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publication

Single cell genotypic and phenotypic analysis of measurable residual disease in acute myeloid leukemia


Troy T. Robinson et al.
Abstract

Measurable residual disease (MRD), defined as the population of cancer cells which persists following therapy, serves as the critical reservoir for disease relapse in acute myeloid leukemia (AML) and other malignancies. Understanding the biology enabling MRD clones to resist therapy is necessary to guide the development of more effective curative treatments. Discriminating between residual leukemic clones, preleukemic clones and normal precursors remains a challenge with current MRD tools. Herein, we developed a single cell (sc) MRD assay by combining flow cytometric enrichment of the targeted precursor/blast population with integrated scDNA sequencing and immunophenotyping. Our scMRD assay shows high sensitivity of approximately 0.01%, deconvolutes clonal architecture and provides clone-specific immunophenotypic data. In summary, our scMRD assay enhances MRD detection and simultaneously illuminates the clonal architecture of clonal hematopoiesis/pre-leukemic and leukemic cells surviving AML therapy.



Authors

Troy T. Robinson



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