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Published on: June 9, 2023
Three-gene molecular diagnostic model for thyroid cancer.
Nijaguna B Prasad1, Jeanne Kowalski, Hua-Ling Tsai
1Endocrine Surgery Section, Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, USA. nprasad1@jhmi.edu
Thyroid : Official Journal of the American Thyroid Association
|January 28, 2012
Summary
A new three-gene molecular model can help distinguish benign from malignant thyroid nodules when initial fine needle aspiration (FNA) cytology is indeterminate. This approach shows promise for improving clinical management of suspicious thyroid nodules.
Area of Science:
- Endocrinology and Oncology
- Molecular Diagnostics
- Thyroid Cancer Research
Background:
- Fine needle aspiration (FNA) cytology is standard for preoperative diagnosis of thyroid nodules.
- Up to 25% of FNA results are indeterminate, complicating clinical management decisions.
- Molecular markers may improve the diagnostic accuracy of indeterminate thyroid FNA cytology.
Purpose of the Study:
- To validate the utility of a previously identified set of molecular markers.
- To assess the effectiveness of a three-gene model (HMGA2, MRC2, SFN) as an adjunct to FNA cytology for indeterminate thyroid nodules.
Main Methods:
- Validated 14 molecular markers using immunohistochemistry (IHC) on 154 thyroid tumors.
- Analyzed 95 FNA samples using quantitative real-time RT-PCR (QRT-PCR).
- Included 44 tumors (29%) with suspicious or indeterminate FNA cytology in the IHC analysis.
Main Results:
- A three-gene model achieved high diagnostic accuracy: AUCs of ≥0.95 (80% sensitivity, 100% specificity) for IHC data.
- The same model showed AUCs of ≥0.84 (71% sensitivity, 84% specificity) for QRT-PCR data from FNA samples.
- These results demonstrate the model's effectiveness in distinguishing benign from malignant nodules.
Conclusions:
- A three-gene molecular model is a feasible and promising tool for diagnosing indeterminate thyroid nodules.
- Implementing this model alongside cytology could significantly improve patient management for suspicious thyroid FNA results.
