As shown in Figure 1A, the PDHA1 expression in seven tumor tissues, namely, cervical squamous cell carcinoma and endocervical adenocarcinoma (CESC), cholangiocarcinoma (CHOL), liver hepatocellular carcinoma (LIHC), lung adenocarcinoma (LUAD), lung squamous cell carcinoma (LUSC), stomach adenocarcinoma (STAD), and uterine corpus endometrial carcinoma (UCEC), was significantly upregulated. Here, PDHA1 is linked to lung adenocarcinoma.