CCND2 and chronic myelogenous leukemia, BCR-ABL1 positive: The expression of CD93 is constant and selective in the subset of CML LSCs, which indicated self-renewal and proliferation capacity of this primitive cell subpopulation by the expression of selected genes such as ID2, MYB, PAK2, MEIS1, REL, CK1, CDK4, and CCND2. Furthermore, CD93, as a major integrin α5β1 mediator, along with CD44 can bind to fibronectin [45, 46] and might have a role in LSC adherence within the BM niche [37, 44].