COL1A1 and glioblastoma: Strong TGFβ response glioblastomas identified in this study also showed higher expression of many molecules involved in integrin signaling (ACTA2, ACTN1, ACTN4, ARPC4, COL1A1, COL1A2, COL4A1, COL4A2, DIRAS3, FN1, ITGA2, ITGA3, ITGA4, ITGA7, ITGB1, ITGB2, ITGB4, ITGB5, LAMA4, LAMB1, LAMB2, LAMC1, MRCL3, RAP2B, RHOC, RHOJ, RRAS, SHC1, VASP, and ZYX).