News Related to TP53

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Osimertinib-Chemotherapy Combo Shows Major Benefit in High-Risk EGFR/TP53 NSCLC

Mar 28, 2026

The phase III TOP study shows osimertinib plus chemotherapy more than doubles progression-free survival to 34 months versus 15.6 months with osimertinib alone in EGFR/TP53 mutant NSCLC. The combination achieved an 82.9% response rate and represents a new strategy for this high-risk subgroup. Research continues into resistance mechanisms, including cancer-associated fibroblasts' role in promoting osimertinib resistance.