The level of TGF-β in the CIN group (6.41 ± 5.20 pg/mL) was higher in comparison to the healthy individuals (5.60 ± 4.83 pg/mL) and highest in patients with cervical carcinoma (18.22 ± 12.18 pg/mL). This evidence concerns the gene TGFB1 and cervical squamous intraepithelial neoplasia.