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MiR-9 and miR-21 as prognostic biomarkers for recurrence in papillary thyroid cancer
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MiR-9 and miR-21 as prognostic biomarkers for recurrence in papillary thyroid cancer
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MiR-9 and miR-21 as prognostic biomarkers for recurrence in papillary thyroid cancer
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Journal Article
MiR-9 and miR-21 as prognostic biomarkers for recurrence in papillary thyroid cancer
2015
Overview
Despite low mortality rates, nodal recurrence in papillary thyroid carcinoma occurs in up to 20 % of patients. Emerging evidences indicate that dysregulated microRNAs are implicated in the process of metastasis. In the present study, we investigated whether miR-9, miR-10b, miR-21 and miR-146b levels are predictive of papillary thyroid carcinoma recurrence. Using macro-dissection followed by quantitative real-time PCR, we measured miR-9, miR-10b, miR-21 and miR-146b expression levels in formalin-fixed, paraffin-embedded samples of 66 patients with papillary thyroid carcinoma categorized into two groups: the recurrent group (n = 19) and the non-recurrent group (n = 47). All patients underwent total thyroidectomy and were followed for at least 120 months after surgery to be considered recurrence-free. Univariate and multivariate analysis were performed using the Cox proportional hazard model in order to identify associations between multiple clinical variables and microRNA expression levels and papillary thyroid carcinoma recurrence. MiR-9 and miR-21 expression levels were found to be significant prognostic factors for recurrence in patients with papillary thyroid carcinoma (HR = 1.48; 95 % CI 1.24–1.77, p < 0.001; and HR = 1.52; 95 % CI 1.18–1.94, p = 0.001; respectively). Multivariate analysis involving the expression level of miR-9 and miR-21 and various clinical parameters identified the expression of these microRNAs as independent prognostic factors for papillary thyroid cancer patients. In conclusion, our results support the potential clinical value of miR-9 and miR-21 as prognostic biomarkers for recurrence in papillary thyroid carcinoma.
Publisher
Springer Netherlands,Springer Nature B.V
Subject
/ Aged
/ Biomarkers, Tumor - genetics
/ Biomedical and Life Sciences
/ Carcinoma, Papillary - genetics
/ Carcinoma, Papillary - secondary
/ Carcinoma, Papillary - surgery
/ Female
/ Gene Expression Regulation, Neoplastic
/ Humans
/ Male
/ Neoplasm Recurrence, Local - genetics
/ Neoplasm Recurrence, Local - pathology
/ Neoplasm Recurrence, Local - surgery
/ Oligonucleotide Array Sequence Analysis
/ Oncology
/ Real-Time Polymerase Chain Reaction
/ Thyroid Neoplasms - genetics
