ITGB1 and small cell lung carcinoma: mRNA gene expression data from 64 SCLC cell lines (15) revealed that ITGB1 expression significantly correlated with “mesenchymal” gene expression compared with “epithelial” gene expression (Figure 1, D and E, and Supplemental Table 1) and with “migration” gene expression (Supplemental Figure 2 and Supplemental Table 1).