The WBP1L gene is a target gene of ETV6, which suppresses its expression.4 In ETV6‐RUNX1+ BCP‐ALL, one allele of ETV6 is inactivated by fusion with RUNX1, while the other is often inactivated as well.26 This could explain the increase of WBP1L expression in ETV6‐RUNX1+ BCP‐ALL. The gene discussed is RUNX1; the disease is acute lymphoblastic leukemia.