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Clinical Trial Summary

The purpose of this study is to explore the efficacy and safety of a combination of GP chemotherapy and tislelizumab in neoadjuvant therapy combined with tislelizumab in adjuvant therapy of locoregionally advanced nasopharyngeal carcinoma patients.

Clinical Trial Description

Platinum-based concurrent chemoradiotherapy is the standard of care for patients with locoregionally advanced nasopharyngeal carcinoma(NPC). Gemcitabine plus cisplatin(GP) has been demonstrated an effective chemotherapy regimen for NPC patients in previous studies. The results of GP combined with concurrent chemoradiotherapy in the treatment of locoregionally advanced nasopharyngeal carcinoma showed 10% of locoregionally advanced NPC patients had complete response after three cycles of GP neoadjuvant chemotherapy, and GP neoadjuvant chemotherapy added to chemoradiotherapy significantly improved recurrence-free survival (85.3% vs 76.5%) and overall survival (94.6% vs 90.3%) among locoregionally advanced NPC patients , as compared with chemoradiotherapy alone. Therefore, GP regimen has been established as the highest level of evidence-based neoadjuvant chemotherapy in the 2020 National Comprehensive Cancer Network (NCCN) guidelines. Recently, immune checkpoint inhibitors, such as anti-programmed cell death-1 (PD-1)monoclonal antibody has shown promising efficacy in the treatment of tumor patients. Clinical trials have shown objective response rates of 20.5%-34% in patients with recurrent or metastatic NPC patients receiving anti PD-1 monoclonal antibody immunotherapy including pembrolizumab, nivolumab, camrelizumab, and toripalimab. The current NCCN guidelines recommend anti PD-1 monoclonal antibody as a second-line treatment for recurrent or metastatic NPC. More and more evidence show that immunotherapy combined with chemotherapy has a synergistic effect in treating tumors. GP chemotherapy combined with anti PD-1 antibody has achieved the initial effect in NPC. Phase 1 trials have shown the combination of camrelizumab plus GP chemotherapy in recurrent or metastatic NPC led to a proportion of 91% patients achieving an objective response. In addition, previous studeis showed that PD-1 antibody adjuvant therapy had good feasibility and effectiveness in the treatment of nasopharyngeal carcinoma. Tislelizumab, approved by the National Medical Products Administration in China, is an anti-PD-1 monoclonal IgG4 antibody with higher affinity to PD-1 than pembrolizumab and nivolumab and was engineered to minimize binding to FcγR on macrophages in order to abrogate antibody-dependent phagocytosis, a mechanism of T-cell clearance and potential resistance to anti-PD-1 therapy. Multiple clinical trials have shown strong anti-neoplastic activity of tislelizumab in various tumors including NPC. Clinical trial has shown an objective response rates of 43% in patients with recurrent metastatic nasopharyngeal carcinoma treated with tirelizumab, which is superior to other anti PD-1 monoclonal antibodys. So we hypothesize that GP neoadjuvant chemotherapy combined with tislelizumab and tislelizumab adjuvant therapy could further improve survival of patients with locaregionally advanced NPC. Based on this, this study aims to evaluate the efficacy and safety of gemcitabine plus cisplatin chemotherapy combined with tislelizumab neoadjuvant therapy, followed by cisplatin based concurrent chemoradiotherapy, then followed by tislelizumab adjuvant therapy in the patients with locoregionally advanced nasopharyngeal carcinoma, to provide new evidence for individualized comprehensive treatment in NPC. ;

Study Design

Related Conditions & MeSH terms

NCT number NCT05211232
Study type Interventional
Source Sun Yat-sen University
Contact haiqiang Mai, MD
Phone 8613570027338
Status Not yet recruiting
Phase Phase 3
Start date March 25, 2022
Completion date March 25, 2027

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