STK11 and non-small cell lung carcinoma: data that dexamethasone mediated cell cycle arrest during in vitro experiments may compromise the ability of some chemotherapy agents to be effective, they do not highlight reduced efficacy for any platinum agents, and we point out the very high level of efficacy of dexamethasone alone in their NCI-H1944 xenograft model (Figure 2F of their paper) which is a LKB1 mutant NSCLC.