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  • Title: [Prognostic significance of serum anti-Epstein-Barr virus antibodies in nasopharyngeal carcinoma].
    Author: Cai YL, Li J, Lu AY, Zhong WM, Zheng YM, Gao JQ, Zeng H, Chen WS, Liang W, Tang MZ.
    Journal: Zhonghua Shi Yan He Lin Chuang Bing Du Xue Za Zhi; 2013 Apr; 27(2):119-22. PubMed ID: 24044217.
    Abstract:
    OBJECTIVE: This study was aimed to investigate the association between serum against Epstein-Barr virus (EBV) antibodies levels and nasopharyngeal carcinoma (NPC) patients' prognosis. METHODS: Blood samples from 140 primary NPC patients without metastasis were collected before and after treatment. The titers of VCA/IgA and EA/IgA were detected by immunoenzyme assay, and the levels of NA1/IgA and Rta/IgG were detected by enzyme-linked immunosorbent assay (ELISA). All patients received consequent follow-up and long-term efficacy and survival assessment. RESULTS: Post-treatment serum levels of VCA/IgA, EA/IgA, NA1/IgA and Rta/IgG in NPC patients significantly decreased than those before treatment, while had significantly higher than those in control individuals (P < 0.05). Patients in remission had significantly lower pre-treatment serum levels of VCA/IgA and EA/IgA than patients with progression (P < 0.05). None of serum levels of VCA/IgA, EA/IgA, NA1/IgA and Rta/IgG was associated with the 3-year overall survival (P > 0.05). The progression-free survivals were significantly lower in patients with higher pre-treatment VCA/IgA (> or = 1 : 320) and EA/IgA (> or = 1:80) levels than in those with lower VCA/IgA ( < 1 : 320) and EA/IgA (< 1 : 80) levels, respectively (61.8% vs. 86.5% , 61.3% vs. 86.5%, P < 0.001). Cox regression model analysis demonstrated that pre-treatment serum VCA/IgA level was an independent risk factor for progression-free survival (HR = 3.80, P = 0.001). CONCLUSION: Anti-EBV VCA/IgA and EA/IgA might provide information regarding the prognosis of NPC patients.
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