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Muc-1 expression may help characterize thyroid nodules but does not predict patients' outcome
Elaine Cristina Morari1, Joyce Rosário Silva, Ana Carolina Trindade Guilhen
1Laboratory of Cancer Molecular Genetics, Faculty of Medical Sciences (FCM), University of Campinas (UNICAMP), Rua Tessalia Vieira de Camargo 126, Barão Geraldo St, Campinas, SP 13083-887, Brazil.
Endocrine Pathology
|November 9, 2010
Summary
Mucin 1 (MUC1) protein and mRNA expression can help distinguish benign from malignant thyroid nodules. However, MUC1 levels did not predict thyroid cancer aggressiveness or patient outcomes.
Area of Science:
- Oncology
- Biomarkers
- Thyroid Cancer Research
Background:
- Mucin 1 (MUC1) is a transmembrane protein implicated in various cancers.
- Its role in thyroid cancer diagnosis and prognosis requires further investigation.
Purpose of the Study:
- To evaluate the clinical utility of MUC1 in diagnosing and predicting the prognosis of thyroid cancer.
- To assess MUC1 protein and mRNA expression in different thyroid lesions.
Main Methods:
- Protein expression of MUC1 was analyzed via immunohistochemistry (IHC) in 289 thyroid carcinomas and 121 noncancerous nodules.
- MUC1 mRNA levels were quantified using quantitative real-time PCR (q-PCR) in 108 carcinomas and benign thyroid tissues.
- Patients were categorized based on disease-free status or adverse outcomes.
Main Results:
- MUC1 protein was detected in a significant proportion of papillary thyroid carcinomas (PTC) and follicular carcinomas (FC).
- MUC1 expression differentiated benign from malignant thyroid tissues (sensitivity 89%, specificity 53%) and follicular carcinoma from follicular adenoma.
- MUC1 mRNA expression also distinguished malignant from benign nodules (p < 0.0001).
- Neither protein nor mRNA MUC1 expression correlated with clinical or pathological features of aggressiveness or patient outcome.
Conclusions:
- MUC1 expression may aid in differentiating follicular-patterned thyroid lesions.
- MUC1 is a potential biomarker for distinguishing malignant from benign thyroid nodules.
- MUC1 is not a reliable prognostic marker for thyroid cancer aggressiveness or patient outcomes.