2 can kill malignant plasma cells and improve survival in animal models, offering a new avenue for precision therapy in multiple myeloma.

Bizonyítékszint: Feltételezés / hírjelzés. Nincs önálló tudományos bizonyíték.

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