Figure 4. Bioinformatics analysis of key targeting modules of circITGA7 in glioma. Bioinformatics analysis of the key targeting module of circITGA7 in glioma was carried out by DAVID system. (A) Module 1 is mainly involved in regulating the ERBB signaling (GO: 0038127), (B) module 2 is mainly involved in antigen processing and presentation of exogenous peptide antigen via MHC class I, TAP-independent (GO:0002480), and (C) module 3 is mainly involved in regulation of intracellular protein transport (GO:0006886).