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Updated: May 4, 2026

Intracellular Phosphoflow Cytometry of Acute Myeloid Leukemia Patient-Derived Xenotransplants
Published on: June 6, 2025
Personalized therapy for acute myeloid leukemia.
Christopher S Hourigan1, Judith E Karp
11Myeloid Malignancies Section, Hematology Branch, National Heart, Lung, and Blood Institute, Bethesda, and 2The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, Maryland.
Screening patient-specific drug sensitivity ex vivo can guide personalized targeted therapy. Iterative genomic and drug susceptibility analysis in acute myeloid leukemia trials may reveal resistance mechanisms and new therapeutic targets.
Area of Science:
- Oncology
- Pharmacology
- Genomics
Background:
- Personalized targeted therapy requires identifying effective drug candidates for individual patients.
- Acute myeloid leukemia (AML) presents challenges in treatment due to evolving resistance and clonal heterogeneity.
Purpose of the Study:
- To evaluate the utility of patient-specific ex vivo drug screening for personalized targeted therapy in AML.
- To characterize mechanisms of drug resistance and clonal evolution during targeted therapy using sequential analysis.
Main Methods:
- Performing ex vivo drug sensitivity and resistance screening tailored to individual patients.
- Iteratively characterizing genomic profiles and drug susceptibility at multiple time points during clinical trials.
Main Results:
- Ex vivo screening can identify rational drug candidates for personalized treatment strategies.
- Sequential genomic and drug susceptibility profiling aids in understanding resistance development and clonal dynamics.
Conclusions:
- Patient-specific ex vivo drug screening is a viable approach for personalized medicine in AML.
- Iterative characterization during clinical trials can uncover novel therapeutic targets and drug combinations for overcoming resistance.
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