While no LKB1 mutations were reported in 11 SCLC cell lines (34, 35), a previous paper by Amin and colleagues reported a lower (13.3%) LKB1 IHC expression in 30 SCLC patients, of which 27 received surgery, but LKB1 expression was studied with a different antibody (D-19) and different scoring system (36). Here, STK11 is linked to small cell lung carcinoma.