The presence of SDF1α, an important chemokine in T cell adhesion and migration and in T-ALL progression [27,28], had no effect on Jurkat and HSB-2 cell adhesion to VCAM-1 but increased by twofold the adhesion of both cells lines to fibronectin (Figure 2B). The gene discussed is CXCL12; the disease is acute lymphoblastic leukemia.