In the TCGA datasets, it was found that in Cholangiocarcinoma (CHOL), liver hepatocellular carcinoma (LIHC), lung squamous cell carcinoma (LUSC), kidney chromophobe (KICH) and stomach adenocarcinoma (STAD), the expression of DLD was higher compared with that in the corresponding control tissues. Here, DLD is linked to squamous cell lung carcinoma.