Methodological approach to minimal residual disease detection by flow cytometry in adult B-lineage acute lymphoblastic leukemia

Dipartimento di Medicina Clinica e Sperimentale, Sezione di Ematologia, Università di Verona.
Haematologica (Impact Factor: 5.81). 09/2006; 91(8):1109-12.
Source: PubMed


A flow cytometric approach to minimal residual disease (MRD) monitoring useful in childhood B-lineage acute lymphoblastic leukemia (ALL) is discussed here in the context of ALL in adults. Of 64 leukemia samples analyzed, 95.3% had at least one abnormal phenotype (57.3% had two or more) as compared to physiologic B-cell precursors in adult bone marrow. The method was sensitive enough to detect one leukemic cell among 10,000 normal cells in 16/19 experiments (84.2%). Blast phenotypes were stable in culture and at relapse, and were useful for MRD monitoring in patients. Marker combinations for childhood ALL are also applicable to adult cases.

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