AI Article Synopsis
- Papillary thyroid carcinoma (PTC) is the most common type of thyroid cancer, and this study examined the potential of two microRNAs, miR-146a-5p and miR-221-3p, as biomarkers for diagnosing and monitoring PTC.
- The researchers conducted an observational study with PTC patients and healthy controls, analyzing levels of these microRNAs through digital PCR before and after surgery.
- Results showed that both microRNAs are effective in differentiating PTC patients from healthy individuals, with specific fold changes indicating disease progression, making them useful for ongoing patient monitoring.
Article Abstract
Purpose: Papillary thyroid carcinoma (PTC) is the most common malignant thyroid neoplasm, accounting for approximately 85% of all follicular cell-derived thyroid nodules. This study aimed to assess the diagnostic potential of circulating microRNA-146a-5p and microRNA-221-3p as biomarkers for PTC and their usefulness in monitoring disease progression during patient follow-up.
Methods: An observational study was conducted on two cohorts of PTC patients and healthy controls (HCs) using digital PCR. We collected patients' clinical, biochemical, and imaging data during the post-surgery surveillance. We analyzed the levels of circulating miRNAs in serum samples of patients before surgery and during the follow-up, including those with indeterminate/biochemical incomplete response (IndR/BIR) and residual thyroid tissues (Thy Residue).
Results: Both miR-146a-5p and miR-221-3p were confirmed as effective biomarkers for PTC diagnosis. They enabled differentiation between pre-surgery PTC patients and HCs with an area under the curve (AUC) of 92% and 87.3%, respectively, using a threshold level of 768,545 copies/uL for miR-146a-5p and 389,331 copies/uL for miR-221-3p. It was found that miRNA fold change levels, rather than absolute levels, can be useful during patient follow-up. In particular, we found that a fold change of 2 for miR-146a-5p and 2.2 for miR-221-3p can identify a progressive disease, regardless of the presence of TgAbs or remnant thyroid.
Conclusion: MiRNA-146a-5p and miRNA-221-3p, particularly the former, could be valuable diagnostic biomarkers for PTCs. They also seem to be effective in monitoring disease progression during patient follow-up by evaluating their fold change, even when thyroglobulin is uninformative.
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| http://dx.doi.org/10.1007/s40618-024-02467-3 | DOI Listing |
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