Fu et al. (33) pointed out that lnc-ROR functions as an endogenous microRNA sponge in pancreatic cancer cells, which regulates the expression of let-7 family gene, including let-7c-3p, let-7f-1-3p, let-7a-3p, let-7i-5p, and let-7f-3-3p. The gene discussed is LINC-ROR; the disease is familial pancreatic carcinoma.