Zytorvi 240mg Injection contains Toripalimab as its active ingredient. This monoclonal antibody is utilized for treating metastatic or recurrent locally advanced nasopharyngeal carcinoma (NPC). It is given as a first-line treatment alongside cisplatin and gemcitabine for adult patients, and as a standalone therapy for those with recurrent, unresectable, or metastatic NPC that has progressed following platinum-based chemotherapy.
Zytorvi 240mg Injection functions by inhibiting the PD-1 receptor, which prevents its interaction with the PD-L1 and PD-L2 ligands. This mechanism alleviates the suppression on T cells, enhancing their activity and improving immune surveillance, thereby fostering an anti-tumour immune response. In preclinical studies, the blockade of PD-1 showed a decrease in tumour growth.
Common side effects associated with Zytorvi 240mg Injection include nausea and vomiting, sensations of burning or tingling in the feet and toes, reduced appetite, diarrhoea, and constipation. It also carries warnings regarding severe immune-mediated adverse reactions that may impact any organ or tissue and could potentially be life-threatening. Such reactions can manifest at any point during treatment or even after it has been stopped, necessitating vigilant monitoring and prompt medical attention when required.
Additionally, infusion-related reactions like hypersensitivity and anaphylaxis may arise during administration. For patients who have had or are currently undergoing allogeneic hematopoietic stem cell transplantation (HSCT), Zytorvi 240mg Injection may result in serious complications, including graft-versus-host disease (GVHD) and other transplant-related concerns. Furthermore, Zytorvi 240mg Injection is contraindicated in pregnancy due to the risk of harm to the fetus, which may include the possibility of fetal death.