PTPRG and chronic myelogenous leukemia, BCR-ABL1 positive: While we did not find any significant differences in the expression of PTPRG at the mRNA level in the failed group (WSRT p = 0.312) (Fig. 2c), there were significant differences in the PTPRG protein expression level on neutrophils population in CML of the optimally treated group (Fig. 5c).