Other different 12 precursor proteins, namely, PGK1, ALB, VASP, PRDX5, SBSN, ACTB, CST1, AMY1B, GCA, PTMA, CFL1, and ZG16B, marked all ND GBM saliva pools, highlighting key peptides potentially linked to tumor onset and progression. The gene discussed is SBSN; the disease is glioblastoma.