Comparison and Strategy Optimization of Plasma EBV DNA and P85-Ab with VCA/EBNA1-IgA for Screening Nasopharyngeal Carcinoma in High-risk Areas

Recruiting now · Not applicable

Conditions studied: Nasopharyngeal Carcinoma (NPC), Screening, Epstein Barr Virus

In brief

This study is a prospective, self-controlled, multicenter clinical trial. All participants will be tested for Epstein-Barr virus (EBV) associated biomarkers, including the two-antibody method (VCA-IgA and EBNA1-IgA), BNLF2b total antibodies (P85-Ab), and plasma EBV DNA. Furthermore, novel screening biomarkers, such as next-generation sequencing for EBV and castoff cells using nasopharyngeal swabs, will be explored. First, it aims to investigate whether plasma EBV DNA testing or the P85-Ab testing can achieve higher sensitivity than the current standard two-antibody method testing while maintaining specificity in NPC screening, thereby identifying the optimal initial NPC screening strategy. Based on the determined optimal initial screening strategy, the study will validate the proposed two-step method (subjects first undergo two-antibody method testing and P85-Ab testing; those positive for either one biomarker above proceed to plasma EBV DNA testing; subjects positive in both steps are defined as high-risk and receive endoscopic examinations with or without biopsy) compared with the single-step method (subjects simultaneously undergo two-antibody method testing, P85-Ab testing, and plasma EBV DNA testing; subjects with any positive biomarker undergo endoscopic examinations with or without biopsy) and each single screening testing. The aim is to determine whether two-step method can further improve the positive predictive value (PPV) while maintaining non-inferior sensitivity, thereby enhancing screening efficiency, reducing the rate of invasive procedures (such as endoscopic biopsies), and lowering medical costs and insurance burdens.

Key facts

Study ID

NCT06870435

Run by

Ming-Yuan Chen

People needed

68649

Starts

2025-01-24

Expected to finish

2035-12-31

Last updated by the study team

2025-03-11

Who can join

Age: 30 and older, up to 69. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• Voluntarily signed informed consent.
• Age between 30 and 69 years at the time of screening.
• Residents of Guangdong Province or Guangxi Province.
• Able to cooperate with long-term follow-up.

You may not qualify if…

• Severe medical comorbidities, significant organ (heart, lung, liver, kidney) dysfunction, or psychiatric disorders.
• Severe autoimmune diseases or immunodeficiency.
• History of or current malignant tumors.
• Inability to cooperate with the study due to psychological, social, familial, or geographical reasons.

Where it is running

• The Fifth Affiliated Hospital of Sun Yat-sen University — Zhuhai, Guangdong, China (enrolling)

Full record on ClinicalTrials.gov

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