Δευτέρα 22 Ιανουαρίου 2018

Beyond Concurrent Chemoradiation: The Emerging Role of PD-1/PD-L1 Inhibitors in Stage III Lung Cancer

Concurrent chemoradiation (cCRT) with platinum-based chemotherapy is standard of care therapy for patients with Stage III unresectable non-small cell lung cancer (NSCLC). Though potentially curative, five-year overall survival has hovered around 20%, despite extensive efforts to improve outcomes with increasing doses of conformal radiation and intensification of systemic therapy with either induction or consolidation chemotherapy. PD-1/PD-L1 immune checkpoint inhibitors have demonstrated unprecedented efficacy in patients with Stage IV NSCLC.  Additionally, preclinical and early clinical evidence suggests that chemotherapy and radiation may work synergistically with anti-PD-1/PD-L1 therapy to promote anti-tumor immunity, which has led to the initiation of clinical trials testing these drugs in patients with Stage III NSCLC. A preliminary report of a randomized phase III trial, the PACIFIC trial, demonstrated an impressive increase in median progression-free survival with consolidative durvalumab, a PD-L1 inhibitor, compared to observation after cCRT. Here, we discuss the clinical and translational implications of integrating PD-1/PD-L1 inhibitors in the management of patients with unresectable Stage III NSCLC.



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