IRF2BP2 and cancer: Whole transcriptome sequencing identified a novel IRF2BP2‐caudal type homeobox 1 fusion protein in mesenchymal chondrosarcoma and an IRF2BP2‐retinoic acid receptor alpha fusion protein in acute promyelocytic leukaemia.11, 12 These studies suggest that IRF2BP2 may play a role in tumorigenesis and cancer progression.