A previous study described expression of endocan in AML and ALL blasts [35], but endocan did not reach quantifiable levels in previous proteomic studies of AML secretome, AML cell lysates, MSC secretome, MSC lysates, osteoblast secretome, or osteoblast lysates [36,37,38,39,40,41]. This evidence concerns the gene ESM1 and acute lymphoblastic leukemia.