However, their serum protein profile formed of more than one protein—bone morphogenic protein 2 (BMP2), heat shock 70-kDa protein (HSP70), and chemokine (CXC motive) ligand 10 (CXCL10)—enabled correct assignment to the GBM group from the control group with specificity and sensitivity of 89% and 96%, respectively. Here, BMP2 is linked to glioblastoma.