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Objective:   To evaluate serum concentrations of mannose-binding lectin (MBL) in women presenting with different human papillomavirus (HPV)-associated cervical lesions.   Subjects and Methods:   A total of 364 women, who underwent screening for cervical cancer or treatment at the Erasto Gaertner Cancer Hospital (HEG), Curitiba, Brazil, were enrolled in the study. Based on the latest cervical colposcopy-guided biopsy results, the women were divided into 4 groups: cervical intraepithelial neoplasia CIN-I ( n  = 54), CIN-II ( n  = 72), CIN-III ( n  = 145), and invasive cancer ( n  = 93). A time-resolved immunofluorometric assay was used to measure the MBL concentrations in serum. The statistical analysis was done using GraphPad Prism 6.0. Comparisons were performed by Kruskal-Wallis and Mann-Whitney tests and analyzed by χ<sup>2</sup> test; continuous variables are presented as medians and categorical variables as frequencies.   Results:   The median MBL concentrations in decreasing order were as follows: invasive cancer: 1,452 ng/mL, CIN-I: 1,324 ng/mL, CIN-II: 1,104 ng/mL, and CIN-III 1,098 ng/mL. However, no statistical significance was found among the 4 groups with HPV-associated lesions ( p  = 0.11). Equally, the MBL levels did not show a significant association between the age of the patients and the severity of the cervical lesions ( p  = 0.68). No statistical significance was found in the median values of MBL or in the status of MBL deficient (<100 ng/mL) and high producers (>1,000 ng/mL) among the women in each group ( p  = 0.77).   Conclusion:   In this study, there was no statistically significant difference in MBL serum levels among the groups with CIN. Hence MBL serum concentration appeared not to have influenced the progression of HPV-related preinvasive cervical lesions into invasive cancer.

Mannose-Binding Lectin Does Not Act as a Biomarker for the Progression of Preinvasive Lesions of Invasive Cervical Cancer