CD79A and nasopharyngeal carcinoma: However, conclusions need to be taken with caution given the lack of similar associations between herbal tea and serological antibodies of VCA‐IgA, EBNA1‐IgA, and Zta‐IgA in healthy population in our previous studies.21, 22 Our results are somewhat consistent with an early study conducted by Hildesheim et al28 in the Filipino population, wherein herbal medicine use was found to be correlated with elevated anti‐EBV antibody titers among NPC cases but not among control subjects.