NRP1 and cholangiocarcinoma: In the last few months alone, expression of NRP1 has been reported in a variety of cancers, including oral squamous cell carcinoma [65], gastric cancer [66], pancreatic duct adenocarcinoma (PDAC) [67,68], hepatocellular carcinoma [69], cholangiocarcinoma [70,71], colorectal carcinoma [72], prostate cancer [73], and breast cancer [74].