MKI67, together with p16INK4a, are commonly used as immunohistochemical markers in CIN diagnostics, and are associated with the grade of dysplastic changes in the epithelium [6,7], but their ability to predict the outcome of an HPV infection or a CIN lesion is limited [6]. Here, CDKN2A is linked to cervical squamous intraepithelial neoplasia.