TROAP and hepatocellular carcinoma: However, the involvement of TROAP in liver cancer is controversial: Jiao Y estimated the overall survival (OS) of liver cancer patients based on an analysis of The Cancer Genome Atlas Liver Hepatocellular Carcinoma (TCGA-LIHC) data and evaluated the relationship between TROAP expression in hepatocellular carcinoma (HCC) tissue and clinicopathologic parameters.