In this study, we identified crucial proteins with PDB IDs-2YEX (Chk1 kinase), 4HG7 (MDM2 E3 ubiquitin ligase), 4JSX (mTOR kinase domain), and 5DS3 (PARP-1 DNA repair enzyme)-involved in ageing-related cancers and performed docking studies with Extra Precision (XP) followed by MM-GBSA-based pose processing against the FDA-approved DrugBank library (LigPrep: 10907 compounds). The gene discussed is PARP1; the disease is cancer.