Three alternative transcripts of LMO2 have been identified so far, among which the distal promoter is regarded as an erythroid‐specific promoter due to the direct regulation by GATA‐1.25 To verify the PML‐RARα binding on the distal promoter of LMO2, we performed ChIP‐PCR assays in ZnSO4‐treated PR9 cells and APL patient‐derived NB4 cells using anti‐PML and anti‐RARα antibodies. The gene discussed is LMO2; the disease is acute promyelocytic leukemia.