BCL9 is associated with B-cell acute lymphoblastic leukemia. It may be a target of translocation in B-cell malignancies with abnormalities of 1q21. Its function is unknown. The overexpression of BCL9 may be of pathogenic significance in B-cell malignancies.,BCL9,LGS,Bcl9,Epigenetics & Nuclear Signaling,Transcription Factors,Cancer,Cell Biology & Developmental Biology,Wnt/β-Catenin Signaling Pathway,Stem Cells,BCL9