EGF and chronic myelogenous leukemia, BCR-ABL1 positive: In addition, the secretion of exosomes containing amphiregulin along with CML LSCs can promote CML LSCs adhesion and their survival by activation the epidermal growth factor (EGFR) pathway in MSCs and increase secretion of IL-8, which stimulates human vascular endothelial cells to enhance the expression of intercellular adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule-1 (VCAM-1) [81, 82].