NCAM1 and acute promyelocytic leukemia: RFS and CIR for 8 CD56+APL patients among those with initial WBC counts of 10.0 × 109/L or more were not significantly different from those for 43 CD56−APL patients (62.5% vs. 79.1%, p = 0.200, and 20.9% vs. 37.5%, p = 0.220, respectively).