STK11/LKB1 is a tumor suppressor that regulates the mTOR pathway and is associated with Peutz-Jeghers syndrome in humans, where gastric polyps and increased cancer risk are observed (Altamish et al., 2020; Li R. et al., 2018; Resta et al., 2013). Here, STK11 is linked to Peutz-Jeghers syndrome.