PTPRC and myelodysplastic syndrome: The mean neutrophil score type 1 obtained in LR-MDS patients was of 4 ± 2, ranging from “0” to 8 (total score rank = 59), while all controls had a score of 1 or lower (total score rank = 1), with only 1 case having a score = 1, corresponding to a normal individual whose neutrophils had dimmer CD45 expression (Table 6).