CD79A and cervical intraepithelial neoplasia: In a small pilot study we found that oral HPV-16 IgA, when compared with serum and cervico-vaginal rinse antibodies, most closely correlated with HPV-16 DNA at the cervical lesion of women with cervical intraepithelial neoplasia (CIN) [7] This indicated that oral IgA could be a useful biomarker of mucosal HPV infection at a genital site via the common mucosal immune system [11].