Hepatitis A virus cellular receptor (HAVCR1) is a type-1 integral
membrane glycoprotein that plays a key role in immunity and renal regeneration and is abnormally expressed in various
tumor types. Nonetheless, the function of HAVCR1 in pan-
cancer remains unknown. In this study, we comprehensively analyzed the expression and promoter methylation level of HAVCR1 and assessed the immune cell infiltration, correlation between stromal and immune cell admixture, CD (Cluster of Differentiation) and HAVCR1 expression and prognostic value of HAVCR1
mRNA expression in Liver
hepatocellular carcinoma (LIHC) and Pancreatic
adenocarcinoma (PAAD). Our results showed that HAVCR1 was overexpressed while the promoter methylation of HAVCR1 was decreased in Liver
hepatocellular carcinoma and Pancreatic
adenocarcinoma. HAVCR1 was associated with increased infiltration of B cells, CD8 cells, macrophages, neutrophils and Dendritic cells in Liver
hepatocellular carcinoma and Pancreatic
adenocarcinoma. HAVCR1 expression was positively correlated with the immune, stromal and estimate scores of Pancreatic
adenocarcinoma and the stromal and estimate scores of Liver
hepatocellular carcinoma. Furthermore, HAVCR1 expression was correlated with other immune molecules such as HHLA2 (Human endogenous retrovirus-H long terminal repeat-associating
protein 2), CD44 and TNFRSF4 (
TNF Receptor Superfamily Member 4) in Liver
hepatocellular carcinoma and Pancreatic
adenocarcinoma. During Kaplan-Meier analysis, high HAVCR1 expression in Liver
hepatocellular carcinoma and Pancreatic
adenocarcinoma correlated with poor survival. A marginally significant p-value (p = 0.051) was obtained when the relationship between HAVCR1 expression in Liver
hepatocellular carcinoma and prognosis was analyzed, attributed to the small sample size. Overall, we provided compelling evidence that HAVCR1 could be a prognostic and diagnostic marker for Liver
hepatocellular carcinoma and Pancreatic
adenocarcinoma.