NCAM1 and acute myeloid leukemia: The phenotypic characterization of the mononuclear cells revealed that the expression of CD56 and CD16 was reduced in the PB and BM specimens from patients with AML in comparison to that in the PB of HDs (for CD56: p < 0.0001, p = 0.01 and for CD16: p < 0.0001, p = 0.0015; Figure 1B).