Li et al. (2017) reported HERV-K (HML-2) env, gag, and np9 genes as well as HERV-K (HML-2) Env protein expression to be significantly increased in pancreatic cancer cell lines as well as patients with pancreatic cancer compared to healthy controls (Figure 7) [322]. Here, ERVW-1 is linked to familial pancreatic carcinoma.