Tumor Biology

, Volume 36, Issue 12, pp 9961–9968 | Cite as

The clinical significance of FRAT1 and ABCG2 expression in pancreatic ductal adenocarcinoma

  • Yuan Yuan
  • Zhulin Yang
  • Xiongying Miao
  • Daiqiang Li
  • Ziru Liu
  • Qiong Zou
Research Article


Pancreatic ductal adenocarcinoma (PDAC) is a highly malignant tumor with intrinsic resistance to cytotoxic agents. The molecular mechanisms associated with high malignancy and resistance to chemotherapy and radiotherapy have not been fully elucidated. This study investigated the clinicopathological significances of frequently rearranged in advanced T-cell lymphomas-1 (FRAT1) and ATP-binding cassette subfamily G member 2 (ABCG2) expression in PDAC. FRAT1 and ABCG2 protein expression in 106 PDAC, 35 peritumoral tissues, 55 benign pancreatic tissues, and 13 normal pancreatic tissues was measured by immunohistochemistry. FRAT1 and ABCG2 protein was overexpressed in PDAC tumors compared to peritumoral tissues, benign pancreatic tissues, and normal pancreatic tissues (P < 0.01). The percentage of cases with positive FRAT1 and ABCG2 overexpression was significantly higher in PDAC patients with poor differentiation, lymph node metastasis, invasion, and TNM stage III/IV disease than in patients with well-differentiated tumor, no lymph node metastasis and invasion, and TNM stage I/II disease (P < 0.05 or P < 0.01). In pancreatic tissues with benign lesions, tissues with positive FRAT1 and ABCG2 protein expression exhibited dysplasia or intraepithelial neoplasia. Kaplan-Meier survival analysis showed that PDAC patients with positive FRAT1 and ABCG2 expression survived significantly shorter than patients with negative FRAT1 and ABCG2 expression (P < 0.05 or P < 0.001). Cox multivariate analysis revealed that positive FRAT1 and ABCG2 expression was an independent poor prognosis factor in PDAC patients. FRAT1 and ABCG2 overexpression is associated with carcinogenesis, progression, and poor prognosis in patients with PDAC.


Pancreatic ductal adenocarcinoma Dysplasia Pancreatic intraepithelial neoplasia FRAT1 ABCG2 Immunohistochemistry 


Conflict of interest



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Copyright information

© International Society of Oncology and BioMarkers (ISOBM) 2015

Authors and Affiliations

  • Yuan Yuan
    • 1
  • Zhulin Yang
    • 2
  • Xiongying Miao
    • 2
  • Daiqiang Li
    • 3
  • Ziru Liu
    • 2
  • Qiong Zou
    • 1
  1. 1.Department of Pathology, Third Xiangya HospitalCentral South UniversityChangshaPeople’s Republic of China
  2. 2.Research Laboratory of Hepatobiliary Diseases, Second Xiangya HospitalCentral South UniversityChangshaPeople’s Republic of China
  3. 3.Department of Pathology, Second Xiangya HospitalCentral South UniversityChangshaPeople’s Republic of China

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