In the Cancer Genome Atlas Lung Adenocarcinoma (TCGA LUAD) dataset (Hoadley et al. 2018), we found that, within KRAS-mutant tumors, those with STK11 mutations had higher PER1 mRNA expression (p = 0.0224) than those with wildtype LKB1 (Fig. 1G). Here, PER1 is linked to lung adenocarcinoma.