For example, studies have documented high CD47 expression in esophageal cancer [7], gastric cancer [5, 8], colorectal cancer [9], hepatocellular carcinoma [10], lung cancer [4, 6, 11], breast cancer [12], endometrial cancer [13, 14], kidney cancer [15], and nasopharyngeal cancer [16]. Here, CD47 is linked to endometrial cancer.