We reported a lineage differentiation profile similar to previous studies which reported that CD56 (26%–41%) and CD7 (21–42%) were the most commonly expressed lymphoid markers in AML, whereas the incidence of positivity for the B‐cell‐associated markers (approximately 10% for CD19) was low.19, 20, 21. The gene discussed is NCAM1; the disease is acute myeloid leukemia.