Prognostic possibilities of molecular genetic testing for assessing the risk of recurrence of papillary thyroid cancer in children
The assessment of aggressiveness and risk of death in papillary thyroid cancer in children is currently based on clinical criteria. To ensure a more accurate risk stratification, new criteria and various molecular genetic markers are constantly being sought. The article studied the dependence of the clinical and pathological manifestations of papillary thyroid cancer in children on the level of expression of various microRNAs and the presence of the BRAF mutation. It was found that the BRAF mutation was present in 20.4% of cases, while the dependence of the clinical behavior of cancer on the BRAF mutation was not established. Of the 14 microRNAs studied, statistical differences were obtained for oncogenic miR-146b, -221, -31, and oncosuppressive miR-144, which correlated with signs such as extrathyroid tumor growth, multi-focus, and metastasis to the neck lymph nodes.