CD276 and lung adenocarcinoma: Low and heterogeneous expressions of B7-H3 were detected in stomach adenocarcinoma (STAD), pancreatic adenocarcinoma (PAAD), kidney renal clear cell carcinoma (KIRC), and lung adenocarcinoma (LUAD), and median expression levels were observed in the remaining four types of cancer (cutaneous squamous cell carcinoma (CSCC), rectum adenocarcinoma (READ), ductal carcinoma in situ (DCIS), and hepatocellular carcinoma (HCC)).