There was no statistically significant difference in the serum concentrations of IGF-1 with CA repeats in the promoter region P1 of IGF-1 gene in the L-SIL patients with 19-19 repeats in comparison with the concentration of IGF in the blood serum of patients with 19>19, 19<19 or non-19-19 repeats in the study groups and the control group (Table III). Here, IGF1 is linked to squamous cell intraepithelial neoplasia.