COL18A1 and nasopharyngeal carcinoma: The Chinese Society of Clinical Oncology (CSCO) clinical guidelines for the diagnosis and treatment of nasopharyngeal carcinoma (2021) adds grade I recommendations in first-line treatment for recurrent/metastatic nasopharyngeal cancer: cisplatin +5-fluorouracil (5-FU) + local radiotherapy and new recommendation for grade III: cisplatin + gemcitabine + endostatin (recombinant human endostatin) (4).