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Pathology ; 55(1): 71-76, 2023 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-36153154

RESUMEN

FLT3 internal tandem duplication (ITD) quantitation is key to prognostication in acute myeloid leukaemia (AML). One potential source of variability in the allelic ratio (AR) is the number of polymerase chain reaction (PCR) cycles used. Using 30 archived samples of varying ITD lengths and AR, we compared two FLT3-ITD assays (Huang and RATIFY), evaluated the effect of PCR cycle number on each assay, and examined the potential clinical consequences. Huang and RATIFY assays at 35 and 27 PCR cycles, respectively, were highly concordant. A progressive decrease in AR (median 47%) was observed with the RATIFY assay when the PCR cycles were increased from 27 to 35 cycles, potentially impacting risk categorisation in 29% of patients. In contrast, minimal change in AR was observed with the Huang assay. Hence, both FLT3-ITD assays were almost identical using respective standard conditions, but the effect of PCR cycle number is assay-dependent, which may impact risk stratification in AML.


Asunto(s)
Leucemia Mieloide Aguda , Humanos , Reacción en Cadena de la Polimerasa , Leucemia Mieloide Aguda/diagnóstico , Leucemia Mieloide Aguda/genética , Tirosina Quinasa 3 Similar a fms/genética , Mutación , Pronóstico
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