Significant differences were found between FAB subtypes and CD300A‐CD300LF expression status: high expression of CD300A‐CD300LF were significantly more frequent in AML with myelomonocytic (M4) and monocytic (M5) morphology, whereas the M3 subtype was exclusively observed in patients with low CD300A‐CD300LF expression (Figure 6A). Here, CD300LF is linked to acute myeloid leukemia.