Comparison of MRD results obtained by sequencing, flow cytometry, and ASO-PCR. MRD results obtained using the sequencing method were compared with flow cytometry results for 105 ALL patients (left) and with ASO-PCR results for 106 ALL patients (right). In each panel, the numbers of concordant measurements are shown in the lower left and upper right and the number of discordant measurements are shown in the upper left and lower right.