Clinical Research Directory

Inclusion Criteria: Participants who meet the following Article 1 and also meet one of Articles 2 to 6 can be enrolled: * Understand, sign, and date the informed consent document to participate in the study * Display one or more symptoms or signs indicative of nasopharyngeal carcinoma * Test positive for EBV antibodies or EBV DNA * Be diagnosed with other head and neck carcinomas * Be diagnosed with malignancies associated with EBV infection * Require differential diagnosis from nasopharyngeal carcinoma during endoscopic or other imaging examinations * Fulfill any additional conditions deemed appropriate by the investigator for inclusion in this study Exclusion Criteria: * Have been diagnosed with nasopharyngeal carcinoma and have undergone treatment * Experience relapse or metastasis of nasopharyngeal carcinoma following treatment * Have unsuccessful nasopharyngeal swab collections * Present any other conditions considered by the investigator as unsuitable for participation in this trial