Moreover, the expression of ITGA6 was higher in serum-derived exosomes from NSCLC patients than that from healthy controls (Fig. 4i, j), and the expression of ITGA6 was also elevated in A549 and H460 cells compared with that in HBE cells (Fig. 4k, l). The gene discussed is ITGA6; the disease is non-small cell lung carcinoma.