Wnt Family Member 9b (Wnt9b) Is a New Sensitive and Specific Marker for Breast Cancer.
Am J Surg Pathol
; 45(12): 1633-1640, 2021 12 01.
Article
em En
| MEDLINE
| ID: mdl-34324458
ABSTRACT
Confirming the tumor origin is often a diagnostic challenge in pathology and carries significant therapeutic impacts. Cytokeratin 7, estrogen receptor, and GATA binding protein 3 (GATA3) are well-established diagnostic markers frequently used to support a tumor's breast origin. However, their specificities still have room to improve. Many nonbreast tumors express cytokeratin 7 and estrogen receptor, and urothelial tumors frequently express GATA3. There is a practical need for a new breast lineage marker that is sensitive and specific. Wnt family member proteins play critical roles in embryo development, tissue homeostasis and tumor development through ß-catenin dependent and independent pathways. The current study evaluated Wnt9b and GATA3 expression in 163 primary breast cancers, 63 metastatic breast cancers, and 525 nonbreast epithelial tumors. The positive rates of Wnt9b and GATA3 in primary breast cancer were both 98.7%. The positive rates in metastatic breast cancer were 87.3% for Wnt9b and 96.8% for GATA3. For nonbreast tumors, including 64 cases of urothelial carcinoma, Wnt9b was negative in all except salivary gland carcinomas. The study demonstrated that Wnt9b is a breast cancer marker with similar sensitivity as GATA3 but with greater specificity than GATA3 and may ultimately become a useful diagnostic tool in routine surgical pathology practice.
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Neoplasias da Mama
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Imuno-Histoquímica
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Carcinoma
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Biomarcadores Tumorais
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Proteínas Wnt
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Fator de Transcrição GATA3
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article