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Clinical trial data of Anti-PD-1/PD-L1 therapy for recurrent or metastatic nasopharyngeal Carcinoma: A review

Journal

CANCER TREATMENT REVIEWS
Volume 109, Issue -, Pages -

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.ctrv.2022.102428

Keywords

Nasopharyngeal carcinoma; Programmed cell death receptor-1; Immune checkpoint inhibitor

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PD-1 therapy has shown clinical activity in RM-NPC, with significant improvements in PFS observed in first-line setting trials. Whether combination chemoimmunotherapy or sequential chemotherapy followed by immunotherapy is more effective remains uncertain.
Importance: Anti-programmed cell death receptor-1 (PD-1) therapy is standard of care for incurable recurrent or metastatic non-nasopharyngeal head and neck cancer. In contrast, there are no regulatory agency-approved anti-PD-1 agents indicated for the treatment of recurrent or metastatic nasopharyngeal carcinomas (RM-NPC) in the Western hemisphere, and no standard treatment option exists beyond first-line chemotherapy for RM-NPC. The pace of development of novel systemic therapy regimens for RM-NPC has been slow compared to many other advanced tumor types, leaving an unmet clinical need for these patients with a poor prognosis. Observations: Recent clinical trials have documented the clinical activity of anti-PD-1 therapy in RM-NPC. In particular, randomized clinical trials in the first-line setting have demonstrated significant improvements in progression-free survival (PFS) with the addition of anti-PD-1 therapy to standard chemotherapy. Whether the observed PFS benefits require combination chemoimmunotherapy or can be achieved with chemotherapy fol-lowed by crossover to immunotherapy upon progression remains unknown. Ongoing clinical trials are exploring novel anti-PD-1 therapy-based combinations, which may further solidify a role for these agents in RM-NPC. Conclusions and Relevance: Among patients with RM-NPC, anti-PD-1 therapy added to first-line standard-of-care gemcitabine plus cisplatin provides significantly better efficacy outcomes compared to chemotherapy alone, and anti-PD-1 monotherapy appears to have comparable clinical activity and better tolerability than chemotherapy in previously treated disease. Thus, anti-PD-1 therapy is poised to advance standard of care for the treatment of RM-NPC.

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