POMC and pancreatic ductal adenocarcinoma: Proof‐of‐concept analyses illustrate how SiCmiR can uncover candidate hub‐miRNAs in bulk-seq cell lines and hepatocellular carcinoma, scRNA-seq pancreatic ductal carcinoma, and ACTH‐secreting pituitary adenoma and extracellular vesicle (EV)‐mediated crosstalk in glioblastoma.