The expression of versican and its role in pancreatic neuroendocrine tumors.

Authors

null

Zhao Sun

Peking Union Medical College Hospital, Beijing, China

Zhao Sun , Heli Gao , Junjie Gu , Yuejuan Cheng , Yuanjia Chen , Chunmei Bai

Organizations

Peking Union Medical College Hospital, Beijing, China, Peking Union Medical College Hospital/ Chinese Academy of Medical Sciences, Beijing, China

Research Funding

Other

Background: Pancreatic neuroendocrine tumor (pNET) is a group of rare and heterogeneous tumor. Prognostic biomarkers are essential to better predict patients’ prognosis and approve individualized chemotherapy. According to references, Versican(VCAN) expression plays an important role in the development of various tumors.Our previous study found VCAN had a tumor-specific expression in pNET tissues. Therefore, further study is performed to investigate the relationship between VCAN expression in pNET tissues and patients’ prognosis. Methods: Clinicopathological data of pNET patients who underwent surgery between 2005 and 2010 were collected, followed up and evaluated. VCAN expression was assessed by immunohistochemical (IHC) staining. The relationship between VCAN expression and clinicopathological characteristics of patients were analyzed by Chi square. The expression between VCAN expression and disease-free survival (DFS) of patients were analyzed by Kaplan-Meier. The relationship between patients’ DFS and relative clinicopathological characters were analyzed by Cox regression. Results: 174 pNET patients were enrolled in our research. Among them, 124 patients were VCAN positive and 50 were VCAN negative. VCAN expression was significantly associated with tumor stage. Better disease-free survival (DFS) was observed in patients with VCAN positive compared to those with VCAN negative (124.1±75.71m,99.35±12.14,respectively, p = 0.003).Multivariate analysis demonstrated that VCAN expression, Grade, tumor size were independent prognostic predictor for patients’ prognosis(p = 0.01,0.000,0.001,respectively). Subgroup analysis revealed that VCAN positive predicted a better DFS in patients with Grade 2, Tumor size > 2cm, and Non-functional tumor(p = 0.04,0.002,0.01,respectively). Conclusions: pNET patients with VCAN positive had a longer DFS.

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Abstract Details

Meeting

2018 Gastrointestinal Cancers Symposium

Session Type

Poster Session

Session Title

Poster Session B: Cancers of the Pancreas, Small Bowel, and Hepatobiliary Tract

Track

Cancers of the Pancreas, Small Bowel, and Hepatobiliary Tract

Sub Track

Prevention, Diagnosis, and Screening

Citation

J Clin Oncol 36, 2018 (suppl 4S; abstr 254)

DOI

10.1200/JCO.2018.36.4_suppl.254

Abstract #

254

Poster Bd #

C7

Abstract Disclosures

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