To understand the role of the Wnt/β‐catenin signaling pathway in tumorigenesis, we explored novel target genes of the Wnt/β‐catenin signaling pathway using the CML cell line HAP1, which has a haploid genome and the BCR‐ABL fusion gene. This evidence concerns the gene BCR and chronic myelogenous leukemia, BCR-ABL1 positive.