NPM1 is a prognostic biomarker and correlated with clinicopathological characteristics in gastric cancer

Abstract

Background and aims: NPM1 plays an important role in the occurrence and development of leukemia, and its role in some solid tumors has gradually received attention. The purpose of this study is to explore the expression of NPM1 in gastric cancer (GC) tissues, to study the relationship between NPM1 expression and clinicopathological characteristics of GC patients, and to study the influence of NPM1 expression levels on the prognosis of GC patients. Methods: The study was conducted from tissue samples obtained after radical gastrectomy in 106 patients with GC. We used tissue microarray immunohistochemical analysis to examine the expression level of NPM1 in different GC and adjacent tissues, and finally analyzed the relationship between NPM1 expression, clinicopathological factors and survival rate. Results: Compared with the corresponding adjacent tissues, NPM1 is low-expressed in 75.5% of GC tissues. High NPM1 expression group was associated with better overall survival rate and disease free survival rate compared to low NPM1 expression group with GC (p<0.01). Conclusion：The assessment of NPM1 expression in GC samples may represent a useful tool for GC diagnosis and prognostic prediction. Nonetheless, our study should be regarded as a preliminary study, and its predictive value as a single-center retrospective study is limited.