Predictive value of serum glutathione S-transferase (GST-â), P-glycoprotein (PGP), P53, KI-67 in breast cancer: A systematic review and meta-analysis

The elevated expression of drug-resistant proteins GST-â, PGP P53, and Ki-67 in TNBC suggests that these biomarkers are closely associated with chemotherapy resistance. Monitoring their levels during treatment may help guide more effective clinical strategies for managing TNBC. The findings emphasise the need for personalised therapeutic approaches based on protein expression profiles to improve clinical outcomes for TNBC patients.