Profile of anterior gradient 3 (AGR3) mRNA expression and serum levels in benign and malignant breast tumors

Abstract

BACKGROUND: Benign and malignant breast tumors are the most commonly diagnosed tumor in females. Early and accurate diagnosis of malignancy is essential for effective breast cancer treatment. Human anterior gradient 3 (AGR3) has been suggested as a potential biomarker for the early detection and prognostic determination of breast cancer. OBJECTIVE: This study profiles AGR3 mRNA expression and serum protein levels in patients with benign and malignant breast tumors. METHODS: A case-control study was conducted on 40 benign and 40 malignant breast tumor patients in Makassar, Indonesia. AGR3 mRNA and protein were detected using qRT-PCR and ELISA, respectively. RESULTS: This study found significantly higher AGR3 mRNA expression in benign than malignant breast tumors using qRT-PCR (p < 0.001). In contrast, ELISA revealed no significant difference between AGR3 serum protein levels in benign and malignant breast tumors (p = 0.507). CONCLUSIONS: AGR3 is associated with non-aggressive tumors and could be used as a marker for less aggressive breast tumors.