Two independent microarray studies indicated that TNFAIP2 is a potential retinoic acid target gene.15, 16 All‐trans‐retinoic acid (ATRA) strongly upregulates TNFAIP2 in PML‐RARα‐positive myeloid leukaemia cells or lymphoma cells. The gene discussed is TNFAIP2; the disease is lymphoma.