ITGA5 and leukemia: Result showed that the α5 subunit inhibitory antibody (CD49e) was the only one that significantly inhibited the adhesion of Ph+ leukemia cells to fibronectin with adhesion percentage of 6.6 ± 3.8 compared with control IgG 44.8 ± 7.9, p < 0.01 (Figure 2A).