Overall, similar frequencies of altered neutrophil phenotypes were detected for the different markers investigated among BCP-ALL patients carrying distinct cytogenetic subtypes of the disease, except for a slightly lower frequency of cases showing (mature/maturing) neutrophils with a CD10− and CD33low phenotype among patients with MLL gene rearrangements - 27% vs 58% (p = 0.06), and 9% vs. 33% (p = 0.05) respectively - (Table 2). Here, KMT2A is linked to acute lymphoblastic leukemia.