In Fig. 5a–c, we have compared side-by-side the mean fluorescence intensity (MFI) measured in the same cell populations of a series of normal individuals and CML patients (see Additional file 1: Table S1 for details) using TPγ B9-2 and chPTPRG antibodies and confirmed PTPRG downregulation in monocytes (p = 0.0017) and PMN (p < 0.0001) in CML patients in comparison with healthy controls (Fig. 5a–c). Here, PTPRG is linked to chronic myelogenous leukemia, BCR-ABL1 positive.