Figure 2. Comparison of molecular MRD sensitivity in bone marrow aspirates and peripheral blood.
In 37 paired bone marrow (BM) aspirate and peripheral blood (PB) samples, MRD quantification was concordantly negative (0) in 18 (49%). MRD quantification was discordantly positive in BM while negative in PB in 4 (11%), and the median disease burden in these BM samples was 5.5×10−6 (range 4.5×10−6 – 1.7×10−5). When MRD was detected in both sample sources, disease burden was higher (median 8.4-fold) in BM than PB (A). MRD quantification in all samples in this study is demonstrated (B).
